\f
/* Nonzero if we have seen an invalid cross reference
to a struct, union, or enum, but not yet printed the message. */
-
tree pending_invalid_xref;
+
/* File and line to appear in the eventual error message. */
location_t pending_invalid_xref_location;
+/* True means we've initialized exception handling. */
+bool c_eh_initialized_p;
+
/* While defining an enum type, this is 1 plus the last enumerator
constant value. Note that will do not have to save this or `enum_overflow'
around nested function definition since such a definition could only
static int enum_overflow;
-/* These #defines are for clarity in working with the information block
- returned by get_parm_info. */
-#define ARG_INFO_PARMS(args) TREE_PURPOSE(args)
-#define ARG_INFO_TAGS(args) TREE_VALUE(args)
-#define ARG_INFO_TYPES(args) TREE_CHAIN(args)
-#define ARG_INFO_OTHERS(args) TREE_TYPE(args)
-
/* The file and line that the prototype came from if this is an
old-style definition; used for diagnostics in
store_parm_decls_oldstyle. */
static location_t current_function_prototype_locus;
-/* The current statement tree. */
+/* The argument information structure for the function currently being
+ defined. */
-static GTY(()) struct stmt_tree_s c_stmt_tree;
+static struct c_arg_info *current_function_arg_info;
-/* The current scope statement stack. */
+/* The obstack on which parser and related data structures, which are
+ not live beyond their top-level declaration or definition, are
+ allocated. */
+struct obstack parser_obstack;
+
+/* The current statement tree. */
-static GTY(()) tree c_scope_stmt_stack;
+static GTY(()) struct stmt_tree_s c_stmt_tree;
/* State saving variables. */
-int c_in_iteration_stmt;
-int c_in_case_stmt;
+tree c_break_label;
+tree c_cont_label;
/* Linked list of TRANSLATION_UNIT_DECLS for the translation units
included in this invocation. Note that the current translation
chained together by the ->prev field, which (as the name implies)
runs in reverse order. All the decls in a given namespace bound to
a given identifier are chained by the ->shadowed field, which runs
- from inner to outer scopes. Finally, the ->contour field points
- back to the relevant scope structure; this is mainly used to make
- decls in the externals scope invisible (see below).
+ from inner to outer scopes.
The ->decl field usually points to a DECL node, but there are two
exceptions. In the namespace of type tags, the bound entity is a
RECORD_TYPE, UNION_TYPE, or ENUMERAL_TYPE node. If an undeclared
identifier is encountered, it is bound to error_mark_node to
suppress further errors about that identifier in the current
- function. */
+ function.
+
+ The ->type field stores the type of the declaration in this scope;
+ if NULL, the type is the type of the ->decl field. This is only of
+ relevance for objects with external or internal linkage which may
+ be redeclared in inner scopes, forming composite types that only
+ persist for the duration of those scopes. In the external scope,
+ this stores the composite of all the types declared for this
+ object, visible or not. The ->inner_comp field (used only at file
+ scope) stores whether an incomplete array type at file scope was
+ completed at an inner scope to an array size other than 1.
+
+ The depth field is copied from the scope structure that holds this
+ decl. It is used to preserve the proper ordering of the ->shadowed
+ field (see bind()) and also for a handful of special-case checks.
+ Finally, the invisible bit is true for a decl which should be
+ ignored for purposes of normal name lookup, and the nested bit is
+ true for a decl that's been bound a second time in an inner scope;
+ in all such cases, the binding in the outer scope will have its
+ invisible bit true. */
struct c_binding GTY((chain_next ("%h.prev")))
{
tree decl; /* the decl bound */
+ tree type; /* the type in this scope */
tree id; /* the identifier it's bound to */
struct c_binding *prev; /* the previous decl in this scope */
struct c_binding *shadowed; /* the innermost decl shadowed by this one */
- struct c_scope *contour; /* the scope in which this decl is bound */
+ unsigned int depth : 28; /* depth of this scope */
+ BOOL_BITFIELD invisible : 1; /* normal lookup should ignore this binding */
+ BOOL_BITFIELD nested : 1; /* do not set DECL_CONTEXT when popping */
+ BOOL_BITFIELD inner_comp : 1; /* incomplete array completed in inner scope */
+ /* one free bit */
};
+#define B_IN_SCOPE(b1, b2) ((b1)->depth == (b2)->depth)
+#define B_IN_CURRENT_SCOPE(b) ((b)->depth == current_scope->depth)
+#define B_IN_FILE_SCOPE(b) ((b)->depth == 1 /*file_scope->depth*/)
+#define B_IN_EXTERNAL_SCOPE(b) ((b)->depth == 0 /*external_scope->depth*/)
#define I_SYMBOL_BINDING(node) \
- (((struct lang_identifier *)IDENTIFIER_NODE_CHECK(node))->symbol_binding)
+ (((struct lang_identifier *) IDENTIFIER_NODE_CHECK(node))->symbol_binding)
#define I_SYMBOL_DECL(node) \
(I_SYMBOL_BINDING(node) ? I_SYMBOL_BINDING(node)->decl : 0)
#define I_TAG_BINDING(node) \
- (((struct lang_identifier *)IDENTIFIER_NODE_CHECK(node))->tag_binding)
+ (((struct lang_identifier *) IDENTIFIER_NODE_CHECK(node))->tag_binding)
#define I_TAG_DECL(node) \
(I_TAG_BINDING(node) ? I_TAG_BINDING(node)->decl : 0)
#define I_LABEL_BINDING(node) \
- (((struct lang_identifier *)IDENTIFIER_NODE_CHECK(node))->label_binding)
+ (((struct lang_identifier *) IDENTIFIER_NODE_CHECK(node))->label_binding)
#define I_LABEL_DECL(node) \
(I_LABEL_BINDING(node) ? I_LABEL_BINDING(node)->decl : 0)
union lang_tree_node
GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"),
- chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *)TYPE_NEXT_VARIANT (&%h.generic) : (union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
+ chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *) TYPE_NEXT_VARIANT (&%h.generic) : (union lang_tree_node *) TREE_CHAIN (&%h.generic)")))
{
union tree_node GTY ((tag ("0"),
desc ("tree_node_structure (&%h)")))
/* Functions called automatically at the beginning and end of execution. */
-tree static_ctors, static_dtors;
+static GTY(()) tree static_ctors;
+static GTY(()) tree static_dtors;
/* Forward declarations. */
static tree lookup_name_in_scope (tree, struct c_scope *);
static tree c_make_fname_decl (tree, int);
-static tree grokdeclarator (tree, tree, enum decl_context, int, tree *);
-static tree grokparms (tree, int);
+static tree grokdeclarator (const struct c_declarator *,
+ struct c_declspecs *,
+ enum decl_context, bool, tree *);
+static tree grokparms (struct c_arg_info *, bool);
static void layout_array_type (tree);
\f
/* States indicating how grokdeclarator() should handle declspecs marked
which may be any of several kinds of DECL or TYPE or error_mark_node,
in the scope SCOPE. */
static void
-bind (tree name, tree decl, struct c_scope *scope)
+bind (tree name, tree decl, struct c_scope *scope, bool invisible, bool nested)
{
struct c_binding *b, **here;
binding_freelist = b->prev;
}
else
- b = ggc_alloc (sizeof (struct c_binding));
+ b = GGC_NEW (struct c_binding);
b->shadowed = 0;
b->decl = decl;
b->id = name;
- b->contour = scope;
+ b->depth = scope->depth;
+ b->invisible = invisible;
+ b->nested = nested;
+ b->inner_comp = 0;
+
+ b->type = 0;
b->prev = scope->bindings;
scope->bindings = b;
case ERROR_MARK: here = &I_SYMBOL_BINDING (name); break;
default:
- abort ();
+ gcc_unreachable ();
}
/* Locate the appropriate place in the chain of shadowed decls
to insert this binding. Normally, scope == current_scope and
this does nothing. */
- while (*here && (*here)->contour->depth > scope->depth)
+ while (*here && (*here)->depth > scope->depth)
here = &(*here)->shadowed;
b->shadowed = *here;
{
struct c_binding *prev = b->prev;
- b->id = 0;
- b->decl = 0;
- b->contour = 0;
- b->shadowed = 0;
+ memset (b, 0, sizeof (struct c_binding));
b->prev = binding_freelist;
binding_freelist = b;
tree type = TREE_TYPE (decl);
if (type != error_mark_node
&& TREE_CODE (type) == ARRAY_TYPE
- && ! DECL_EXTERNAL (decl)
+ && !DECL_EXTERNAL (decl)
&& TYPE_DOMAIN (type) == 0)
{
- warning ("%Jarray '%D' assumed to have one element", decl, decl);
+ warning ("%Jarray %qD assumed to have one element", decl, decl);
complete_array_type (type, NULL_TREE, 1);
/* The Objective-C front-end often needs to determine the current scope. */
void *
-get_current_scope (void)
+objc_get_current_scope (void)
{
return current_scope;
}
scope_freelist = scope->outer;
}
else
- scope = ggc_alloc_cleared (sizeof (struct c_scope));
+ scope = GGC_CNEW (struct c_scope);
scope->keep = keep_next_level_flag;
scope->outer = current_scope;
scope->depth--;
sorry ("GCC supports only %u nested scopes\n", scope->depth);
}
-
+
current_scope = scope;
keep_next_level_flag = false;
}
}
+/* Set the TYPE_CONTEXT of all of TYPE's variants to CONTEXT. */
+
+static void
+set_type_context (tree type, tree context)
+{
+ for (type = TYPE_MAIN_VARIANT (type); type;
+ type = TYPE_NEXT_VARIANT (type))
+ TYPE_CONTEXT (type) = context;
+}
+
/* Exit a scope. Restore the state of the identifier-decl mappings
that were in effect when this scope was entered. Return a BLOCK
node containing all the DECLs in this scope that are of interest
/* Warnings for unused labels, errors for undefined labels. */
if (TREE_USED (p) && !DECL_INITIAL (p))
{
- error ("%Jlabel `%D' used but not defined", p, p);
+ error ("%Jlabel %qD used but not defined", p, p);
DECL_INITIAL (p) = error_mark_node;
}
else if (!TREE_USED (p) && warn_unused_label)
{
if (DECL_INITIAL (p))
- warning ("%Jlabel `%D' defined but not used", p, p);
+ warning ("%Jlabel %qD defined but not used", p, p);
else
- warning ("%Jlabel `%D' declared but not defined", p, p);
+ warning ("%Jlabel %qD declared but not defined", p, p);
}
/* Labels go in BLOCK_VARS. */
TREE_CHAIN (p) = BLOCK_VARS (block);
BLOCK_VARS (block) = p;
-
-#ifdef ENABLE_CHECKING
- if (I_LABEL_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_LABEL_BINDING (b->id) == b);
I_LABEL_BINDING (b->id) = b->shadowed;
break;
case ENUMERAL_TYPE:
case UNION_TYPE:
case RECORD_TYPE:
- TYPE_CONTEXT (p) = context;
+ set_type_context (p, context);
/* Types may not have tag-names, in which case the type
appears in the bindings list with b->id NULL. */
if (b->id)
{
-#ifdef ENABLE_CHECKING
- if (I_TAG_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_TAG_BINDING (b->id) == b);
I_TAG_BINDING (b->id) = b->shadowed;
}
break;
case FUNCTION_DECL:
/* Propagate TREE_ADDRESSABLE from nested functions to their
containing functions. */
- if (! TREE_ASM_WRITTEN (p)
+ if (!TREE_ASM_WRITTEN (p)
&& DECL_INITIAL (p) != 0
&& TREE_ADDRESSABLE (p)
&& DECL_ABSTRACT_ORIGIN (p) != 0
goto common_symbol;
case VAR_DECL:
- /* Warnings for unused variables. Keep this in sync with
- stmt.c:warn_about_unused_variables, which we cannot use
- since it expects a different data structure. */
+ /* Warnings for unused variables. */
if (warn_unused_variable
&& !TREE_USED (p)
&& !DECL_IN_SYSTEM_HEADER (p)
&& DECL_NAME (p)
&& !DECL_ARTIFICIAL (p)
- && (scope != file_scope
- || (TREE_STATIC (p) && !TREE_PUBLIC (p)
- && !TREE_THIS_VOLATILE (p)))
- && scope != external_scope)
- warning ("%Junused variable `%D'", p, p);
+ && scope != file_scope
+ && scope != external_scope)
+ warning ("%Junused variable %qD", p, p);
+
+ if (b->inner_comp)
+ {
+ error ("%Jtype of array %qD completed incompatibly with"
+ " implicit initialization", p, p);
+ }
/* Fall through. */
case TYPE_DECL:
common_symbol:
/* All of these go in BLOCK_VARS, but only if this is the
binding in the home scope. */
- if (!C_DECL_IN_EXTERNAL_SCOPE (p) || scope == external_scope)
+ if (!b->nested)
{
TREE_CHAIN (p) = BLOCK_VARS (block);
BLOCK_VARS (block) = p;
}
- /* If this is the file scope, must set DECL_CONTEXT on these. */
- if (!C_DECL_IN_EXTERNAL_SCOPE (p) && scope == file_scope)
- DECL_CONTEXT (p) = context;
+ /* If this is the file scope, and we are processing more
+ than one translation unit in this compilation, set
+ DECL_CONTEXT of each decl to the TRANSLATION_UNIT_DECL.
+ This makes same_translation_unit_p work, and causes
+ static declarations to be given disambiguating suffixes. */
+ if (scope == file_scope && num_in_fnames > 1)
+ {
+ DECL_CONTEXT (p) = context;
+ if (TREE_CODE (p) == TYPE_DECL)
+ set_type_context (TREE_TYPE (p), context);
+ }
/* Fall through. */
/* Parameters go in DECL_ARGUMENTS, not BLOCK_VARS, and have
here with b->id NULL in this case. */
if (b->id)
{
-#ifdef ENABLE_CHECKING
- if (I_SYMBOL_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_SYMBOL_BINDING (b->id) == b);
I_SYMBOL_BINDING (b->id) = b->shadowed;
+ if (b->shadowed && b->shadowed->type)
+ TREE_TYPE (b->shadowed->decl) = b->shadowed->type;
}
break;
default:
- abort ();
+ gcc_unreachable ();
}
}
-
+
/* Dispose of the block that we just made inside some higher level. */
if ((scope->function_body || scope == file_scope) && context)
{
{
tree decl;
+ if (file_scope)
+ return;
+
push_scope ();
file_scope = current_scope;
start_fname_decls ();
for (decl = visible_builtins; decl; decl = TREE_CHAIN (decl))
- bind (DECL_NAME (decl), decl, file_scope);
+ bind (DECL_NAME (decl), decl, file_scope,
+ /*invisible=*/false, /*nested=*/true);
}
void
still works without it. */
finish_fname_decls ();
- /* Kludge: don't actually pop the file scope if generating a
- precompiled header, so that macros and local symbols are still
- visible to the PCH generator. */
+ /* This is the point to write out a PCH if we're doing that.
+ In that case we do not want to do anything else. */
if (pch_file)
- return;
+ {
+ c_common_write_pch ();
+ return;
+ }
- /* And pop off the file scope. */
+ /* Pop off the file scope and close this translation unit. */
pop_scope ();
file_scope = 0;
-
- cpp_undef_all (parse_in);
+ cgraph_finalize_compilation_unit ();
}
/* Insert BLOCK at the end of the list of subblocks of the current
/* Record the identifier as the type's name if it has none. */
if (name && !TYPE_NAME (type))
TYPE_NAME (type) = name;
- bind (name, type, current_scope);
+ bind (name, type, current_scope, /*invisible=*/false, /*nested=*/false);
/* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE will be the
tagged type we just added to the current scope. This fake
while (oldargs || newargs)
{
- if (! oldargs
- || ! newargs
- || ! TREE_VALUE (oldargs)
- || ! TREE_VALUE (newargs)
+ if (!oldargs
+ || !newargs
+ || !TREE_VALUE (oldargs)
+ || !TREE_VALUE (newargs)
|| TYPE_MODE (TREE_VALUE (oldargs))
!= TYPE_MODE (TREE_VALUE (newargs)))
return 0;
tree t;
if (TREE_CODE (olddecl) != FUNCTION_DECL
- || !comptypes (TREE_TYPE (oldtype), TREE_TYPE (newtype), COMPARE_STRICT)
+ || !comptypes (TREE_TYPE (oldtype), TREE_TYPE (newtype))
|| !((TYPE_ARG_TYPES (oldtype) == 0 && DECL_INITIAL (olddecl) == 0)
||
(TYPE_ARG_TYPES (newtype) == 0 && DECL_INITIAL (newdecl) == 0)))
agree on the number of arguments. */
if (END_OF_ARGLIST (oldargtype))
{
- error ("%Jprototype for '%D' declares more arguments "
+ error ("%Jprototype for %qD declares more arguments "
"than previous old-style definition", newdecl, newdecl);
return false;
}
else if (END_OF_ARGLIST (newargtype))
{
- error ("%Jprototype for '%D' declares fewer arguments "
+ error ("%Jprototype for %qD declares fewer arguments "
"than previous old-style definition", newdecl, newdecl);
return false;
}
/* Type for passing arg must be consistent with that declared
for the arg. */
- else if (! comptypes (oldargtype, newargtype, COMPARE_STRICT))
+ else if (!comptypes (oldargtype, newargtype))
{
- error ("%Jprototype for '%D' declares arg %d with incompatible type",
+ error ("%Jprototype for %qD declares arg %d with incompatible type",
newdecl, newdecl, i);
return false;
}
/* If we get here, no errors were found, but do issue a warning
for this poor-style construct. */
- warning ("%Jprototype for '%D' follows non-prototype definition",
+ warning ("%Jprototype for %qD follows non-prototype definition",
newdecl, newdecl);
return true;
#undef END_OF_ARGLIST
if (TREE_CODE (decl) == FUNCTION_DECL && DECL_BUILT_IN (decl))
;
else if (DECL_INITIAL (decl))
- diag (N_("%Jprevious definition of '%D' was here"), decl, decl);
+ diag (N_("%Jprevious definition of %qD was here"), decl, decl);
else if (C_DECL_IMPLICIT (decl))
- diag (N_("%Jprevious implicit declaration of '%D' was here"), decl, decl);
+ diag (N_("%Jprevious implicit declaration of %qD was here"), decl, decl);
else
- diag (N_("%Jprevious declaration of '%D' was here"), decl, decl);
+ diag (N_("%Jprevious declaration of %qD was here"), decl, decl);
}
/* Subroutine of duplicate_decls. Compare NEWDECL to OLDDECL.
&& DECL_BUILT_IN (olddecl)
&& !C_DECL_DECLARED_BUILTIN (olddecl)))
{
- error ("%J'%D' redeclared as different kind of symbol",
+ error ("%J%qD redeclared as different kind of symbol",
newdecl, newdecl);
locate_old_decl (olddecl, error);
}
else if (TREE_PUBLIC (newdecl))
- warning ("%Jbuilt-in function '%D' declared as non-function",
+ warning ("%Jbuilt-in function %qD declared as non-function",
newdecl, newdecl);
else if (warn_shadow)
- warning ("%Jdeclaration of '%D' shadows a built-in function",
+ warning ("%Jdeclaration of %qD shadows a built-in function",
newdecl, newdecl);
return false;
}
- if (!comptypes (oldtype, newtype, COMPARE_STRICT))
+ /* Enumerators have no linkage, so may only be declared once in a
+ given scope. */
+ if (TREE_CODE (olddecl) == CONST_DECL)
+ {
+ error ("%Jredeclaration of enumerator %qD", newdecl, newdecl);
+ locate_old_decl (olddecl, error);
+ return false;
+ }
+
+ if (!comptypes (oldtype, newtype))
{
if (TREE_CODE (olddecl) == FUNCTION_DECL
&& DECL_BUILT_IN (olddecl) && !C_DECL_DECLARED_BUILTIN (olddecl))
This is for the ffs and fprintf builtins. */
tree trytype = match_builtin_function_types (newtype, oldtype);
- if (trytype && comptypes (newtype, trytype, COMPARE_STRICT))
+ if (trytype && comptypes (newtype, trytype))
*oldtypep = oldtype = trytype;
else
{
/* If types don't match for a built-in, throw away the
built-in. No point in calling locate_old_decl here, it
won't print anything. */
- warning ("%Jconflicting types for built-in function '%D'",
+ warning ("%Jconflicting types for built-in function %qD",
newdecl, newdecl);
return false;
}
}
else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_SOURCE_LINE (olddecl) == 0)
+ && DECL_IS_BUILTIN (olddecl))
{
/* A conflicting function declaration for a predeclared
function that isn't actually built in. Objective C uses
&& TYPE_MAIN_VARIANT (TREE_TYPE (newtype)) == integer_type_node
&& C_FUNCTION_IMPLICIT_INT (newdecl))
{
- pedwarn ("%Jconflicting types for '%D'", newdecl, newdecl);
+ pedwarn ("%Jconflicting types for %qD", newdecl, newdecl);
/* Make sure we keep void as the return type. */
TREE_TYPE (newdecl) = *newtypep = newtype = oldtype;
C_FUNCTION_IMPLICIT_INT (newdecl) = 0;
}
else
{
- error ("%Jconflicting types for '%D'", newdecl, newdecl);
+ if (TYPE_QUALS (newtype) != TYPE_QUALS (oldtype))
+ error ("%J conflicting type qualifiers for %qD", newdecl, newdecl);
+ else
+ error ("%Jconflicting types for %qD", newdecl, newdecl);
diagnose_arglist_conflict (newdecl, olddecl, newtype, oldtype);
locate_old_decl (olddecl, error);
return false;
{
if (DECL_IN_SYSTEM_HEADER (newdecl) || DECL_IN_SYSTEM_HEADER (olddecl))
return true; /* Allow OLDDECL to continue in use. */
-
- error ("%Jredefinition of typedef '%D'", newdecl, newdecl);
+
+ error ("%Jredefinition of typedef %qD", newdecl, newdecl);
locate_old_decl (olddecl, error);
return false;
}
&& !TYPE_ARG_TYPES (TREE_TYPE (newdecl)))))
{
if (warn_shadow)
- warning ("%Jdeclaration of '%D' shadows a built-in function",
+ warning ("%Jdeclaration of %qD shadows a built-in function",
newdecl, newdecl);
/* Discard the old built-in function. */
return false;
}
-
+
if (DECL_INITIAL (newdecl))
{
if (DECL_INITIAL (olddecl)
&& !(DECL_DECLARED_INLINE_P (olddecl)
&& DECL_EXTERNAL (olddecl)
&& !(DECL_DECLARED_INLINE_P (newdecl)
- && DECL_EXTERNAL (newdecl))))
+ && DECL_EXTERNAL (newdecl)
+ && same_translation_unit_p (olddecl, newdecl))))
{
- error ("%Jredefinition of '%D'", newdecl, newdecl);
+ error ("%Jredefinition of %qD", newdecl, newdecl);
locate_old_decl (olddecl, error);
return false;
}
locate_old_decl (olddecl, error);
return false;
}
- /* Mismatched non-static and static is considered poor style.
- We only diagnose static then non-static if -Wtraditional,
- because it is the most convenient way to get some effects
- (see e.g. what unwind-dw2-fde-glibc.c does to the definition
- of _Unwind_Find_FDE in unwind-dw2-fde.c). Revisit? */
+ /* A non-static declaration (even an "extern") followed by a
+ static declaration is undefined behavior per C99 6.2.2p3-5,7.
+ The same is true for a static forward declaration at block
+ scope followed by a non-static declaration/definition at file
+ scope. Static followed by non-static at the same scope is
+ not undefined behavior, and is the most convenient way to get
+ some effects (see e.g. what unwind-dw2-fde-glibc.c does to
+ the definition of _Unwind_Find_FDE in unwind-dw2-fde.c), but
+ we do diagnose it if -Wtraditional. */
if (TREE_PUBLIC (olddecl) && !TREE_PUBLIC (newdecl))
{
- /* A static function declaration for a predeclared function
- that isn't actually built in, silently overrides the
- default. Objective C uses these. See also above.
- FIXME: Make Objective C use normal builtins. */
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_SOURCE_LINE (olddecl) == 0)
- return false;
- else
+ /* Two exceptions to the rule. If olddecl is an extern
+ inline, or a predeclared function that isn't actually
+ built in, newdecl silently overrides olddecl. The latter
+ occur only in Objective C; see also above. (FIXME: Make
+ Objective C use normal builtins.) */
+ if (!DECL_IS_BUILTIN (olddecl)
+ && !(DECL_EXTERNAL (olddecl)
+ && DECL_DECLARED_INLINE_P (olddecl)))
{
- warning ("%Jstatic declaration of '%D' follows "
- "non-static declaration", newdecl, newdecl);
- warned = true;
+ error ("%Jstatic declaration of %qD follows "
+ "non-static declaration", newdecl, newdecl);
+ locate_old_decl (olddecl, error);
}
+ return false;
}
- else if (TREE_PUBLIC (newdecl) && !TREE_PUBLIC (olddecl)
- && warn_traditional)
+ else if (TREE_PUBLIC (newdecl) && !TREE_PUBLIC (olddecl))
{
- warning ("%Jnon-static declaration of '%D' follows "
- "static declaration", newdecl, newdecl);
- warned = true;
+ if (DECL_CONTEXT (olddecl))
+ {
+ error ("%Jnon-static declaration of %qD follows "
+ "static declaration", newdecl, newdecl);
+ locate_old_decl (olddecl, error);
+ return false;
+ }
+ else if (warn_traditional)
+ {
+ warning ("%Jnon-static declaration of %qD follows "
+ "static declaration", newdecl, newdecl);
+ warned = true;
+ }
}
}
else if (TREE_CODE (newdecl) == VAR_DECL)
if (DECL_THREAD_LOCAL (newdecl) != DECL_THREAD_LOCAL (olddecl))
{
if (DECL_THREAD_LOCAL (newdecl))
- error ("%Jthread-local declaration of '%D' follows "
+ error ("%Jthread-local declaration of %qD follows "
"non-thread-local declaration", newdecl, newdecl);
else
- error ("%Jnon-thread-local declaration of '%D' follows "
+ error ("%Jnon-thread-local declaration of %qD follows "
"thread-local declaration", newdecl, newdecl);
locate_old_decl (olddecl, error);
/* Multiple initialized definitions are not allowed (6.9p3,5). */
if (DECL_INITIAL (newdecl) && DECL_INITIAL (olddecl))
{
- error ("%Jredefinition of '%D'", newdecl, newdecl);
+ error ("%Jredefinition of %qD", newdecl, newdecl);
locate_old_decl (olddecl, error);
return false;
}
- /* Objects declared at file scope: if at least one is 'extern',
- it's fine (6.2.2p4); otherwise the linkage must agree (6.2.2p7). */
- if (DECL_FILE_SCOPE_P (newdecl))
+ /* Objects declared at file scope: if the first declaration had
+ external linkage (even if it was an external reference) the
+ second must have external linkage as well, or the behavior is
+ undefined. If the first declaration had internal linkage, then
+ the second must too, or else be an external reference (in which
+ case the composite declaration still has internal linkage).
+ As for function declarations, we warn about the static-then-
+ extern case only for -Wtraditional. See generally 6.2.2p3-5,7. */
+ if (DECL_FILE_SCOPE_P (newdecl)
+ && TREE_PUBLIC (newdecl) != TREE_PUBLIC (olddecl))
{
- if (!DECL_EXTERNAL (newdecl)
- && !DECL_EXTERNAL (olddecl)
- && TREE_PUBLIC (newdecl) != TREE_PUBLIC (olddecl))
+ if (DECL_EXTERNAL (newdecl))
+ {
+ if (!DECL_FILE_SCOPE_P (olddecl))
+ {
+ error ("%Jextern declaration of %qD follows "
+ "declaration with no linkage", newdecl, newdecl);
+ locate_old_decl (olddecl, error);
+ return false;
+ }
+ else if (warn_traditional)
+ {
+ warning ("%Jnon-static declaration of %qD follows "
+ "static declaration", newdecl, newdecl);
+ warned = true;
+ }
+ }
+ else
{
if (TREE_PUBLIC (newdecl))
- error ("%Jnon-static declaration of '%D' follows "
+ error ("%Jnon-static declaration of %qD follows "
"static declaration", newdecl, newdecl);
else
- error ("%Jstatic declaration of '%D' follows "
+ error ("%Jstatic declaration of %qD follows "
"non-static declaration", newdecl, newdecl);
locate_old_decl (olddecl, error);
}
/* Two objects with the same name declared at the same block
scope must both be external references (6.7p3). */
- else if (DECL_CONTEXT (newdecl) == DECL_CONTEXT (olddecl)
- && (!DECL_EXTERNAL (newdecl) || !DECL_EXTERNAL (olddecl)))
+ else if (!DECL_FILE_SCOPE_P (newdecl))
{
if (DECL_EXTERNAL (newdecl))
- error ("%Jextern declaration of '%D' follows "
- "declaration with no linkage", newdecl, newdecl);
+ {
+ /* Extern with initializer at block scope, which will
+ already have received an error. */
+ }
else if (DECL_EXTERNAL (olddecl))
- error ("%Jdeclaration of '%D' with no linkage follows "
- "extern declaration", newdecl, newdecl);
+ {
+ error ("%Jdeclaration of %qD with no linkage follows "
+ "extern declaration", newdecl, newdecl);
+ locate_old_decl (olddecl, error);
+ }
else
- error ("%Jredeclaration of '%D' with no linkage",
- newdecl, newdecl);
+ {
+ error ("%Jredeclaration of %qD with no linkage",
+ newdecl, newdecl);
+ locate_old_decl (olddecl, error);
+ }
- locate_old_decl (olddecl, error);
return false;
}
}
/* warnings */
- /* All decls must agree on a non-default visibility. */
- if (DECL_VISIBILITY (newdecl) != VISIBILITY_DEFAULT
- && DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT
+ /* All decls must agree on a visibility. */
+ if (DECL_VISIBILITY_SPECIFIED (newdecl) && DECL_VISIBILITY_SPECIFIED (olddecl)
&& DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
{
- warning ("%Jredeclaration of '%D' with different visibility "
+ warning ("%Jredeclaration of %qD with different visibility "
"(old visibility preserved)", newdecl, newdecl);
warned = true;
}
if (DECL_DECLARED_INLINE_P (newdecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
{
- warning ("%Jinline declaration of '%D' follows "
+ warning ("%Jinline declaration of %qD follows "
"declaration with attribute noinline", newdecl, newdecl);
warned = true;
}
else if (DECL_DECLARED_INLINE_P (olddecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
{
- warning ("%Jdeclaration of '%D' with attribute noinline follows "
+ warning ("%Jdeclaration of %qD with attribute noinline follows "
"inline declaration ", newdecl, newdecl);
warned = true;
}
/* Inline declaration after use or definition.
??? Should we still warn about this now we have unit-at-a-time
- mode and can get it right? */
- if (DECL_DECLARED_INLINE_P (newdecl) && !DECL_DECLARED_INLINE_P (olddecl))
+ mode and can get it right?
+ Definitely don't complain if the decls are in different translation
+ units. */
+ if (DECL_DECLARED_INLINE_P (newdecl) && !DECL_DECLARED_INLINE_P (olddecl)
+ && same_translation_unit_p (olddecl, newdecl))
{
if (TREE_USED (olddecl))
{
- warning ("%J'%D' declared inline after being called",
+ warning ("%J%qD declared inline after being called",
olddecl, olddecl);
warned = true;
}
else if (DECL_INITIAL (olddecl))
{
- warning ("%J'%D' declared inline after its definition",
+ warning ("%J%qD declared inline after its definition",
olddecl, olddecl);
warned = true;
}
if (TREE_CODE (newdecl) == PARM_DECL
&& (!TREE_ASM_WRITTEN (olddecl) || TREE_ASM_WRITTEN (newdecl)))
{
- error ("%Jredefinition of parameter '%D'", newdecl, newdecl);
+ error ("%Jredefinition of parameter %qD", newdecl, newdecl);
locate_old_decl (olddecl, error);
return false;
}
-
- /* These bits are only type qualifiers when applied to objects. */
- if (TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
- {
- if (TREE_THIS_VOLATILE (newdecl))
- pedwarn ("%Jvolatile declaration of '%D' follows "
- "non-volatile declaration", newdecl, newdecl);
- else
- pedwarn ("%Jnon-volatile declaration of '%D' follows "
- "volatile declaration", newdecl, newdecl);
- pedwarned = true;
- }
- if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl))
- {
- if (TREE_READONLY (newdecl))
- pedwarn ("%Jconst declaration of '%D' follows "
- "non-const declaration", newdecl, newdecl);
- else
- pedwarn ("%Jnon-const declaration of '%D' follows "
- "const declaration", newdecl, newdecl);
- pedwarned = true;
- }
}
/* Optional warning for completely redundant decls. */
definition. */
&& !(TREE_CODE (newdecl) == FUNCTION_DECL
&& DECL_INITIAL (newdecl) && !DECL_INITIAL (olddecl))
+ /* Don't warn about redundant redeclarations of builtins. */
+ && !(TREE_CODE (newdecl) == FUNCTION_DECL
+ && !DECL_BUILT_IN (newdecl)
+ && DECL_BUILT_IN (olddecl)
+ && !C_DECL_DECLARED_BUILTIN (olddecl))
/* Don't warn about an extern followed by a definition. */
&& !(DECL_EXTERNAL (olddecl) && !DECL_EXTERNAL (newdecl))
/* Don't warn about forward parameter decls. */
&& !(TREE_CODE (newdecl) == PARM_DECL
&& TREE_ASM_WRITTEN (olddecl) && !TREE_ASM_WRITTEN (newdecl)))
{
- warning ("%Jredundant redeclaration of '%D'", newdecl, newdecl);
+ warning ("%Jredundant redeclaration of %qD", newdecl, newdecl);
warned = true;
}
in its new location and clear TREE_ASM_WRITTEN (it's not a
forward decl anymore). */
if (TREE_CODE (newdecl) == PARM_DECL
- && TREE_ASM_WRITTEN (olddecl) && ! TREE_ASM_WRITTEN (newdecl))
+ && TREE_ASM_WRITTEN (olddecl) && !TREE_ASM_WRITTEN (newdecl))
{
struct c_binding *b, **here;
for (here = ¤t_scope->bindings; *here; here = &(*here)->prev)
if ((*here)->decl == olddecl)
goto found;
- abort ();
+ gcc_unreachable ();
found:
b = *here;
/* Merge the data types specified in the two decls. */
TREE_TYPE (newdecl)
= TREE_TYPE (olddecl)
- = common_type (newtype, oldtype);
+ = composite_type (newtype, oldtype);
/* Lay the type out, unless already done. */
- if (oldtype != TREE_TYPE (newdecl))
+ if (!comptypes (oldtype, TREE_TYPE (newdecl)))
{
if (TREE_TYPE (newdecl) != error_mark_node)
layout_type (TREE_TYPE (newdecl));
make_var_volatile (newdecl);
}
+ /* Merge deprecatedness. */
+ if (TREE_DEPRECATED (newdecl))
+ TREE_DEPRECATED (olddecl) = 1;
+
/* Keep source location of definition rather than declaration. */
if (DECL_INITIAL (newdecl) == 0 && DECL_INITIAL (olddecl) != 0)
DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
Currently, it can only be defined in the prototype. */
COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
- /* If either declaration has a nondefault visibility, use it. */
- if (DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT)
- DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
+ /* Use visibility of whichever declaration had it specified */
+ if (DECL_VISIBILITY_SPECIFIED (olddecl))
+ {
+ DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
+ DECL_VISIBILITY_SPECIFIED (newdecl) = 1;
+ }
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
copy the attributes of NEWDECL into OLDDECL. */
TREE_PUBLIC (olddecl) = TREE_PUBLIC (newdecl);
/* If this clears `static', clear it in the identifier too. */
- if (! TREE_PUBLIC (olddecl))
+ if (!TREE_PUBLIC (olddecl))
TREE_PUBLIC (DECL_NAME (olddecl)) = 0;
}
if (DECL_EXTERNAL (newdecl))
/* An extern decl does not override previous storage class. */
TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
- if (! DECL_EXTERNAL (newdecl))
+ if (!DECL_EXTERNAL (newdecl))
{
DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
}
/* Also preserve various other info from the definition. */
- if (! new_is_definition)
+ if (!new_is_definition)
{
DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
/* Set DECL_INLINE on the declaration if we've got a body
from which to instantiate. */
- if (DECL_INLINE (olddecl) && ! DECL_UNINLINABLE (newdecl))
+ if (DECL_INLINE (olddecl) && !DECL_UNINLINABLE (newdecl))
{
DECL_INLINE (newdecl) = 1;
DECL_ABSTRACT_ORIGIN (newdecl)
/* If a previous declaration said inline, mark the
definition as inlinable. */
if (DECL_DECLARED_INLINE_P (newdecl)
- && ! DECL_UNINLINABLE (newdecl))
+ && !DECL_UNINLINABLE (newdecl))
DECL_INLINE (newdecl) = 1;
}
}
- /* This bit must not get wiped out. */
- C_DECL_IN_EXTERNAL_SCOPE (newdecl) |= C_DECL_IN_EXTERNAL_SCOPE (olddecl);
-
/* Copy most of the decl-specific fields of NEWDECL into OLDDECL.
- But preserve OLDDECL's DECL_UID. */
+ But preserve OLDDECL's DECL_UID and DECL_CONTEXT. */
{
unsigned olddecl_uid = DECL_UID (olddecl);
+ tree olddecl_context = DECL_CONTEXT (olddecl);
memcpy ((char *) olddecl + sizeof (struct tree_common),
(char *) newdecl + sizeof (struct tree_common),
sizeof (struct tree_decl) - sizeof (struct tree_common));
DECL_UID (olddecl) = olddecl_uid;
+ DECL_CONTEXT (olddecl) = olddecl_context;
}
/* If OLDDECL had its DECL_RTL instantiated, re-invoke make_decl_rtl
&& (TREE_CODE (olddecl) == FUNCTION_DECL
|| (TREE_CODE (olddecl) == VAR_DECL
&& TREE_STATIC (olddecl))))
- make_decl_rtl (olddecl, NULL);
+ make_decl_rtl (olddecl);
}
/* Handle when a new declaration NEWDECL has the same name as an old
merge_decls (newdecl, olddecl, newtype, oldtype);
return true;
}
-
+
\f
-/* Check whether decl-node NEW shadows an existing declaration. */
+/* Check whether decl-node NEW_DECL shadows an existing declaration. */
static void
-warn_if_shadowing (tree new)
+warn_if_shadowing (tree new_decl)
{
struct c_binding *b;
/* Shadow warnings wanted? */
if (!warn_shadow
/* No shadow warnings for internally generated vars. */
- || DECL_SOURCE_LINE (new) == 0
+ || DECL_IS_BUILTIN (new_decl)
/* No shadow warnings for vars made for inlining. */
- || DECL_FROM_INLINE (new)
+ || DECL_FROM_INLINE (new_decl)
/* Don't warn about the parm names in function declarator
within a function declarator. It would be nice to avoid
warning in any function declarator in a declaration, as
opposed to a definition, but there is no way to tell
it's not a definition at this point. */
- || (TREE_CODE (new) == PARM_DECL && current_scope->outer->parm_flag))
+ || (TREE_CODE (new_decl) == PARM_DECL && current_scope->outer->parm_flag))
return;
- /* Is anything being shadowed? Do not be confused by a second binding
- to the same decl in the externals scope. */
- for (b = I_SYMBOL_BINDING (DECL_NAME (new)); b; b = b->shadowed)
- if (b->decl && b->decl != new && b->contour != external_scope)
+ /* Is anything being shadowed? Invisible decls do not count. */
+ for (b = I_SYMBOL_BINDING (DECL_NAME (new_decl)); b; b = b->shadowed)
+ if (b->decl && b->decl != new_decl && !b->invisible)
{
- tree old = b->decl;
-
- if (TREE_CODE (old) == PARM_DECL)
- warning ("%Jdeclaration of '%D' shadows a parameter", new, new);
- else if (DECL_FILE_SCOPE_P (old))
- warning ("%Jdeclaration of '%D' shadows a global declaration",
- new, new);
- else if (TREE_CODE (old) == FUNCTION_DECL && DECL_BUILT_IN (old))
- warning ("%Jdeclaration of '%D' shadows a built-in function",
- new, new);
+ tree old_decl = b->decl;
+
+ if (TREE_CODE (old_decl) == PARM_DECL)
+ warning ("%Jdeclaration of %qD shadows a parameter",
+ new_decl, new_decl);
+ else if (DECL_FILE_SCOPE_P (old_decl))
+ warning ("%Jdeclaration of %qD shadows a global declaration",
+ new_decl, new_decl);
+ else if (TREE_CODE (old_decl) == FUNCTION_DECL
+ && DECL_BUILT_IN (old_decl))
+ warning ("%Jdeclaration of %qD shadows a built-in function",
+ new_decl, new_decl);
else
- warning ("%Jdeclaration of '%D' shadows a previous local", new, new);
+ warning ("%Jdeclaration of %qD shadows a previous local",
+ new_decl, new_decl);
- if (TREE_CODE (old) != FUNCTION_DECL || !DECL_BUILT_IN (old))
- warning ("%Jshadowed declaration is here", old);
+ if (TREE_CODE (old_decl) != FUNCTION_DECL
+ || !DECL_BUILT_IN (old_decl))
+ warning ("%Jshadowed declaration is here", old_decl);
break;
}
static void
clone_underlying_type (tree x)
{
- if (DECL_SOURCE_LINE (x) == 0)
+ if (DECL_IS_BUILTIN (x))
{
if (TYPE_NAME (TREE_TYPE (x)) == 0)
TYPE_NAME (TREE_TYPE (x)) = x;
{
tree tt = TREE_TYPE (x);
DECL_ORIGINAL_TYPE (x) = tt;
- tt = build_type_copy (tt);
+ tt = build_variant_type_copy (tt);
TYPE_NAME (tt) = x;
TREE_USED (tt) = TREE_USED (x);
TREE_TYPE (x) = tt;
tree name = DECL_NAME (x);
struct c_scope *scope = current_scope;
struct c_binding *b;
+ bool nested = false;
/* Functions need the lang_decl data. */
- if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_LANG_SPECIFIC (x))
- DECL_LANG_SPECIFIC (x) = ggc_alloc_cleared (sizeof (struct lang_decl));
+ if (TREE_CODE (x) == FUNCTION_DECL && !DECL_LANG_SPECIFIC (x))
+ DECL_LANG_SPECIFIC (x) = GGC_CNEW (struct lang_decl);
/* Must set DECL_CONTEXT for everything not at file scope or
DECL_FILE_SCOPE_P won't work. Local externs don't count
/* Anonymous decls are just inserted in the scope. */
if (!name)
{
- bind (name, x, scope);
+ bind (name, x, scope, /*invisible=*/false, /*nested=*/false);
return x;
}
diagnostics). In particular, we should not consider possible
duplicates in the external scope, or shadowing. */
b = I_SYMBOL_BINDING (name);
- if (b && b->contour == scope)
+ if (b && B_IN_SCOPE (b, scope))
{
+ if (TREE_CODE (TREE_TYPE (x)) == ARRAY_TYPE
+ && COMPLETE_TYPE_P (TREE_TYPE (x)))
+ b->inner_comp = false;
if (duplicate_decls (x, b->decl))
return b->decl;
else
have compatible type; otherwise, the behavior is undefined.) */
if (DECL_EXTERNAL (x) || scope == file_scope)
{
+ tree type = TREE_TYPE (x);
+ tree vistype = 0;
+ tree visdecl = 0;
+ bool type_saved = false;
+ if (b && !B_IN_EXTERNAL_SCOPE (b)
+ && (TREE_CODE (b->decl) == FUNCTION_DECL
+ || TREE_CODE (b->decl) == VAR_DECL)
+ && DECL_FILE_SCOPE_P (b->decl))
+ {
+ visdecl = b->decl;
+ vistype = TREE_TYPE (visdecl);
+ }
if (warn_nested_externs
&& scope != file_scope
&& !DECL_IN_SYSTEM_HEADER (x))
- warning ("nested extern declaration of `%s'",
- IDENTIFIER_POINTER (name));
+ warning ("nested extern declaration of %qD", x);
- while (b && b->contour != external_scope)
- b = b->shadowed;
+ while (b && !B_IN_EXTERNAL_SCOPE (b))
+ {
+ /* If this decl might be modified, save its type. This is
+ done here rather than when the decl is first bound
+ because the type may change after first binding, through
+ being completed or through attributes being added. If we
+ encounter multiple such decls, only the first should have
+ its type saved; the others will already have had their
+ proper types saved and the types will not have changed as
+ their scopes will not have been re-entered. */
+ if (DECL_FILE_SCOPE_P (b->decl) && !type_saved)
+ {
+ b->type = TREE_TYPE (b->decl);
+ type_saved = true;
+ }
+ if (B_IN_FILE_SCOPE (b)
+ && TREE_CODE (b->decl) == VAR_DECL
+ && TREE_STATIC (b->decl)
+ && TREE_CODE (TREE_TYPE (b->decl)) == ARRAY_TYPE
+ && !TYPE_DOMAIN (TREE_TYPE (b->decl))
+ && TREE_CODE (type) == ARRAY_TYPE
+ && TYPE_DOMAIN (type)
+ && TYPE_MAX_VALUE (TYPE_DOMAIN (type))
+ && !integer_zerop (TYPE_MAX_VALUE (TYPE_DOMAIN (type))))
+ {
+ /* Array type completed in inner scope, which should be
+ diagnosed if the completion does not have size 1 and
+ it does not get completed in the file scope. */
+ b->inner_comp = true;
+ }
+ b = b->shadowed;
+ }
+
+ /* If a matching external declaration has been found, set its
+ type to the composite of all the types of that declaration.
+ After the consistency checks, it will be reset to the
+ composite of the visible types only. */
+ if (b && (TREE_PUBLIC (x) || same_translation_unit_p (x, b->decl))
+ && b->type)
+ TREE_TYPE (b->decl) = b->type;
/* The point of the same_translation_unit_p check here is,
we want to detect a duplicate decl for a construct like
they are in different translation units. In any case,
the static does not go in the externals scope. */
if (b
- && (DECL_EXTERNAL (x) || TREE_PUBLIC (x)
- || same_translation_unit_p (x, b->decl))
+ && (TREE_PUBLIC (x) || same_translation_unit_p (x, b->decl))
+ && duplicate_decls (x, b->decl))
+ {
+ tree thistype;
+ thistype = (vistype ? composite_type (vistype, type) : type);
+ b->type = TREE_TYPE (b->decl);
+ if (TREE_CODE (b->decl) == FUNCTION_DECL && DECL_BUILT_IN (b->decl))
+ thistype
+ = build_type_attribute_variant (thistype,
+ TYPE_ATTRIBUTES (b->type));
+ TREE_TYPE (b->decl) = thistype;
+ bind (name, b->decl, scope, /*invisible=*/false, /*nested=*/true);
+ return b->decl;
+ }
+ else if (TREE_PUBLIC (x))
+ {
+ if (visdecl && !b && duplicate_decls (x, visdecl))
+ {
+ /* An external declaration at block scope referring to a
+ visible entity with internal linkage. The composite
+ type will already be correct for this scope, so we
+ just need to fall through to make the declaration in
+ this scope. */
+ nested = true;
+ x = visdecl;
+ }
+ else
+ {
+ bind (name, x, external_scope, /*invisible=*/true,
+ /*nested=*/false);
+ nested = true;
+ }
+ }
+ }
+ /* Similarly, a declaration of a function with static linkage at
+ block scope must be checked against any existing declaration
+ of that function at file scope. */
+ else if (TREE_CODE (x) == FUNCTION_DECL && scope != file_scope
+ && !TREE_PUBLIC (x) && !DECL_INITIAL (x))
+ {
+ if (warn_nested_externs && !DECL_IN_SYSTEM_HEADER (x))
+ warning ("nested static declaration of %qD", x);
+
+ while (b && !B_IN_FILE_SCOPE (b))
+ b = b->shadowed;
+
+ if (b && same_translation_unit_p (x, b->decl)
&& duplicate_decls (x, b->decl))
{
- bind (name, b->decl, scope);
+ bind (name, b->decl, scope, /*invisible=*/false, /*nested=*/true);
return b->decl;
}
- else if (DECL_EXTERNAL (x) || TREE_PUBLIC (x))
+ else
{
- C_DECL_IN_EXTERNAL_SCOPE (x) = 1;
- bind (name, x, external_scope);
+ bind (name, x, file_scope, /*invisible=*/true, /*nested=*/false);
+ nested = true;
}
}
if (TREE_CODE (x) == TYPE_DECL)
clone_underlying_type (x);
- bind (name, x, scope);
+ bind (name, x, scope, /*invisible=*/false, nested);
/* If x's type is incomplete because it's based on a
structure or union which has not yet been fully declared,
pushdecl_top_level (tree x)
{
tree name;
+ bool nested = false;
- if (TREE_CODE (x) != VAR_DECL)
- abort ();
+ gcc_assert (TREE_CODE (x) == VAR_DECL);
name = DECL_NAME (x);
- if (I_SYMBOL_BINDING (name))
- abort ();
+ gcc_assert (!I_SYMBOL_BINDING (name));
- if (DECL_EXTERNAL (x) || TREE_PUBLIC (x))
+ if (TREE_PUBLIC (x))
{
- C_DECL_IN_EXTERNAL_SCOPE (x) = 1;
- bind (name, x, external_scope);
+ bind (name, x, external_scope, /*invisible=*/true, /*nested=*/false);
+ nested = true;
}
if (file_scope)
- bind (name, x, file_scope);
+ bind (name, x, file_scope, /*invisible=*/false, nested);
return x;
}
case 0: return;
case 1: diag = warning; break;
case 2: diag = error; break;
- default: abort ();
+ default: gcc_unreachable ();
}
- diag (N_("implicit declaration of function '%E'"), id);
+ diag (N_("implicit declaration of function %qE"), id);
if (olddecl)
locate_old_decl (olddecl, diag);
}
tree
implicitly_declare (tree functionid)
{
- tree decl = lookup_name_in_scope (functionid, external_scope);
+ struct c_binding *b;
+ tree decl = 0;
+ tree asmspec_tree;
+
+ for (b = I_SYMBOL_BINDING (functionid); b; b = b->shadowed)
+ {
+ if (B_IN_SCOPE (b, external_scope))
+ {
+ decl = b->decl;
+ break;
+ }
+ }
if (decl)
{
in the external scope because they're pushed before the file
scope gets created. Catch this here and rebind them into the
file scope. */
- if (!DECL_BUILT_IN (decl) && DECL_SOURCE_LINE (decl) == 0)
+ if (!DECL_BUILT_IN (decl) && DECL_IS_BUILTIN (decl))
{
- bind (functionid, decl, file_scope);
+ bind (functionid, decl, file_scope,
+ /*invisible=*/false, /*nested=*/true);
return decl;
}
else
{
+ tree newtype = default_function_type;
+ if (b->type)
+ TREE_TYPE (decl) = b->type;
/* Implicit declaration of a function already declared
(somehow) in a different scope, or as a built-in.
If this is the first time this has happened, warn;
- then recycle the old declaration. */
+ then recycle the old declaration but with the new type. */
if (!C_DECL_IMPLICIT (decl))
{
implicit_decl_warning (functionid, decl);
C_DECL_IMPLICIT (decl) = 1;
}
- bind (functionid, decl, current_scope);
+ if (DECL_BUILT_IN (decl))
+ {
+ newtype = build_type_attribute_variant (newtype,
+ TYPE_ATTRIBUTES
+ (TREE_TYPE (decl)));
+ if (!comptypes (newtype, TREE_TYPE (decl)))
+ {
+ warning ("incompatible implicit declaration of built-in"
+ " function %qD", decl);
+ newtype = TREE_TYPE (decl);
+ }
+ }
+ else
+ {
+ if (!comptypes (newtype, TREE_TYPE (decl)))
+ {
+ error ("incompatible implicit declaration of function %qD",
+ decl);
+ locate_old_decl (decl, error);
+ }
+ }
+ b->type = TREE_TYPE (decl);
+ TREE_TYPE (decl) = newtype;
+ bind (functionid, decl, current_scope,
+ /*invisible=*/false, /*nested=*/true);
return decl;
}
}
TREE_PUBLIC (decl) = 1;
C_DECL_IMPLICIT (decl) = 1;
implicit_decl_warning (functionid, 0);
+ asmspec_tree = maybe_apply_renaming_pragma (decl, /*asmname=*/NULL);
+ if (asmspec_tree)
+ set_user_assembler_name (decl, TREE_STRING_POINTER (asmspec_tree));
/* C89 says implicit declarations are in the innermost block.
So we record the decl in the standard fashion. */
decl = pushdecl (decl);
/* No need to call objc_check_decl here - it's a function type. */
- rest_of_decl_compilation (decl, NULL, 0, 0);
+ rest_of_decl_compilation (decl, 0, 0);
/* Write a record describing this implicit function declaration
to the prototypes file (if requested). */
if (current_function_decl == 0)
{
- error ("'%E' undeclared here (not in a function)", id);
+ error ("%qE undeclared here (not in a function)", id);
scope = current_scope;
}
else
{
- error ("'%E' undeclared (first use in this function)", id);
+ error ("%qE undeclared (first use in this function)", id);
- if (! already)
+ if (!already)
{
error ("(Each undeclared identifier is reported only once");
error ("for each function it appears in.)");
will be nonnull but current_function_scope will be null. */
scope = current_function_scope ? current_function_scope : current_scope;
}
- bind (id, error_mark_node, scope);
+ bind (id, error_mark_node, scope, /*invisible=*/false, /*nested=*/false);
}
\f
/* Subroutine of lookup_label, declare_label, define_label: construct a
if (current_function_decl == 0)
{
- error ("label %s referenced outside of any function",
+ error ("label %qs referenced outside of any function",
IDENTIFIER_POINTER (name));
return 0;
}
label = make_label (name, input_location);
/* Ordinary labels go in the current function scope. */
- bind (name, label, current_function_scope);
+ bind (name, label, current_function_scope,
+ /*invisible=*/false, /*nested=*/false);
return label;
}
/* Check to make sure that the label hasn't already been declared
at this scope */
- if (b && b->contour == current_scope)
+ if (b && B_IN_CURRENT_SCOPE (b))
{
- error ("duplicate label declaration `%s'", IDENTIFIER_POINTER (name));
+ error ("duplicate label declaration %qs", IDENTIFIER_POINTER (name));
locate_old_decl (b->decl, error);
/* Just use the previous declaration. */
C_DECLARED_LABEL_FLAG (label) = 1;
/* Declared labels go in the current scope. */
- bind (name, label, current_scope);
+ bind (name, label, current_scope,
+ /*invisible=*/false, /*nested=*/false);
return label;
}
|| (DECL_CONTEXT (label) != current_function_decl
&& C_DECLARED_LABEL_FLAG (label))))
{
- error ("%Hduplicate label `%D'", &location, label);
+ error ("%Hduplicate label %qD", &location, label);
locate_old_decl (label, error);
return 0;
}
label = make_label (name, location);
/* Ordinary labels go in the current function scope. */
- bind (name, label, current_function_scope);
+ bind (name, label, current_function_scope,
+ /*invisible=*/false, /*nested=*/false);
}
if (warn_traditional && !in_system_header && lookup_name (name))
warning ("%Htraditional C lacks a separate namespace for labels, "
- "identifier `%s' conflicts", &location,
+ "identifier %qs conflicts", &location,
IDENTIFIER_POINTER (name));
/* Mark label as having been defined. */
/* For our purposes, a tag in the external scope is the same as
a tag in the file scope. (Primarily relevant to Objective-C
and its builtin structure tags, which get pushed before the
- file scope is created.) */
- if (b->contour == current_scope
- || (current_scope == file_scope && b->contour == external_scope))
+ file scope is created.) */
+ if (B_IN_CURRENT_SCOPE (b)
+ || (current_scope == file_scope && B_IN_EXTERNAL_SCOPE (b)))
thislevel = 1;
}
pending_xref_error (void)
{
if (pending_invalid_xref != 0)
- error ("%H`%s' defined as wrong kind of tag",
+ error ("%H%qs defined as wrong kind of tag",
&pending_invalid_xref_location,
IDENTIFIER_POINTER (pending_invalid_xref));
pending_invalid_xref = 0;
lookup_name (tree name)
{
struct c_binding *b = I_SYMBOL_BINDING (name);
- if (b && (b->contour != external_scope || TREE_CODE (b->decl) == TYPE_DECL))
+ if (b && !b->invisible)
return b->decl;
return 0;
}
struct c_binding *b;
for (b = I_SYMBOL_BINDING (name); b; b = b->shadowed)
- if (b->contour == scope)
+ if (B_IN_SCOPE (b, scope))
return b->decl;
return 0;
}
current_function_decl = 0;
+ gcc_obstack_init (&parser_obstack);
+
/* Make the externals scope. */
push_scope ();
external_scope = current_scope;
/* Declarations from c_common_nodes_and_builtins must not be associated
with this input file, lest we get differences between using and not
using preprocessed headers. */
- input_location.file = "<internal>";
+#ifdef USE_MAPPED_LOCATION
+ input_location = BUILTINS_LOCATION;
+#else
+ input_location.file = "<built-in>";
input_location.line = 0;
+#endif
- build_common_tree_nodes (flag_signed_char);
+ build_common_tree_nodes (flag_signed_char, false);
c_common_nodes_and_builtins ();
DECL_ARTIFICIAL (decl) = 1;
init = build_string (length + 1, name);
+ free ((char *) name);
TREE_TYPE (init) = type;
DECL_INITIAL (decl) = init;
if (current_function_decl)
{
DECL_CONTEXT (decl) = current_function_decl;
- bind (id, decl, current_function_scope);
+ bind (id, decl, current_function_scope,
+ /*invisible=*/false, /*nested=*/false);
}
finish_decl (decl, init, NULL_TREE);
tree
builtin_function (const char *name, tree type, int function_code,
- enum built_in_class class, const char *library_name,
+ enum built_in_class cl, const char *library_name,
tree attrs)
{
tree id = get_identifier (name);
tree decl = build_decl (FUNCTION_DECL, id, type);
TREE_PUBLIC (decl) = 1;
DECL_EXTERNAL (decl) = 1;
- DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared (sizeof (struct lang_decl));
- DECL_BUILT_IN_CLASS (decl) = class;
+ DECL_LANG_SPECIFIC (decl) = GGC_CNEW (struct lang_decl);
+ DECL_BUILT_IN_CLASS (decl) = cl;
DECL_FUNCTION_CODE (decl) = function_code;
if (library_name)
SET_DECL_ASSEMBLER_NAME (decl, get_identifier (library_name));
- make_decl_rtl (decl, NULL);
/* Should never be called on a symbol with a preexisting meaning. */
- if (I_SYMBOL_BINDING (id))
- abort ();
+ gcc_assert (!I_SYMBOL_BINDING (id));
- C_DECL_IN_EXTERNAL_SCOPE (decl) = 1;
- bind (id, decl, external_scope);
+ bind (id, decl, external_scope, /*invisible=*/true, /*nested=*/false);
/* Builtins in the implementation namespace are made visible without
needing to be explicitly declared. See push_file_scope. */
Otherwise, it is an error. */
void
-shadow_tag (tree declspecs)
+shadow_tag (const struct c_declspecs *declspecs)
{
shadow_tag_warned (declspecs, 0);
}
+/* WARNED is 1 if we have done a pedwarn, 2 if we have done a warning,
+ but no pedwarn. */
void
-shadow_tag_warned (tree declspecs, int warned)
-
-
- /* 1 => we have done a pedwarn. 2 => we have done a warning, but
- no pedwarn. */
+shadow_tag_warned (const struct c_declspecs *declspecs, int warned)
{
- int found_tag = 0;
- tree link;
- tree specs, attrs;
+ bool found_tag = false;
pending_invalid_xref = 0;
- /* Remove the attributes from declspecs, since they will confuse the
- following code. */
- split_specs_attrs (declspecs, &specs, &attrs);
-
- for (link = specs; link; link = TREE_CHAIN (link))
+ if (declspecs->type && !declspecs->default_int_p && !declspecs->typedef_p)
{
- tree value = TREE_VALUE (link);
+ tree value = declspecs->type;
enum tree_code code = TREE_CODE (value);
if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE)
tree name = TYPE_NAME (value);
tree t;
- found_tag++;
+ found_tag = true;
if (name == 0)
{
}
else
{
- if (!warned && ! in_system_header)
+ if (warned != 1 && !in_system_header)
{
- warning ("useless keyword or type name in empty declaration");
- warned = 2;
+ pedwarn ("useless type name in empty declaration");
+ warned = 1;
}
}
}
+ else if (warned != 1 && !in_system_header && declspecs->typedef_p)
+ {
+ pedwarn ("useless type name in empty declaration");
+ warned = 1;
+ }
+
+ if (declspecs->inline_p)
+ {
+ error ("%<inline%> in empty declaration");
+ warned = 1;
+ }
+
+ if (current_scope == file_scope && declspecs->storage_class == csc_auto)
+ {
+ error ("%<auto%> in file-scope empty declaration");
+ warned = 1;
+ }
+
+ if (current_scope == file_scope && declspecs->storage_class == csc_register)
+ {
+ error ("%<register%> in file-scope empty declaration");
+ warned = 1;
+ }
- if (found_tag > 1)
- error ("two types specified in one empty declaration");
+ if (!warned && !in_system_header && declspecs->storage_class != csc_none)
+ {
+ warning ("useless storage class specifier in empty declaration");
+ warned = 2;
+ }
+
+ if (!warned && !in_system_header && declspecs->thread_p)
+ {
+ warning ("useless %<__thread%> in empty declaration");
+ warned = 2;
+ }
+
+ if (!warned && !in_system_header && (declspecs->const_p
+ || declspecs->volatile_p
+ || declspecs->restrict_p))
+ {
+ warning ("useless type qualifier in empty declaration");
+ warned = 2;
+ }
if (warned != 1)
{
- if (found_tag == 0)
+ if (!found_tag)
pedwarn ("empty declaration");
}
}
\f
+
+/* Return the qualifiers from SPECS as a bitwise OR of TYPE_QUAL_*
+ bits. SPECS represents declaration specifiers that the grammar
+ only permits to contain type qualifiers and attributes. */
+
+int
+quals_from_declspecs (const struct c_declspecs *specs)
+{
+ int quals = ((specs->const_p ? TYPE_QUAL_CONST : 0)
+ | (specs->volatile_p ? TYPE_QUAL_VOLATILE : 0)
+ | (specs->restrict_p ? TYPE_QUAL_RESTRICT : 0));
+ gcc_assert (!specs->type
+ && !specs->decl_attr
+ && specs->typespec_word == cts_none
+ && specs->storage_class == csc_none
+ && !specs->typedef_p
+ && !specs->explicit_signed_p
+ && !specs->deprecated_p
+ && !specs->long_p
+ && !specs->long_long_p
+ && !specs->short_p
+ && !specs->signed_p
+ && !specs->unsigned_p
+ && !specs->complex_p
+ && !specs->inline_p
+ && !specs->thread_p);
+ return quals;
+}
+
/* Construct an array declarator. EXPR is the expression inside [], or
NULL_TREE. QUALS are the type qualifiers inside the [] (to be applied
to the pointer to which a parameter array is converted). STATIC_P is
- nonzero if "static" is inside the [], zero otherwise. VLA_UNSPEC_P
- is nonzero is the array is [*], a VLA of unspecified length which is
+ true if "static" is inside the [], false otherwise. VLA_UNSPEC_P
+ is true if the array is [*], a VLA of unspecified length which is
nevertheless a complete type (not currently implemented by GCC),
- zero otherwise. The declarator is constructed as an ARRAY_REF
- (to be decoded by grokdeclarator), whose operand 0 is what's on the
- left of the [] (filled by in set_array_declarator_type) and operand 1
- is the expression inside; whose TREE_TYPE is the type qualifiers and
- which has TREE_STATIC set if "static" is used. */
+ false otherwise. The field for the contained declarator is left to be
+ filled in by set_array_declarator_inner. */
-tree
-build_array_declarator (tree expr, tree quals, int static_p, int vla_unspec_p)
+struct c_declarator *
+build_array_declarator (tree expr, struct c_declspecs *quals, bool static_p,
+ bool vla_unspec_p)
{
- tree decl;
- decl = build_nt (ARRAY_REF, NULL_TREE, expr);
- TREE_TYPE (decl) = quals;
- TREE_STATIC (decl) = (static_p ? 1 : 0);
+ struct c_declarator *declarator = XOBNEW (&parser_obstack,
+ struct c_declarator);
+ declarator->kind = cdk_array;
+ declarator->declarator = 0;
+ declarator->u.array.dimen = expr;
+ if (quals)
+ {
+ declarator->u.array.attrs = quals->attrs;
+ declarator->u.array.quals = quals_from_declspecs (quals);
+ }
+ else
+ {
+ declarator->u.array.attrs = NULL_TREE;
+ declarator->u.array.quals = 0;
+ }
+ declarator->u.array.static_p = static_p;
+ declarator->u.array.vla_unspec_p = vla_unspec_p;
if (pedantic && !flag_isoc99)
{
- if (static_p || quals != NULL_TREE)
- pedwarn ("ISO C90 does not support `static' or type qualifiers in parameter array declarators");
+ if (static_p || quals != NULL)
+ pedwarn ("ISO C90 does not support %<static%> or type "
+ "qualifiers in parameter array declarators");
if (vla_unspec_p)
- pedwarn ("ISO C90 does not support `[*]' array declarators");
+ pedwarn ("ISO C90 does not support %<[*]%> array declarators");
}
if (vla_unspec_p)
- warning ("GCC does not yet properly implement `[*]' array declarators");
- return decl;
+ warning ("GCC does not yet properly implement %<[*]%> array declarators");
+ return declarator;
}
-/* Set the type of an array declarator. DECL is the declarator, as
- constructed by build_array_declarator; TYPE is what appears on the left
- of the [] and goes in operand 0. ABSTRACT_P is nonzero if it is an
- abstract declarator, zero otherwise; this is used to reject static and
- type qualifiers in abstract declarators, where they are not in the
- C99 grammar. */
+/* Set the contained declarator of an array declarator. DECL is the
+ declarator, as constructed by build_array_declarator; INNER is what
+ appears on the left of the []. ABSTRACT_P is true if it is an
+ abstract declarator, false otherwise; this is used to reject static
+ and type qualifiers in abstract declarators, where they are not in
+ the C99 grammar (subject to possible change in DR#289). */
-tree
-set_array_declarator_type (tree decl, tree type, int abstract_p)
+struct c_declarator *
+set_array_declarator_inner (struct c_declarator *decl,
+ struct c_declarator *inner, bool abstract_p)
{
- TREE_OPERAND (decl, 0) = type;
- if (abstract_p && (TREE_TYPE (decl) != NULL_TREE || TREE_STATIC (decl)))
+ decl->declarator = inner;
+ if (abstract_p && (decl->u.array.quals != TYPE_UNQUALIFIED
+ || decl->u.array.attrs != NULL_TREE
+ || decl->u.array.static_p))
error ("static or type qualifiers in abstract declarator");
return decl;
}
/* Decode a "typename", such as "int **", returning a ..._TYPE node. */
tree
-groktypename (tree typename)
+groktypename (struct c_type_name *type_name)
{
- tree specs, attrs;
-
- if (TREE_CODE (typename) != TREE_LIST)
- return typename;
+ tree type;
+ tree attrs = type_name->specs->attrs;
- split_specs_attrs (TREE_PURPOSE (typename), &specs, &attrs);
+ type_name->specs->attrs = NULL_TREE;
- typename = grokdeclarator (TREE_VALUE (typename), specs, TYPENAME, 0,
- NULL);
+ type = grokdeclarator (type_name->declarator, type_name->specs, TYPENAME,
+ false, NULL);
/* Apply attributes. */
- decl_attributes (&typename, attrs, 0);
+ decl_attributes (&type, attrs, 0);
- return typename;
-}
-
-/* Return a PARM_DECL node for a given pair of specs and declarator. */
-
-tree
-groktypename_in_parm_context (tree typename)
-{
- if (TREE_CODE (typename) != TREE_LIST)
- return typename;
- return grokdeclarator (TREE_VALUE (typename),
- TREE_PURPOSE (typename),
- PARM, 0, NULL);
+ return type;
}
/* Decode a declarator in an ordinary declaration or data definition.
grokfield and not through here. */
tree
-start_decl (tree declarator, tree declspecs, int initialized, tree attributes)
+start_decl (struct c_declarator *declarator, struct c_declspecs *declspecs,
+ bool initialized, tree attributes)
{
tree decl;
tree tem;
if (warn_main > 0 && TREE_CODE (decl) != FUNCTION_DECL
&& MAIN_NAME_P (DECL_NAME (decl)))
- warning ("%J'%D' is usually a function", decl, decl);
+ warning ("%J%qD is usually a function", decl, decl);
if (initialized)
/* Is it valid for this decl to have an initializer at all?
switch (TREE_CODE (decl))
{
case TYPE_DECL:
- error ("typedef '%D' is initialized (use __typeof__ instead)", decl);
+ error ("typedef %qD is initialized (use __typeof__ instead)", decl);
initialized = 0;
break;
case FUNCTION_DECL:
- error ("function '%D' is initialized like a variable", decl);
+ error ("function %qD is initialized like a variable", decl);
initialized = 0;
break;
case PARM_DECL:
/* DECL_INITIAL in a PARM_DECL is really DECL_ARG_TYPE. */
- error ("parameter '%D' is initialized", decl);
+ error ("parameter %qD is initialized", decl);
initialized = 0;
break;
}
else if (TREE_CODE (TREE_TYPE (decl)) != ARRAY_TYPE)
{
- error ("variable '%D' has initializer but incomplete type", decl);
+ error ("variable %qD has initializer but incomplete type", decl);
initialized = 0;
}
else if (!COMPLETE_TYPE_P (TREE_TYPE (TREE_TYPE (decl))))
{
- error ("elements of array '%D' have incomplete type", decl);
+ error ("elements of array %qD have incomplete type", decl);
+ initialized = 0;
+ }
+ else if (C_DECL_VARIABLE_SIZE (decl))
+ {
+ /* Although C99 is unclear about whether incomplete arrays
+ of VLAs themselves count as VLAs, it does not make
+ sense to permit them to be initialized given that
+ ordinary VLAs may not be initialized. */
+ error ("variable-sized object may not be initialized");
initialized = 0;
}
}
if (initialized)
{
- DECL_EXTERNAL (decl) = 0;
if (current_scope == file_scope)
TREE_STATIC (decl) = 1;
if (TREE_CODE (decl) == FUNCTION_DECL
&& targetm.calls.promote_prototypes (TREE_TYPE (decl)))
{
- tree ce = declarator;
+ struct c_declarator *ce = declarator;
- if (TREE_CODE (ce) == INDIRECT_REF)
- ce = TREE_OPERAND (declarator, 0);
- if (TREE_CODE (ce) == CALL_EXPR)
+ if (ce->kind == cdk_pointer)
+ ce = declarator->declarator;
+ if (ce->kind == cdk_function)
{
- tree args = TREE_PURPOSE (TREE_OPERAND (ce, 1));
+ tree args = ce->u.arg_info->parms;
for (; args; args = TREE_CHAIN (args))
{
tree type = TREE_TYPE (args);
- if (INTEGRAL_TYPE_P (type)
+ if (type && INTEGRAL_TYPE_P (type)
&& TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
DECL_ARG_TYPE (args) = integer_type_node;
}
&& DECL_DECLARED_INLINE_P (decl)
&& DECL_UNINLINABLE (decl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (decl)))
- warning ("%Jinline function '%D' given attribute noinline", decl, decl);
+ warning ("%Jinline function %qD given attribute noinline", decl, decl);
/* Add this decl to the current scope.
TEM may equal DECL or it may be a previous decl of the same name. */
tem = pushdecl (decl);
+ if (initialized && DECL_EXTERNAL (tem))
+ {
+ DECL_EXTERNAL (tem) = 0;
+ TREE_STATIC (tem) = 1;
+ }
+
return tem;
}
const char *asmspec = 0;
/* If a name was specified, get the string. */
- if (current_scope == file_scope)
+ if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL)
+ && DECL_FILE_SCOPE_P (decl))
asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree);
if (asmspec_tree)
asmspec = TREE_STRING_POINTER (asmspec_tree);
store_init_value (decl, init);
if (c_dialect_objc () && (TREE_CODE (decl) == VAR_DECL
- || TREE_CODE (decl) == FUNCTION_DECL
- || TREE_CODE (decl) == FIELD_DECL))
+ || TREE_CODE (decl) == FUNCTION_DECL
+ || TREE_CODE (decl) == FIELD_DECL))
objc_check_decl (decl);
/* Deduce size of array from initialization, if not already known. */
type = TREE_TYPE (decl);
if (failure == 1)
- error ("%Jinitializer fails to determine size of '%D'", decl, decl);
+ error ("%Jinitializer fails to determine size of %qD", decl, decl);
else if (failure == 2)
{
if (do_default)
- error ("%Jarray size missing in '%D'", decl, decl);
+ error ("%Jarray size missing in %qD", decl, decl);
/* If a `static' var's size isn't known,
make it extern as well as static, so it does not get
allocated.
If it is not `static', then do not mark extern;
finish_incomplete_decl will give it a default size
and it will get allocated. */
- else if (!pedantic && TREE_STATIC (decl) && ! TREE_PUBLIC (decl))
+ else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
DECL_EXTERNAL (decl) = 1;
}
in the array, because we start counting at zero. Therefore,
warn only if the value is less than zero. */
else if (pedantic && TYPE_DOMAIN (type) != 0
- && tree_int_cst_sgn (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) < 0)
- error ("%Jzero or negative size array '%D'", decl, decl);
+ && tree_int_cst_sgn (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) < 0)
+ error ("%Jzero or negative size array %qD", decl, decl);
layout_decl (decl, 0);
}
/* Don't give an error if we already gave one earlier. */
&& TREE_TYPE (decl) != error_mark_node
&& (TREE_STATIC (decl)
- ?
- /* A static variable with an incomplete type
- is an error if it is initialized.
- Also if it is not file scope.
- Otherwise, let it through, but if it is not `extern'
- then it may cause an error message later. */
- (DECL_INITIAL (decl) != 0
+ /* A static variable with an incomplete type
+ is an error if it is initialized.
+ Also if it is not file scope.
+ Otherwise, let it through, but if it is not `extern'
+ then it may cause an error message later. */
+ ? (DECL_INITIAL (decl) != 0
|| !DECL_FILE_SCOPE_P (decl))
- :
- /* An automatic variable with an incomplete type
- is an error. */
- !DECL_EXTERNAL (decl)))
- {
- error ("%Jstorage size of '%D' isn't known", decl, decl);
- TREE_TYPE (decl) = error_mark_node;
- }
+ /* An automatic variable with an incomplete type
+ is an error. */
+ : !DECL_EXTERNAL (decl)))
+ {
+ error ("%Jstorage size of %qD isn%'t known", decl, decl);
+ TREE_TYPE (decl) = error_mark_node;
+ }
if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
&& DECL_SIZE (decl) != 0)
if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
constant_expression_warning (DECL_SIZE (decl));
else
- error ("%Jstorage size of '%D' isn't constant", decl, decl);
+ error ("%Jstorage size of %qD isn%'t constant", decl, decl);
}
if (TREE_USED (type))
was a normal built-in. */
if (TREE_CODE (decl) == FUNCTION_DECL && asmspec)
{
- /* ASMSPEC is given, and not the name of a register. Mark the
- name with a star so assemble_name won't munge it. */
- char *starred = alloca (strlen (asmspec) + 2);
- starred[0] = '*';
- strcpy (starred + 1, asmspec);
-
if (DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
{
tree builtin = built_in_decls [DECL_FUNCTION_CODE (decl)];
- SET_DECL_RTL (builtin, NULL_RTX);
- SET_DECL_ASSEMBLER_NAME (builtin, get_identifier (starred));
-#ifdef TARGET_MEM_FUNCTIONS
- if (DECL_FUNCTION_CODE (decl) == BUILT_IN_MEMCPY)
- init_block_move_fn (starred);
- else if (DECL_FUNCTION_CODE (decl) == BUILT_IN_MEMSET)
- init_block_clear_fn (starred);
-#else
- if (DECL_FUNCTION_CODE (decl) == BUILT_IN_BCOPY)
- init_block_move_fn (starred);
- else if (DECL_FUNCTION_CODE (decl) == BUILT_IN_BZERO)
- init_block_clear_fn (starred);
-#endif
- }
- SET_DECL_RTL (decl, NULL_RTX);
- change_decl_assembler_name (decl, get_identifier (starred));
+ set_user_assembler_name (builtin, asmspec);
+ if (DECL_FUNCTION_CODE (decl) == BUILT_IN_MEMCPY)
+ init_block_move_fn (asmspec);
+ else if (DECL_FUNCTION_CODE (decl) == BUILT_IN_MEMSET)
+ init_block_clear_fn (asmspec);
+ }
+ set_user_assembler_name (decl, asmspec);
}
/* If #pragma weak was used, mark the decl weak now. */
if (current_scope == file_scope)
maybe_apply_pragma_weak (decl);
+ /* If this is a variable definition, determine its ELF visibility. */
+ if (TREE_CODE (decl) == VAR_DECL
+ && TREE_STATIC (decl)
+ && !DECL_EXTERNAL (decl))
+ c_determine_visibility (decl);
+
/* Output the assembler code and/or RTL code for variables and functions,
unless the type is an undefined structure or union.
If not, it will get done when the type is completed. */
if (c_dialect_objc ())
objc_check_decl (decl);
+ if (asmspec)
+ {
+ /* If this is not a static variable, issue a warning.
+ It doesn't make any sense to give an ASMSPEC for an
+ ordinary, non-register local variable. Historically,
+ GCC has accepted -- but ignored -- the ASMSPEC in
+ this case. */
+ if (!DECL_FILE_SCOPE_P (decl)
+ && TREE_CODE (decl) == VAR_DECL
+ && !C_DECL_REGISTER (decl)
+ && !TREE_STATIC (decl))
+ warning ("%Jignoring asm-specifier for non-static local "
+ "variable %qD", decl, decl);
+ else if (C_DECL_REGISTER (decl))
+ change_decl_assembler_name (decl, get_identifier (asmspec));
+ else
+ set_user_assembler_name (decl, asmspec);
+ }
+
if (DECL_FILE_SCOPE_P (decl))
{
if (DECL_INITIAL (decl) == NULL_TREE
when a tentative file-scope definition is seen.
But at end of compilation, do output code for them. */
DECL_DEFER_OUTPUT (decl) = 1;
- rest_of_decl_compilation (decl, asmspec, true, 0);
+ rest_of_decl_compilation (decl, true, 0);
}
else
{
- /* This is a local variable. If there is an ASMSPEC, the
- user has requested that we handle it specially. */
- if (asmspec)
+ /* In conjunction with an ASMSPEC, the `register'
+ keyword indicates that we should place the variable
+ in a particular register. */
+ if (asmspec && C_DECL_REGISTER (decl))
{
- /* In conjunction with an ASMSPEC, the `register'
- keyword indicates that we should place the variable
- in a particular register. */
- if (C_DECL_REGISTER (decl))
- {
- DECL_HARD_REGISTER (decl) = 1;
- /* This cannot be done for a structure with volatile
- fields, on which DECL_REGISTER will have been
- reset. */
- if (!DECL_REGISTER (decl))
- error ("cannot put object with volatile field into register");
- }
-
- /* If this is not a static variable, issue a warning.
- It doesn't make any sense to give an ASMSPEC for an
- ordinary, non-register local variable. Historically,
- GCC has accepted -- but ignored -- the ASMSPEC in
- this case. */
- if (TREE_CODE (decl) == VAR_DECL
- && !C_DECL_REGISTER (decl)
- && !TREE_STATIC (decl))
- warning ("%Jignoring asm-specifier for non-static local "
- "variable '%D'", decl, decl);
- else
- change_decl_assembler_name (decl, get_identifier (asmspec));
+ DECL_HARD_REGISTER (decl) = 1;
+ /* This cannot be done for a structure with volatile
+ fields, on which DECL_REGISTER will have been
+ reset. */
+ if (!DECL_REGISTER (decl))
+ error ("cannot put object with volatile field into register");
}
if (TREE_CODE (decl) != FUNCTION_DECL)
- add_decl_stmt (decl);
+ {
+ /* If we're building a variable sized type, and we might be
+ reachable other than via the top of the current binding
+ level, then create a new BIND_EXPR so that we deallocate
+ the object at the right time. */
+ /* Note that DECL_SIZE can be null due to errors. */
+ if (DECL_SIZE (decl)
+ && !TREE_CONSTANT (DECL_SIZE (decl))
+ && STATEMENT_LIST_HAS_LABEL (cur_stmt_list))
+ {
+ tree bind;
+ bind = build3 (BIND_EXPR, void_type_node, NULL, NULL, NULL);
+ TREE_SIDE_EFFECTS (bind) = 1;
+ add_stmt (bind);
+ BIND_EXPR_BODY (bind) = push_stmt_list ();
+ }
+ add_stmt (build_stmt (DECL_EXPR, decl));
+ }
}
+
if (!DECL_FILE_SCOPE_P (decl))
{
/* Recompute the RTL of a local array now
if it used to be an incomplete type. */
if (was_incomplete
- && ! TREE_STATIC (decl) && ! DECL_EXTERNAL (decl))
+ && !TREE_STATIC (decl) && !DECL_EXTERNAL (decl))
{
/* If we used it already as memory, it must stay in memory. */
TREE_ADDRESSABLE (decl) = TREE_USED (decl);
if (TREE_CODE (decl) == TYPE_DECL)
{
if (!DECL_FILE_SCOPE_P (decl)
- && variably_modified_type_p (TREE_TYPE (decl)))
- add_decl_stmt (decl);
+ && variably_modified_type_p (TREE_TYPE (decl), NULL_TREE))
+ add_stmt (build_stmt (DECL_EXPR, decl));
- rest_of_decl_compilation (decl, NULL, DECL_FILE_SCOPE_P (decl), 0);
+ rest_of_decl_compilation (decl, DECL_FILE_SCOPE_P (decl), 0);
}
/* At the end of a declaration, throw away any variable type sizes
tree attr = lookup_attribute ("cleanup", DECL_ATTRIBUTES (decl));
if (attr)
{
- static bool eh_initialized_p;
-
tree cleanup_id = TREE_VALUE (TREE_VALUE (attr));
tree cleanup_decl = lookup_name (cleanup_id);
tree cleanup;
/* Don't warn about decl unused; the cleanup uses it. */
TREE_USED (decl) = 1;
+ TREE_USED (cleanup_decl) = 1;
/* Initialize EH, if we've been told to do so. */
- if (flag_exceptions && !eh_initialized_p)
+ if (flag_exceptions && !c_eh_initialized_p)
{
- eh_initialized_p = true;
+ c_eh_initialized_p = true;
eh_personality_libfunc
= init_one_libfunc (USING_SJLJ_EXCEPTIONS
? "__gcc_personality_sj0"
using_eh_for_cleanups ();
}
- add_stmt (build_stmt (CLEANUP_STMT, decl, cleanup));
+ push_cleanup (decl, cleanup, false);
}
}
}
+/* Given a parsed parameter declaration, decode it into a PARM_DECL. */
+
+tree
+grokparm (const struct c_parm *parm)
+{
+ tree decl = grokdeclarator (parm->declarator, parm->specs, PARM, false,
+ NULL);
+
+ decl_attributes (&decl, parm->attrs, 0);
+
+ return decl;
+}
+
/* Given a parsed parameter declaration, decode it into a PARM_DECL
and push that on the current scope. */
void
-push_parm_decl (tree parm)
+push_parm_decl (const struct c_parm *parm)
{
tree decl;
- /* Don't attempt to expand sizes while parsing this decl.
- (We can get here with i_s_e 1 somehow from Objective-C.) */
- int save_immediate_size_expand = immediate_size_expand;
- immediate_size_expand = 0;
-
- decl = grokdeclarator (TREE_VALUE (TREE_PURPOSE (parm)),
- TREE_PURPOSE (TREE_PURPOSE (parm)),
- PARM, 0, NULL);
- decl_attributes (&decl, TREE_VALUE (parm), 0);
+ decl = grokdeclarator (parm->declarator, parm->specs, PARM, false, NULL);
+ decl_attributes (&decl, parm->attrs, 0);
decl = pushdecl (decl);
finish_decl (decl, NULL_TREE, NULL_TREE);
-
- immediate_size_expand = save_immediate_size_expand;
}
/* Mark all the parameter declarations to date as forward decls.
{
/* We do not use start_decl here because we have a type, not a declarator;
and do not use finish_decl because the decl should be stored inside
- the COMPOUND_LITERAL_EXPR rather than added elsewhere as a DECL_STMT. */
- tree decl = build_decl (VAR_DECL, NULL_TREE, type);
+ the COMPOUND_LITERAL_EXPR rather than added elsewhere as a DECL_EXPR. */
+ tree decl;
tree complit;
tree stmt;
+
+ if (type == error_mark_node)
+ return error_mark_node;
+
+ decl = build_decl (VAR_DECL, NULL_TREE, type);
DECL_EXTERNAL (decl) = 0;
TREE_PUBLIC (decl) = 0;
TREE_STATIC (decl) = (current_scope == file_scope);
if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
{
int failure = complete_array_type (type, DECL_INITIAL (decl), 1);
- if (failure)
- abort ();
+
+ gcc_assert (!failure);
}
type = TREE_TYPE (decl);
if (type == error_mark_node || !COMPLETE_TYPE_P (type))
return error_mark_node;
- stmt = build_stmt (DECL_STMT, decl);
+ stmt = build_stmt (DECL_EXPR, decl);
complit = build1 (COMPOUND_LITERAL_EXPR, TREE_TYPE (decl), stmt);
TREE_SIDE_EFFECTS (complit) = 1;
DECL_COMDAT (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
pushdecl (decl);
- rest_of_decl_compilation (decl, NULL, 1, 0);
+ rest_of_decl_compilation (decl, 1, 0);
}
return complit;
{
int eltsize
= int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
- maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
- / eltsize) - 1, 0);
+ maxindex = build_int_cst (NULL_TREE,
+ (TREE_STRING_LENGTH (initial_value)
+ / eltsize) - 1);
}
else if (TREE_CODE (initial_value) == CONSTRUCTOR)
{
tree elts = CONSTRUCTOR_ELTS (initial_value);
- maxindex = build_int_2 (-1, -1);
+ maxindex = build_int_cst (NULL_TREE, -1);
for (; elts; elts = TREE_CHAIN (elts))
{
if (TREE_PURPOSE (elts))
maxindex = TREE_PURPOSE (elts);
else
- maxindex = fold (build (PLUS_EXPR, integer_type_node,
- maxindex, integer_one_node));
+ maxindex = fold (build2 (PLUS_EXPR, integer_type_node,
+ maxindex, integer_one_node));
}
- maxindex = copy_node (maxindex);
}
else
{
value = 1;
/* Prevent further error messages. */
- maxindex = build_int_2 (0, 0);
+ maxindex = build_int_cst (NULL_TREE, 0);
}
}
if (!maxindex)
{
if (do_default)
- maxindex = build_int_2 (0, 0);
+ maxindex = build_int_cst (NULL_TREE, 0);
value = 2;
}
if (maxindex)
{
TYPE_DOMAIN (type) = build_index_type (maxindex);
- if (!TREE_TYPE (maxindex))
- TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
+
+ gcc_assert (TREE_TYPE (maxindex));
}
/* Lay out the type now that we can get the real answer. */
field widths. */
if (TREE_CODE (*width) != INTEGER_CST)
{
- error ("bit-field `%s' width not an integer constant", name);
+ error ("bit-field %qs width not an integer constant", name);
*width = integer_one_node;
}
else
constant_expression_warning (*width);
if (tree_int_cst_sgn (*width) < 0)
{
- error ("negative width in bit-field `%s'", name);
+ error ("negative width in bit-field %qs", name);
*width = integer_one_node;
}
else if (integer_zerop (*width) && orig_name)
{
- error ("zero width for bit-field `%s'", name);
+ error ("zero width for bit-field %qs", name);
*width = integer_one_node;
}
}
&& TREE_CODE (*type) != BOOLEAN_TYPE
&& TREE_CODE (*type) != ENUMERAL_TYPE)
{
- error ("bit-field `%s' has invalid type", name);
+ error ("bit-field %qs has invalid type", name);
*type = unsigned_type_node;
}
&& type_mv != integer_type_node
&& type_mv != unsigned_type_node
&& type_mv != boolean_type_node)
- pedwarn ("type of bit-field `%s' is a GCC extension", name);
+ pedwarn ("type of bit-field %qs is a GCC extension", name);
if (type_mv == boolean_type_node)
max_width = CHAR_TYPE_SIZE;
if (0 < compare_tree_int (*width, max_width))
{
- error ("width of `%s' exceeds its type", name);
+ error ("width of %qs exceeds its type", name);
w = max_width;
- *width = build_int_2 (w, 0);
+ *width = build_int_cst (NULL_TREE, w);
}
else
w = tree_low_cst (*width, 1);
if (TREE_CODE (*type) == ENUMERAL_TYPE)
{
struct lang_type *lt = TYPE_LANG_SPECIFIC (*type);
- if (!lt
+ if (!lt
|| w < min_precision (lt->enum_min, TYPE_UNSIGNED (*type))
|| w < min_precision (lt->enum_max, TYPE_UNSIGNED (*type)))
- warning ("`%s' is narrower than values of its type", name);
+ warning ("%qs is narrower than values of its type", name);
}
}
\f
(In one case we can return a ..._TYPE node instead.
For invalid input we sometimes return 0.)
- DECLSPECS is a chain of tree_list nodes whose value fields
- are the storage classes and type specifiers.
+ DECLSPECS is a c_declspecs structure for the declaration specifiers.
DECL_CONTEXT says which syntactic context this declaration is in:
NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
TYPENAME if for a typename (in a cast or sizeof).
Don't make a DECL node; just return the ..._TYPE node.
FIELD for a struct or union field; make a FIELD_DECL.
- INITIALIZED is 1 if the decl has an initializer.
+ INITIALIZED is true if the decl has an initializer.
WIDTH is non-NULL for bit-fields, and is a pointer to an INTEGER_CST node
representing the width of the bit-field.
and `extern' are interpreted. */
static tree
-grokdeclarator (tree declarator, tree declspecs,
- enum decl_context decl_context, int initialized, tree *width)
+grokdeclarator (const struct c_declarator *declarator,
+ struct c_declspecs *declspecs,
+ enum decl_context decl_context, bool initialized, tree *width)
{
- int specbits = 0;
- tree spec;
- tree type = NULL_TREE;
- int longlong = 0;
+ tree type = declspecs->type;
+ bool threadp = declspecs->thread_p;
+ enum c_storage_class storage_class = declspecs->storage_class;
int constp;
int restrictp;
int volatilep;
int type_quals = TYPE_UNQUALIFIED;
- int inlinep;
- int explicit_int = 0;
- int explicit_char = 0;
- int defaulted_int = 0;
- tree typedef_decl = 0;
const char *name, *orig_name;
tree typedef_type = 0;
int funcdef_flag = 0;
- enum tree_code innermost_code = ERROR_MARK;
+ bool funcdef_syntax = false;
int size_varies = 0;
- tree decl_attr = NULL_TREE;
- tree array_ptr_quals = NULL_TREE;
+ tree decl_attr = declspecs->decl_attr;
+ int array_ptr_quals = TYPE_UNQUALIFIED;
+ tree array_ptr_attrs = NULL_TREE;
int array_parm_static = 0;
tree returned_attrs = NULL_TREE;
bool bitfield = width != NULL;
tree element_type;
- tree arg_info = NULL_TREE;
+ struct c_arg_info *arg_info = 0;
if (decl_context == FUNCDEF)
funcdef_flag = 1, decl_context = NORMAL;
/* Look inside a declarator for the name being declared
and get it as a string, for an error message. */
{
- tree decl = declarator;
+ const struct c_declarator *decl = declarator;
name = 0;
while (decl)
- switch (TREE_CODE (decl))
+ switch (decl->kind)
{
- case ARRAY_REF:
- case INDIRECT_REF:
- case CALL_EXPR:
- innermost_code = TREE_CODE (decl);
- decl = TREE_OPERAND (decl, 0);
+ case cdk_function:
+ case cdk_array:
+ case cdk_pointer:
+ funcdef_syntax = (decl->kind == cdk_function);
+ decl = decl->declarator;
break;
- case TREE_LIST:
- decl = TREE_VALUE (decl);
+ case cdk_attrs:
+ decl = decl->declarator;
break;
- case IDENTIFIER_NODE:
- name = IDENTIFIER_POINTER (decl);
+ case cdk_id:
+ if (decl->u.id)
+ name = IDENTIFIER_POINTER (decl->u.id);
decl = 0;
break;
default:
- abort ();
+ gcc_unreachable ();
}
orig_name = name;
if (name == 0)
/* A function definition's declarator must have the form of
a function declarator. */
- if (funcdef_flag && innermost_code != CALL_EXPR)
+ if (funcdef_flag && !funcdef_syntax)
return 0;
/* If this looks like a function definition, make it one,
if (decl_context == NORMAL && !funcdef_flag && current_scope->parm_flag)
decl_context = PARM;
- /* Look through the decl specs and record which ones appear.
- Some typespecs are defined as built-in typenames.
- Others, the ones that are modifiers of other types,
- are represented by bits in SPECBITS: set the bits for
- the modifiers that appear. Storage class keywords are also in SPECBITS.
+ if (declspecs->deprecated_p && deprecated_state != DEPRECATED_SUPPRESS)
+ warn_deprecated_use (declspecs->type);
- If there is a typedef name or a type, store the type in TYPE.
- This includes builtin typedefs such as `int'.
-
- Set EXPLICIT_INT or EXPLICIT_CHAR if the type is `int' or `char'
- and did not come from a user typedef.
+ typedef_type = type;
+ size_varies = C_TYPE_VARIABLE_SIZE (type);
- Set LONGLONG if `long' is mentioned twice. */
+ /* Diagnose defaulting to "int". */
- for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
+ if (declspecs->default_int_p && !in_system_header)
{
- tree id = TREE_VALUE (spec);
-
- /* If the entire declaration is itself tagged as deprecated then
- suppress reports of deprecated items. */
- if (id && TREE_DEPRECATED (id))
- {
- if (deprecated_state != DEPRECATED_SUPPRESS)
- warn_deprecated_use (id);
- }
+ /* Issue a warning if this is an ISO C 99 program or if
+ -Wreturn-type and this is a function, or if -Wimplicit;
+ prefer the former warning since it is more explicit. */
+ if ((warn_implicit_int || warn_return_type || flag_isoc99)
+ && funcdef_flag)
+ warn_about_return_type = 1;
+ else if (warn_implicit_int || flag_isoc99)
+ pedwarn_c99 ("type defaults to %<int%> in declaration of %qs", name);
+ }
- if (id == ridpointers[(int) RID_INT])
- explicit_int = 1;
- if (id == ridpointers[(int) RID_CHAR])
- explicit_char = 1;
+ /* Adjust the type if a bit-field is being declared,
+ -funsigned-bitfields applied and the type is not explicitly
+ "signed". */
+ if (bitfield && !flag_signed_bitfields && !declspecs->explicit_signed_p
+ && TREE_CODE (type) == INTEGER_TYPE)
+ type = c_common_unsigned_type (type);
- if (TREE_CODE (id) == IDENTIFIER_NODE && C_IS_RESERVED_WORD (id))
- {
- enum rid i = C_RID_CODE (id);
- if ((int) i <= (int) RID_LAST_MODIFIER)
- {
- if (i == RID_LONG && (specbits & (1 << (int) RID_LONG)))
- {
- if (longlong)
- error ("`long long long' is too long for GCC");
- else
- {
- if (pedantic && !flag_isoc99 && ! in_system_header
- && warn_long_long)
- pedwarn ("ISO C90 does not support `long long'");
- longlong = 1;
- }
- }
- else if (specbits & (1 << (int) i))
- {
- if (i == RID_CONST || i == RID_VOLATILE || i == RID_RESTRICT)
- {
- if (pedantic && !flag_isoc99)
- pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
- }
- else
- error ("duplicate `%s'", IDENTIFIER_POINTER (id));
- }
-
- /* Diagnose "__thread extern". Recall that this list
- is in the reverse order seen in the text. */
- if (i == RID_THREAD
- && (specbits & (1 << (int) RID_EXTERN
- | 1 << (int) RID_STATIC)))
- {
- if (specbits & 1 << (int) RID_EXTERN)
- error ("`__thread' before `extern'");
- else
- error ("`__thread' before `static'");
- }
-
- specbits |= 1 << (int) i;
- goto found;
- }
- }
- if (type)
- error ("two or more data types in declaration of `%s'", name);
- /* Actual typedefs come to us as TYPE_DECL nodes. */
- else if (TREE_CODE (id) == TYPE_DECL)
- {
- if (TREE_TYPE (id) == error_mark_node)
- ; /* Allow the type to default to int to avoid cascading errors. */
- else
- {
- type = TREE_TYPE (id);
- decl_attr = DECL_ATTRIBUTES (id);
- typedef_decl = id;
- }
- }
- /* Built-in types come as identifiers. */
- else if (TREE_CODE (id) == IDENTIFIER_NODE)
- {
- tree t = lookup_name (id);
- if (!t || TREE_CODE (t) != TYPE_DECL)
- error ("`%s' fails to be a typedef or built in type",
- IDENTIFIER_POINTER (id));
- else if (TREE_TYPE (t) == error_mark_node)
- ;
- else
- {
- type = TREE_TYPE (t);
- typedef_decl = t;
- }
- }
- else if (TREE_CODE (id) != ERROR_MARK)
- type = id;
-
- found:
- ;
- }
-
- typedef_type = type;
- if (type)
- size_varies = C_TYPE_VARIABLE_SIZE (type);
-
- /* No type at all: default to `int', and set DEFAULTED_INT
- because it was not a user-defined typedef. */
-
- if (type == 0)
- {
- if ((! (specbits & ((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_SIGNED)
- | (1 << (int) RID_UNSIGNED)
- | (1 << (int) RID_COMPLEX))))
- /* Don't warn about typedef foo = bar. */
- && ! (specbits & (1 << (int) RID_TYPEDEF) && initialized)
- && ! in_system_header)
- {
- /* Issue a warning if this is an ISO C 99 program or if -Wreturn-type
- and this is a function, or if -Wimplicit; prefer the former
- warning since it is more explicit. */
- if ((warn_implicit_int || warn_return_type || flag_isoc99)
- && funcdef_flag)
- warn_about_return_type = 1;
- else if (warn_implicit_int || flag_isoc99)
- pedwarn_c99 ("type defaults to `int' in declaration of `%s'",
- name);
- }
-
- defaulted_int = 1;
- type = integer_type_node;
- }
-
- /* Now process the modifiers that were specified
- and check for invalid combinations. */
-
- /* Long double is a special combination. */
-
- if ((specbits & 1 << (int) RID_LONG) && ! longlong
- && TYPE_MAIN_VARIANT (type) == double_type_node)
- {
- specbits &= ~(1 << (int) RID_LONG);
- type = long_double_type_node;
- }
-
- /* Check all other uses of type modifiers. */
-
- if (specbits & ((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_UNSIGNED) | (1 << (int) RID_SIGNED)))
- {
- int ok = 0;
-
- if ((specbits & 1 << (int) RID_LONG)
- && (specbits & 1 << (int) RID_SHORT))
- error ("both long and short specified for `%s'", name);
- else if (((specbits & 1 << (int) RID_LONG)
- || (specbits & 1 << (int) RID_SHORT))
- && explicit_char)
- error ("long or short specified with char for `%s'", name);
- else if (((specbits & 1 << (int) RID_LONG)
- || (specbits & 1 << (int) RID_SHORT))
- && TREE_CODE (type) == REAL_TYPE)
- {
- static int already = 0;
-
- error ("long or short specified with floating type for `%s'", name);
- if (! already && ! pedantic)
- {
- error ("the only valid combination is `long double'");
- already = 1;
- }
- }
- else if ((specbits & 1 << (int) RID_SIGNED)
- && (specbits & 1 << (int) RID_UNSIGNED))
- error ("both signed and unsigned specified for `%s'", name);
- else if (TREE_CODE (type) != INTEGER_TYPE)
- error ("long, short, signed or unsigned invalid for `%s'", name);
- else
- {
- ok = 1;
- if (!explicit_int && !defaulted_int && !explicit_char)
- {
- error ("long, short, signed or unsigned used invalidly for `%s'",
- name);
- ok = 0;
- }
- }
-
- /* Discard the type modifiers if they are invalid. */
- if (! ok)
- {
- specbits &= ~((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_UNSIGNED) | (1 << (int) RID_SIGNED));
- longlong = 0;
- }
- }
-
- if ((specbits & (1 << (int) RID_COMPLEX))
- && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
- {
- error ("complex invalid for `%s'", name);
- specbits &= ~(1 << (int) RID_COMPLEX);
- }
-
- /* Decide whether an integer type is signed or not.
- Optionally treat bit-fields as signed by default. */
- if (specbits & 1 << (int) RID_UNSIGNED
- || (bitfield && ! flag_signed_bitfields
- && (explicit_int || defaulted_int || explicit_char
- /* A typedef for plain `int' without `signed'
- can be controlled just like plain `int'. */
- || ! (typedef_decl != 0
- && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
- && TREE_CODE (type) != ENUMERAL_TYPE
- && !(specbits & 1 << (int) RID_SIGNED)))
- {
- if (longlong)
- type = long_long_unsigned_type_node;
- else if (specbits & 1 << (int) RID_LONG)
- type = long_unsigned_type_node;
- else if (specbits & 1 << (int) RID_SHORT)
- type = short_unsigned_type_node;
- else if (type == char_type_node)
- type = unsigned_char_type_node;
- else if (typedef_decl)
- type = c_common_unsigned_type (type);
- else
- type = unsigned_type_node;
- }
- else if ((specbits & 1 << (int) RID_SIGNED)
- && type == char_type_node)
- type = signed_char_type_node;
- else if (longlong)
- type = long_long_integer_type_node;
- else if (specbits & 1 << (int) RID_LONG)
- type = long_integer_type_node;
- else if (specbits & 1 << (int) RID_SHORT)
- type = short_integer_type_node;
-
- if (specbits & 1 << (int) RID_COMPLEX)
- {
- if (pedantic && !flag_isoc99)
- pedwarn ("ISO C90 does not support complex types");
- /* If we just have "complex", it is equivalent to
- "complex double", but if any modifiers at all are specified it is
- the complex form of TYPE. E.g, "complex short" is
- "complex short int". */
-
- if (defaulted_int && ! longlong
- && ! (specbits & ((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_SIGNED)
- | (1 << (int) RID_UNSIGNED))))
- {
- if (pedantic)
- pedwarn ("ISO C does not support plain `complex' meaning `double complex'");
- type = complex_double_type_node;
- }
- else if (type == integer_type_node)
- {
- if (pedantic)
- pedwarn ("ISO C does not support complex integer types");
- type = complex_integer_type_node;
- }
- else if (type == float_type_node)
- type = complex_float_type_node;
- else if (type == double_type_node)
- type = complex_double_type_node;
- else if (type == long_double_type_node)
- type = complex_long_double_type_node;
- else
- {
- if (pedantic)
- pedwarn ("ISO C does not support complex integer types");
- type = build_complex_type (type);
- }
- }
-
- /* Check the type and width of a bit-field. */
- if (bitfield)
- check_bitfield_type_and_width (&type, width, orig_name);
+ /* Check the type and width of a bit-field. */
+ if (bitfield)
+ check_bitfield_type_and_width (&type, width, orig_name);
/* Figure out the type qualifiers for the declaration. There are
two ways a declaration can become qualified. One is something
duplicate qualifiers should be diagnosed in this case, but it
seems most appropriate to do so). */
element_type = strip_array_types (type);
- constp = !! (specbits & 1 << (int) RID_CONST) + TYPE_READONLY (element_type);
- restrictp
- = !! (specbits & 1 << (int) RID_RESTRICT) + TYPE_RESTRICT (element_type);
- volatilep
- = !! (specbits & 1 << (int) RID_VOLATILE) + TYPE_VOLATILE (element_type);
- inlinep = !! (specbits & (1 << (int) RID_INLINE));
+ constp = declspecs->const_p + TYPE_READONLY (element_type);
+ restrictp = declspecs->restrict_p + TYPE_RESTRICT (element_type);
+ volatilep = declspecs->volatile_p + TYPE_VOLATILE (element_type);
if (pedantic && !flag_isoc99)
{
if (constp > 1)
- pedwarn ("duplicate `const'");
+ pedwarn ("duplicate %<const%>");
if (restrictp > 1)
- pedwarn ("duplicate `restrict'");
+ pedwarn ("duplicate %<restrict%>");
if (volatilep > 1)
- pedwarn ("duplicate `volatile'");
+ pedwarn ("duplicate %<volatile%>");
}
- if (! flag_gen_aux_info && (TYPE_QUALS (type)))
+ if (!flag_gen_aux_info && (TYPE_QUALS (type)))
type = TYPE_MAIN_VARIANT (type);
type_quals = ((constp ? TYPE_QUAL_CONST : 0)
| (restrictp ? TYPE_QUAL_RESTRICT : 0)
| (volatilep ? TYPE_QUAL_VOLATILE : 0));
- /* Warn if two storage classes are given. Default to `auto'. */
-
- {
- int nclasses = 0;
-
- if (specbits & 1 << (int) RID_AUTO) nclasses++;
- if (specbits & 1 << (int) RID_STATIC) nclasses++;
- if (specbits & 1 << (int) RID_EXTERN) nclasses++;
- if (specbits & 1 << (int) RID_REGISTER) nclasses++;
- if (specbits & 1 << (int) RID_TYPEDEF) nclasses++;
-
- /* "static __thread" and "extern __thread" are allowed. */
- if ((specbits & (1 << (int) RID_THREAD
- | 1 << (int) RID_STATIC
- | 1 << (int) RID_EXTERN)) == (1 << (int) RID_THREAD))
- nclasses++;
-
- /* Warn about storage classes that are invalid for certain
- kinds of declarations (parameters, typenames, etc.). */
-
- if (nclasses > 1)
- error ("multiple storage classes in declaration of `%s'", name);
- else if (funcdef_flag
- && (specbits
- & ((1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO)
- | (1 << (int) RID_TYPEDEF)
- | (1 << (int) RID_THREAD))))
- {
- if (specbits & 1 << (int) RID_AUTO
- && (pedantic || current_scope == file_scope))
- pedwarn ("function definition declared `auto'");
- if (specbits & 1 << (int) RID_REGISTER)
- error ("function definition declared `register'");
- if (specbits & 1 << (int) RID_TYPEDEF)
- error ("function definition declared `typedef'");
- if (specbits & 1 << (int) RID_THREAD)
- error ("function definition declared `__thread'");
- specbits &= ~((1 << (int) RID_TYPEDEF) | (1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO) | (1 << (int) RID_THREAD));
- }
- else if (decl_context != NORMAL && nclasses > 0)
- {
- if (decl_context == PARM && specbits & 1 << (int) RID_REGISTER)
- ;
- else
- {
- switch (decl_context)
- {
- case FIELD:
- error ("storage class specified for structure field `%s'",
- name);
- break;
- case PARM:
- error ("storage class specified for parameter `%s'", name);
- break;
- default:
- error ("storage class specified for typename");
- break;
- }
- specbits &= ~((1 << (int) RID_TYPEDEF) | (1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO) | (1 << (int) RID_STATIC)
- | (1 << (int) RID_EXTERN) | (1 << (int) RID_THREAD));
- }
- }
- else if (specbits & 1 << (int) RID_EXTERN && initialized && ! funcdef_flag)
- {
- /* `extern' with initialization is invalid if not at file scope. */
- if (current_scope == file_scope)
- warning ("`%s' initialized and declared `extern'", name);
- else
- error ("`%s' has both `extern' and initializer", name);
- }
- else if (current_scope == file_scope)
- {
- if (specbits & 1 << (int) RID_AUTO)
- error ("file-scope declaration of `%s' specifies `auto'", name);
- }
- else
- {
- if (specbits & 1 << (int) RID_EXTERN && funcdef_flag)
- error ("nested function `%s' declared `extern'", name);
- else if ((specbits & (1 << (int) RID_THREAD
- | 1 << (int) RID_EXTERN
- | 1 << (int) RID_STATIC))
- == (1 << (int) RID_THREAD))
- {
- error ("function-scope `%s' implicitly auto and declared `__thread'",
- name);
- specbits &= ~(1 << (int) RID_THREAD);
- }
- }
- }
+ /* Warn about storage classes that are invalid for certain
+ kinds of declarations (parameters, typenames, etc.). */
+
+ if (funcdef_flag
+ && (threadp
+ || storage_class == csc_auto
+ || storage_class == csc_register
+ || storage_class == csc_typedef))
+ {
+ if (storage_class == csc_auto
+ && (pedantic || current_scope == file_scope))
+ pedwarn ("function definition declared %<auto%>");
+ if (storage_class == csc_register)
+ error ("function definition declared %<register%>");
+ if (storage_class == csc_typedef)
+ error ("function definition declared %<typedef%>");
+ if (threadp)
+ error ("function definition declared %<__thread%>");
+ threadp = false;
+ if (storage_class == csc_auto
+ || storage_class == csc_register
+ || storage_class == csc_typedef)
+ storage_class = csc_none;
+ }
+ else if (decl_context != NORMAL && (storage_class != csc_none || threadp))
+ {
+ if (decl_context == PARM && storage_class == csc_register)
+ ;
+ else
+ {
+ switch (decl_context)
+ {
+ case FIELD:
+ error ("storage class specified for structure field %qs",
+ name);
+ break;
+ case PARM:
+ error ("storage class specified for parameter %qs", name);
+ break;
+ default:
+ error ("storage class specified for typename");
+ break;
+ }
+ storage_class = csc_none;
+ threadp = false;
+ }
+ }
+ else if (storage_class == csc_extern
+ && initialized
+ && !funcdef_flag)
+ {
+ /* 'extern' with initialization is invalid if not at file scope. */
+ if (current_scope == file_scope)
+ warning ("%qs initialized and declared %<extern%>", name);
+ else
+ error ("%qs has both %<extern%> and initializer", name);
+ }
+ else if (current_scope == file_scope)
+ {
+ if (storage_class == csc_auto)
+ error ("file-scope declaration of %qs specifies %<auto%>", name);
+ if (pedantic && storage_class == csc_register)
+ pedwarn ("file-scope declaration of %qs specifies %<register%>", name);
+ }
+ else
+ {
+ if (storage_class == csc_extern && funcdef_flag)
+ error ("nested function %qs declared %<extern%>", name);
+ else if (threadp && storage_class == csc_none)
+ {
+ error ("function-scope %qs implicitly auto and declared "
+ "%<__thread%>",
+ name);
+ threadp = false;
+ }
+ }
/* Now figure out the structure of the declarator proper.
Descend through it, creating more complex types, until we reach
the declared identifier (or NULL_TREE, in an absolute declarator). */
- while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE)
+ while (declarator && declarator->kind != cdk_id)
{
if (type == error_mark_node)
{
- declarator = TREE_OPERAND (declarator, 0);
+ declarator = declarator->declarator;
continue;
}
- /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
- an INDIRECT_REF (for *...),
- a CALL_EXPR (for ...(...)),
- a TREE_LIST (for nested attributes),
- an identifier (for the name being declared)
- or a null pointer (for the place in an absolute declarator
+ /* Each level of DECLARATOR is either a cdk_array (for ...[..]),
+ a cdk_pointer (for *...),
+ a cdk_function (for ...(...)),
+ a cdk_attrs (for nested attributes),
+ or a cdk_id (for the name being declared
+ or the place in an absolute declarator
where the name was omitted).
- For the last two cases, we have just exited the loop.
+ For the last case, we have just exited the loop.
At this point, TYPE is the type of elements of an array,
or for a function to return, or for a pointer to point to.
array or function or pointer, and DECLARATOR has had its
outermost layer removed. */
- if (array_ptr_quals != NULL_TREE || array_parm_static)
+ if (array_ptr_quals != TYPE_UNQUALIFIED
+ || array_ptr_attrs != NULL_TREE
+ || array_parm_static)
{
/* Only the innermost declarator (making a parameter be of
array type which is converted to pointer type)
may have static or type qualifiers. */
error ("static or type qualifiers in non-parameter array declarator");
- array_ptr_quals = NULL_TREE;
+ array_ptr_quals = TYPE_UNQUALIFIED;
+ array_ptr_attrs = NULL_TREE;
array_parm_static = 0;
}
- if (TREE_CODE (declarator) == TREE_LIST)
+ switch (declarator->kind)
{
- /* We encode a declarator with embedded attributes using
- a TREE_LIST. */
- tree attrs = TREE_PURPOSE (declarator);
- tree inner_decl;
- int attr_flags = 0;
- declarator = TREE_VALUE (declarator);
- inner_decl = declarator;
- while (inner_decl != NULL_TREE
- && TREE_CODE (inner_decl) == TREE_LIST)
- inner_decl = TREE_VALUE (inner_decl);
- if (inner_decl == NULL_TREE
- || TREE_CODE (inner_decl) == IDENTIFIER_NODE)
- attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
- else if (TREE_CODE (inner_decl) == CALL_EXPR)
- attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
- else if (TREE_CODE (inner_decl) == ARRAY_REF)
- attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
- returned_attrs = decl_attributes (&type,
- chainon (returned_attrs, attrs),
- attr_flags);
- }
- else if (TREE_CODE (declarator) == ARRAY_REF)
- {
- tree itype = NULL_TREE;
- tree size = TREE_OPERAND (declarator, 1);
- /* The index is a signed object `sizetype' bits wide. */
- tree index_type = c_common_signed_type (sizetype);
-
- array_ptr_quals = TREE_TYPE (declarator);
- array_parm_static = TREE_STATIC (declarator);
-
- declarator = TREE_OPERAND (declarator, 0);
-
- /* Check for some types that there cannot be arrays of. */
-
- if (VOID_TYPE_P (type))
- {
- error ("declaration of `%s' as array of voids", name);
- type = error_mark_node;
- }
-
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("declaration of `%s' as array of functions", name);
+ case cdk_attrs:
+ {
+ /* A declarator with embedded attributes. */
+ tree attrs = declarator->u.attrs;
+ const struct c_declarator *inner_decl;
+ int attr_flags = 0;
+ declarator = declarator->declarator;
+ inner_decl = declarator;
+ while (inner_decl->kind == cdk_attrs)
+ inner_decl = inner_decl->declarator;
+ if (inner_decl->kind == cdk_id)
+ attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
+ else if (inner_decl->kind == cdk_function)
+ attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
+ else if (inner_decl->kind == cdk_array)
+ attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
+ returned_attrs = decl_attributes (&type,
+ chainon (returned_attrs, attrs),
+ attr_flags);
+ break;
+ }
+ case cdk_array:
+ {
+ tree itype = NULL_TREE;
+ tree size = declarator->u.array.dimen;
+ /* The index is a signed object `sizetype' bits wide. */
+ tree index_type = c_common_signed_type (sizetype);
+
+ array_ptr_quals = declarator->u.array.quals;
+ array_ptr_attrs = declarator->u.array.attrs;
+ array_parm_static = declarator->u.array.static_p;
+
+ declarator = declarator->declarator;
+
+ /* Check for some types that there cannot be arrays of. */
+
+ if (VOID_TYPE_P (type))
+ {
+ error ("declaration of %qs as array of voids", name);
+ type = error_mark_node;
+ }
+
+ if (TREE_CODE (type) == FUNCTION_TYPE)
+ {
+ error ("declaration of %qs as array of functions", name);
+ type = error_mark_node;
+ }
+
+ if (pedantic && !in_system_header && flexible_array_type_p (type))
+ pedwarn ("invalid use of structure with flexible array member");
+
+ if (size == error_mark_node)
type = error_mark_node;
- }
-
- if (pedantic && flexible_array_type_p (type))
- pedwarn ("invalid use of structure with flexible array member");
-
- if (size == error_mark_node)
- type = error_mark_node;
-
- if (type == error_mark_node)
- continue;
-
- /* If size was specified, set ITYPE to a range-type for that size.
- Otherwise, ITYPE remains null. finish_decl may figure it out
- from an initial value. */
-
- if (size)
- {
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- STRIP_TYPE_NOPS (size);
-
- if (! INTEGRAL_TYPE_P (TREE_TYPE (size)))
- {
- error ("size of array `%s' has non-integer type", name);
- size = integer_one_node;
- }
-
- if (pedantic && integer_zerop (size))
- pedwarn ("ISO C forbids zero-size array `%s'", name);
-
- if (TREE_CODE (size) == INTEGER_CST)
- {
- constant_expression_warning (size);
- if (tree_int_cst_sgn (size) < 0)
- {
- error ("size of array `%s' is negative", name);
- size = integer_one_node;
- }
- }
- else
- {
- /* Make sure the array size remains visibly nonconstant
- even if it is (eg) a const variable with known value. */
- size_varies = 1;
+
+ if (type == error_mark_node)
+ continue;
- if (!flag_isoc99 && pedantic)
- {
- if (TREE_CONSTANT (size))
- pedwarn ("ISO C90 forbids array `%s' whose size can't be evaluated",
- name);
- else
- pedwarn ("ISO C90 forbids variable-size array `%s'",
- name);
- }
- }
+ /* If size was specified, set ITYPE to a range-type for
+ that size. Otherwise, ITYPE remains null. finish_decl
+ may figure it out from an initial value. */
- if (integer_zerop (size))
- {
- /* A zero-length array cannot be represented with an
- unsigned index type, which is what we'll get with
- build_index_type. Create an open-ended range instead. */
- itype = build_range_type (sizetype, size, NULL_TREE);
- }
- else
- {
- /* Compute the maximum valid index, that is, size - 1.
- Do the calculation in index_type, so that if it is
- a variable the computations will be done in the
- proper mode. */
- itype = fold (build (MINUS_EXPR, index_type,
- convert (index_type, size),
- convert (index_type, size_one_node)));
-
- /* If that overflowed, the array is too big.
- ??? While a size of INT_MAX+1 technically shouldn't
- cause an overflow (because we subtract 1), the overflow
- is recorded during the conversion to index_type, before
- the subtraction. Handling this case seems like an
- unnecessary complication. */
- if (TREE_OVERFLOW (itype))
- {
- error ("size of array `%s' is too large", name);
- type = error_mark_node;
- continue;
- }
+ if (size)
+ {
+ /* Strip NON_LVALUE_EXPRs since we aren't using as an
+ lvalue. */
+ STRIP_TYPE_NOPS (size);
+
+ if (!INTEGRAL_TYPE_P (TREE_TYPE (size)))
+ {
+ error ("size of array %qs has non-integer type", name);
+ size = integer_one_node;
+ }
+
+ if (pedantic && integer_zerop (size))
+ pedwarn ("ISO C forbids zero-size array %qs", name);
+
+ if (TREE_CODE (size) == INTEGER_CST)
+ {
+ constant_expression_warning (size);
+ if (tree_int_cst_sgn (size) < 0)
+ {
+ error ("size of array %qs is negative", name);
+ size = integer_one_node;
+ }
+ }
+ else
+ {
+ /* Make sure the array size remains visibly
+ nonconstant even if it is (eg) a const variable
+ with known value. */
+ size_varies = 1;
+
+ if (!flag_isoc99 && pedantic)
+ {
+ if (TREE_CONSTANT (size))
+ pedwarn ("ISO C90 forbids array %qs whose size "
+ "can%'t be evaluated",
+ name);
+ else
+ pedwarn ("ISO C90 forbids variable-size array %qs",
+ name);
+ }
+ }
- if (size_varies)
- {
- /* We must be able to distinguish the
- SAVE_EXPR_CONTEXT for the variably-sized type
- so that we can set it correctly in
- set_save_expr_context. The convention is
- that all SAVE_EXPRs that need to be reset
- have NULL_TREE for their SAVE_EXPR_CONTEXT. */
- tree cfd = current_function_decl;
- if (decl_context == PARM)
- current_function_decl = NULL_TREE;
+ if (integer_zerop (size))
+ {
+ /* A zero-length array cannot be represented with
+ an unsigned index type, which is what we'll
+ get with build_index_type. Create an
+ open-ended range instead. */
+ itype = build_range_type (sizetype, size, NULL_TREE);
+ }
+ else
+ {
+ /* Compute the maximum valid index, that is, size
+ - 1. Do the calculation in index_type, so that
+ if it is a variable the computations will be
+ done in the proper mode. */
+ itype = fold (build2 (MINUS_EXPR, index_type,
+ convert (index_type, size),
+ convert (index_type,
+ size_one_node)));
+
+ /* If that overflowed, the array is too big. ???
+ While a size of INT_MAX+1 technically shouldn't
+ cause an overflow (because we subtract 1), the
+ overflow is recorded during the conversion to
+ index_type, before the subtraction. Handling
+ this case seems like an unnecessary
+ complication. */
+ if (TREE_OVERFLOW (itype))
+ {
+ error ("size of array %qs is too large", name);
+ type = error_mark_node;
+ continue;
+ }
+
+ if (size_varies)
itype = variable_size (itype);
- if (decl_context == PARM)
- current_function_decl = cfd;
- }
- itype = build_index_type (itype);
- }
- }
- else if (decl_context == FIELD)
- {
- if (pedantic && !flag_isoc99 && !in_system_header)
- pedwarn ("ISO C90 does not support flexible array members");
-
- /* ISO C99 Flexible array members are effectively identical
- to GCC's zero-length array extension. */
- itype = build_range_type (sizetype, size_zero_node, NULL_TREE);
- }
-
- /* If pedantic, complain about arrays of incomplete types. */
+ itype = build_index_type (itype);
+ }
+ }
+ else if (decl_context == FIELD)
+ {
+ if (pedantic && !flag_isoc99 && !in_system_header)
+ pedwarn ("ISO C90 does not support flexible array members");
- if (pedantic && !COMPLETE_TYPE_P (type))
- pedwarn ("array type has incomplete element type");
+ /* ISO C99 Flexible array members are effectively
+ identical to GCC's zero-length array extension. */
+ itype = build_range_type (sizetype, size_zero_node, NULL_TREE);
+ }
- /* Build the array type itself, then merge any constancy or
- volatility into the target type. We must do it in this order
- to ensure that the TYPE_MAIN_VARIANT field of the array type
- is set correctly. */
+ /* If pedantic, complain about arrays of incomplete types. */
+ if (pedantic && !COMPLETE_TYPE_P (type))
+ pedwarn ("array type has incomplete element type");
- type = build_array_type (type, itype);
- if (type_quals)
- type = c_build_qualified_type (type, type_quals);
+ /* Build the array type itself, then merge any constancy
+ or volatility into the target type. We must do it in
+ this order to ensure that the TYPE_MAIN_VARIANT field
+ of the array type is set correctly. */
+ type = build_array_type (type, itype);
+ if (type_quals)
+ type = c_build_qualified_type (type, type_quals);
- if (size_varies)
- C_TYPE_VARIABLE_SIZE (type) = 1;
+ if (size_varies)
+ C_TYPE_VARIABLE_SIZE (type) = 1;
- /* The GCC extension for zero-length arrays differs from
- ISO flexible array members in that sizeof yields zero. */
- if (size && integer_zerop (size))
- {
+ /* The GCC extension for zero-length arrays differs from
+ ISO flexible array members in that sizeof yields
+ zero. */
+ if (size && integer_zerop (size))
+ {
+ layout_type (type);
+ TYPE_SIZE (type) = bitsize_zero_node;
+ TYPE_SIZE_UNIT (type) = size_zero_node;
+ }
+ else if (declarator->kind == cdk_pointer)
+ /* We can never complete an array type which is the
+ target of a pointer, so go ahead and lay it out. */
layout_type (type);
- TYPE_SIZE (type) = bitsize_zero_node;
- TYPE_SIZE_UNIT (type) = size_zero_node;
- }
- else if (declarator && TREE_CODE (declarator) == INDIRECT_REF)
- /* We can never complete an array type which is the target of a
- pointer, so go ahead and lay it out. */
- layout_type (type);
-
- if (decl_context != PARM
- && (array_ptr_quals != NULL_TREE || array_parm_static))
- {
- error ("static or type qualifiers in non-parameter array declarator");
- array_ptr_quals = NULL_TREE;
- array_parm_static = 0;
- }
- }
- else if (TREE_CODE (declarator) == CALL_EXPR)
- {
- /* Say it's a definition only for the CALL_EXPR closest to
- the identifier. */
- bool really_funcdef = (funcdef_flag
- && (TREE_CODE (TREE_OPERAND (declarator, 0))
- == IDENTIFIER_NODE));
- tree arg_types;
-
- /* Declaring a function type.
- Make sure we have a valid type for the function to return. */
- if (type == error_mark_node)
- continue;
- size_varies = 0;
+ if (decl_context != PARM
+ && (array_ptr_quals != TYPE_UNQUALIFIED
+ || array_ptr_attrs != NULL_TREE
+ || array_parm_static))
+ {
+ error ("static or type qualifiers in non-parameter array declarator");
+ array_ptr_quals = TYPE_UNQUALIFIED;
+ array_ptr_attrs = NULL_TREE;
+ array_parm_static = 0;
+ }
+ break;
+ }
+ case cdk_function:
+ {
+ /* Say it's a definition only for the declarator closest
+ to the identifier, apart possibly from some
+ attributes. */
+ bool really_funcdef = false;
+ tree arg_types;
+ if (funcdef_flag)
+ {
+ const struct c_declarator *t = declarator->declarator;
+ while (t->kind == cdk_attrs)
+ t = t->declarator;
+ really_funcdef = (t->kind == cdk_id);
+ }
- /* Warn about some types functions can't return. */
+ /* Declaring a function type. Make sure we have a valid
+ type for the function to return. */
+ if (type == error_mark_node)
+ continue;
+
+ size_varies = 0;
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("`%s' declared as function returning a function", name);
- type = integer_type_node;
- }
- if (TREE_CODE (type) == ARRAY_TYPE)
- {
- error ("`%s' declared as function returning an array", name);
- type = integer_type_node;
- }
+ /* Warn about some types functions can't return. */
+ if (TREE_CODE (type) == FUNCTION_TYPE)
+ {
+ error ("%qs declared as function returning a function", name);
+ type = integer_type_node;
+ }
+ if (TREE_CODE (type) == ARRAY_TYPE)
+ {
+ error ("%qs declared as function returning an array", name);
+ type = integer_type_node;
+ }
- /* Construct the function type and go to the next
- inner layer of declarator. */
- arg_info = TREE_OPERAND (declarator, 1);
- arg_types = grokparms (arg_info, really_funcdef);
+ /* Construct the function type and go to the next
+ inner layer of declarator. */
+ arg_info = declarator->u.arg_info;
+ arg_types = grokparms (arg_info, really_funcdef);
- /* Type qualifiers before the return type of the function
- qualify the return type, not the function type. */
- if (type_quals)
+ /* Type qualifiers before the return type of the function
+ qualify the return type, not the function type. */
+ if (type_quals)
+ {
+ /* Type qualifiers on a function return type are
+ normally permitted by the standard but have no
+ effect, so give a warning at -Wreturn-type.
+ Qualifiers on a void return type are banned on
+ function definitions in ISO C; GCC used to used
+ them for noreturn functions. */
+ if (VOID_TYPE_P (type) && really_funcdef)
+ pedwarn ("function definition has qualified void return type");
+ else if (warn_return_type)
+ warning ("type qualifiers ignored on function return type");
+
+ type = c_build_qualified_type (type, type_quals);
+ }
+ type_quals = TYPE_UNQUALIFIED;
+
+ type = build_function_type (type, arg_types);
+ declarator = declarator->declarator;
+
+ /* Set the TYPE_CONTEXTs for each tagged type which is local to
+ the formal parameter list of this FUNCTION_TYPE to point to
+ the FUNCTION_TYPE node itself. */
{
- /* Type qualifiers on a function return type are normally
- permitted by the standard but have no effect, so give a
- warning at -Wextra. Qualifiers on a void return type have
- meaning as a GNU extension, and are banned on function
- definitions in ISO C. FIXME: strictly we shouldn't
- pedwarn for qualified void return types except on function
- definitions, but not doing so could lead to the undesirable
- state of a "volatile void" function return type not being
- warned about, and a use of the function being compiled
- with GNU semantics, with no diagnostics under -pedantic. */
- if (VOID_TYPE_P (type) && pedantic && !in_system_header)
- pedwarn ("ISO C forbids qualified void function return type");
- else if (extra_warnings
- && !(VOID_TYPE_P (type)
- && type_quals == TYPE_QUAL_VOLATILE))
- warning ("type qualifiers ignored on function return type");
-
- type = c_build_qualified_type (type, type_quals);
+ tree link;
+
+ for (link = arg_info->tags;
+ link;
+ link = TREE_CHAIN (link))
+ TYPE_CONTEXT (TREE_VALUE (link)) = type;
}
- type_quals = TYPE_UNQUALIFIED;
-
- type = build_function_type (type, arg_types);
- declarator = TREE_OPERAND (declarator, 0);
-
- /* Set the TYPE_CONTEXTs for each tagged type which is local to
- the formal parameter list of this FUNCTION_TYPE to point to
- the FUNCTION_TYPE node itself. */
-
- {
- tree link;
-
- for (link = ARG_INFO_TAGS (arg_info);
- link;
- link = TREE_CHAIN (link))
- TYPE_CONTEXT (TREE_VALUE (link)) = type;
+ break;
}
- }
- else if (TREE_CODE (declarator) == INDIRECT_REF)
- {
- /* Merge any constancy or volatility into the target type
- for the pointer. */
-
- if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
- && type_quals)
- pedwarn ("ISO C forbids qualified function types");
- if (type_quals)
- type = c_build_qualified_type (type, type_quals);
- type_quals = TYPE_UNQUALIFIED;
- size_varies = 0;
-
- type = build_pointer_type (type);
-
- /* Process a list of type modifier keywords
- (such as const or volatile) that were given inside the `*'. */
-
- if (TREE_TYPE (declarator))
- {
- tree typemodlist;
- int erred = 0;
-
- constp = 0;
- volatilep = 0;
- restrictp = 0;
- for (typemodlist = TREE_TYPE (declarator); typemodlist;
- typemodlist = TREE_CHAIN (typemodlist))
- {
- tree qualifier = TREE_VALUE (typemodlist);
-
- if (C_IS_RESERVED_WORD (qualifier))
- {
- if (C_RID_CODE (qualifier) == RID_CONST)
- constp++;
- else if (C_RID_CODE (qualifier) == RID_VOLATILE)
- volatilep++;
- else if (C_RID_CODE (qualifier) == RID_RESTRICT)
- restrictp++;
- else
- erred++;
- }
- else
- erred++;
- }
+ case cdk_pointer:
+ {
+ /* Merge any constancy or volatility into the target type
+ for the pointer. */
- if (erred)
- error ("invalid type modifier within pointer declarator");
- if (pedantic && !flag_isoc99)
- {
- if (constp > 1)
- pedwarn ("duplicate `const'");
- if (volatilep > 1)
- pedwarn ("duplicate `volatile'");
- if (restrictp > 1)
- pedwarn ("duplicate `restrict'");
- }
+ if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
+ && type_quals)
+ pedwarn ("ISO C forbids qualified function types");
+ if (type_quals)
+ type = c_build_qualified_type (type, type_quals);
+ size_varies = 0;
- type_quals = ((constp ? TYPE_QUAL_CONST : 0)
- | (restrictp ? TYPE_QUAL_RESTRICT : 0)
- | (volatilep ? TYPE_QUAL_VOLATILE : 0));
- }
+ type = build_pointer_type (type);
+
+ /* Process type qualifiers (such as const or volatile)
+ that were given inside the `*'. */
+ type_quals = declarator->u.pointer_quals;
- declarator = TREE_OPERAND (declarator, 0);
+ declarator = declarator->declarator;
+ break;
+ }
+ default:
+ gcc_unreachable ();
}
- else
- abort ();
-
}
/* Now TYPE has the actual type. */
&& COMPLETE_TYPE_P (type)
&& TREE_OVERFLOW (TYPE_SIZE (type)))
{
- error ("size of array `%s' is too large", name);
+ error ("size of array %qs is too large", name);
/* If we proceed with the array type as it is, we'll eventually
crash in tree_low_cst(). */
type = error_mark_node;
/* If this is declaring a typedef name, return a TYPE_DECL. */
- if (specbits & (1 << (int) RID_TYPEDEF))
+ if (storage_class == csc_typedef)
{
tree decl;
- /* Note that the grammar rejects storage classes
- in typenames, fields or parameters */
if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
&& type_quals)
pedwarn ("ISO C forbids qualified function types");
if (type_quals)
type = c_build_qualified_type (type, type_quals);
- decl = build_decl (TYPE_DECL, declarator, type);
- if ((specbits & (1 << (int) RID_SIGNED))
- || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
+ decl = build_decl (TYPE_DECL, declarator->u.id, type);
+ if (declspecs->explicit_signed_p)
C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
decl_attributes (&decl, returned_attrs, 0);
+ if (declspecs->inline_p)
+ pedwarn ("%Jtypedef %qD declared %<inline%>", decl, decl);
return decl;
}
if (decl_context == TYPENAME)
{
- /* Note that the grammar rejects storage classes
- in typenames, fields or parameters */
+ /* Note that the grammar rejects storage classes in typenames
+ and fields. */
+ gcc_assert (storage_class == csc_none && !threadp
+ && !declspecs->inline_p);
if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
&& type_quals)
pedwarn ("ISO C forbids const or volatile function types");
a better error message can be made later. */
if (VOID_TYPE_P (type) && decl_context != PARM
- && ! ((decl_context != FIELD && TREE_CODE (type) != FUNCTION_TYPE)
- && ((specbits & (1 << (int) RID_EXTERN))
+ && !((decl_context != FIELD && TREE_CODE (type) != FUNCTION_TYPE)
+ && (storage_class == csc_extern
|| (current_scope == file_scope
- && !(specbits
- & ((1 << (int) RID_STATIC) | (1 << (int) RID_REGISTER)))))))
+ && !(storage_class == csc_static
+ || storage_class == csc_register)))))
{
- error ("variable or field `%s' declared void", name);
+ error ("variable or field %qs declared void", name);
type = integer_type_node;
}
if (type_quals)
type = c_build_qualified_type (type, type_quals);
type = build_pointer_type (type);
- type_quals = TYPE_UNQUALIFIED;
- if (array_ptr_quals)
- {
- tree new_ptr_quals, new_ptr_attrs;
- int erred = 0;
- split_specs_attrs (array_ptr_quals, &new_ptr_quals, &new_ptr_attrs);
- /* We don't yet implement attributes in this context. */
- if (new_ptr_attrs != NULL_TREE)
- warning ("attributes in parameter array declarator ignored");
-
- constp = 0;
- volatilep = 0;
- restrictp = 0;
- for (; new_ptr_quals; new_ptr_quals = TREE_CHAIN (new_ptr_quals))
- {
- tree qualifier = TREE_VALUE (new_ptr_quals);
-
- if (C_IS_RESERVED_WORD (qualifier))
- {
- if (C_RID_CODE (qualifier) == RID_CONST)
- constp++;
- else if (C_RID_CODE (qualifier) == RID_VOLATILE)
- volatilep++;
- else if (C_RID_CODE (qualifier) == RID_RESTRICT)
- restrictp++;
- else
- erred++;
- }
- else
- erred++;
- }
+ type_quals = array_ptr_quals;
- if (erred)
- error ("invalid type modifier within array declarator");
+ /* We don't yet implement attributes in this context. */
+ if (array_ptr_attrs != NULL_TREE)
+ warning ("attributes in parameter array declarator ignored");
- type_quals = ((constp ? TYPE_QUAL_CONST : 0)
- | (restrictp ? TYPE_QUAL_RESTRICT : 0)
- | (volatilep ? TYPE_QUAL_VOLATILE : 0));
- }
size_varies = 0;
}
else if (TREE_CODE (type) == FUNCTION_TYPE)
type_as_written = type;
- decl = build_decl (PARM_DECL, declarator, type);
+ decl = build_decl (PARM_DECL, declarator->u.id, type);
if (size_varies)
C_DECL_VARIABLE_SIZE (decl) = 1;
DECL_ARG_TYPE (decl) = promoted_type;
DECL_ARG_TYPE_AS_WRITTEN (decl) = type_as_written;
+ if (declspecs->inline_p)
+ pedwarn ("%Jparameter %qD declared %<inline%>", decl, decl);
}
else if (decl_context == FIELD)
{
+ /* Note that the grammar rejects storage classes in typenames
+ and fields. */
+ gcc_assert (storage_class == csc_none && !threadp
+ && !declspecs->inline_p);
+
/* Structure field. It may not be a function. */
if (TREE_CODE (type) == FUNCTION_TYPE)
{
- error ("field `%s' declared as a function", name);
+ error ("field %qs declared as a function", name);
type = build_pointer_type (type);
}
else if (TREE_CODE (type) != ERROR_MARK
&& !COMPLETE_OR_UNBOUND_ARRAY_TYPE_P (type))
{
- error ("field `%s' has incomplete type", name);
+ error ("field %qs has incomplete type", name);
type = error_mark_node;
}
/* Move type qualifiers down to element of an array. */
type = build_array_type (c_build_qualified_type (TREE_TYPE (type),
type_quals),
TYPE_DOMAIN (type));
- decl = build_decl (FIELD_DECL, declarator, type);
+ decl = build_decl (FIELD_DECL, declarator->u.id, type);
DECL_NONADDRESSABLE_P (decl) = bitfield;
if (size_varies)
}
else if (TREE_CODE (type) == FUNCTION_TYPE)
{
- /* Every function declaration is "external"
- except for those which are inside a function body
- in which `auto' is used.
- That is a case not specified by ANSI C,
- and we use it for forward declarations for nested functions. */
- int extern_ref = (!(specbits & (1 << (int) RID_AUTO))
- || current_scope == file_scope);
-
- if (specbits & (1 << (int) RID_AUTO)
- && (pedantic || current_scope == file_scope))
- pedwarn ("invalid storage class for function `%s'", name);
- if (specbits & (1 << (int) RID_REGISTER))
- error ("invalid storage class for function `%s'", name);
- if (specbits & (1 << (int) RID_THREAD))
- error ("invalid storage class for function `%s'", name);
- /* Function declaration not at file scope.
- Storage classes other than `extern' are not allowed
- and `extern' makes no difference. */
- if (current_scope != file_scope
- && (specbits & ((1 << (int) RID_STATIC) | (1 << (int) RID_INLINE)))
- && pedantic)
- pedwarn ("invalid storage class for function `%s'", name);
-
- decl = build_decl (FUNCTION_DECL, declarator, type);
+ if (storage_class == csc_register || threadp)
+ error ("invalid storage class for function %qs", name);
+ else if (current_scope != file_scope)
+ {
+ /* Function declaration not at file scope. Storage
+ classes other than `extern' are not allowed, C99
+ 6.7.1p5, and `extern' makes no difference. However,
+ GCC allows 'auto', perhaps with 'inline', to support
+ nested functions. */
+ if (storage_class == csc_auto)
+ {
+ if (pedantic)
+ pedwarn ("invalid storage class for function %qs", name);
+ }
+ if (storage_class == csc_static)
+ error ("invalid storage class for function %qs", name);
+ }
+
+ decl = build_decl (FUNCTION_DECL, declarator->u.id, type);
decl = build_decl_attribute_variant (decl, decl_attr);
- DECL_LANG_SPECIFIC (decl)
- = ggc_alloc_cleared (sizeof (struct lang_decl));
+ DECL_LANG_SPECIFIC (decl) = GGC_CNEW (struct lang_decl);
- if (pedantic && type_quals && ! DECL_IN_SYSTEM_HEADER (decl))
+ if (pedantic && type_quals && !DECL_IN_SYSTEM_HEADER (decl))
pedwarn ("ISO C forbids qualified function types");
- /* GNU C interprets a `volatile void' return type to indicate
+ /* GNU C interprets a volatile-qualified function type to indicate
that the function does not return. */
if ((type_quals & TYPE_QUAL_VOLATILE)
&& !VOID_TYPE_P (TREE_TYPE (TREE_TYPE (decl))))
- warning ("`noreturn' function returns non-void value");
-
- if (extern_ref)
+ warning ("%<noreturn%> function returns non-void value");
+
+ /* Every function declaration is an external reference
+ (DECL_EXTERNAL) except for those which are not at file
+ scope and are explicitly declared "auto". This is
+ forbidden by standard C (C99 6.7.1p5) and is interpreted by
+ GCC to signify a forward declaration of a nested function. */
+ if (storage_class == csc_auto && current_scope != file_scope)
+ DECL_EXTERNAL (decl) = 0;
+ else
DECL_EXTERNAL (decl) = 1;
+
/* Record absence of global scope for `static' or `auto'. */
TREE_PUBLIC (decl)
- = !(specbits & ((1 << (int) RID_STATIC) | (1 << (int) RID_AUTO)));
+ = !(storage_class == csc_static || storage_class == csc_auto);
/* For a function definition, record the argument information
- block in DECL_ARGUMENTS where store_parm_decls will look
- for it. */
+ block where store_parm_decls will look for it. */
if (funcdef_flag)
- DECL_ARGUMENTS (decl) = arg_info;
+ current_function_arg_info = arg_info;
- if (defaulted_int)
+ if (declspecs->default_int_p)
C_FUNCTION_IMPLICIT_INT (decl) = 1;
/* Record presence of `inline', if it is reasonable. */
- if (MAIN_NAME_P (declarator))
+ if (flag_hosted && MAIN_NAME_P (declarator->u.id))
{
- if (inlinep)
- warning ("cannot inline function `main'");
+ if (declspecs->inline_p)
+ pedwarn ("cannot inline function %<main%>");
}
- else if (inlinep)
+ else if (declspecs->inline_p)
{
/* Record that the function is declared `inline'. */
DECL_DECLARED_INLINE_P (decl) = 1;
if (initialized)
{
DECL_INLINE (decl) = 1;
- if (specbits & (1 << (int) RID_EXTERN))
+ if (storage_class == csc_extern)
current_extern_inline = 1;
}
}
{
/* It's a variable. */
/* An uninitialized decl with `extern' is a reference. */
- int extern_ref = !initialized && (specbits & (1 << (int) RID_EXTERN));
+ int extern_ref = !initialized && storage_class == csc_extern;
/* Move type qualifiers down to element of an array. */
if (TREE_CODE (type) == ARRAY_TYPE && type_quals)
the 'extern' declaration is taken to refer to that decl.) */
if (extern_ref && current_scope != file_scope)
{
- tree global_decl = identifier_global_value (declarator);
- tree visible_decl = lookup_name (declarator);
+ tree global_decl = identifier_global_value (declarator->u.id);
+ tree visible_decl = lookup_name (declarator->u.id);
if (global_decl
&& global_decl != visible_decl
&& TREE_CODE (global_decl) == VAR_DECL
&& !TREE_PUBLIC (global_decl))
- error ("variable previously declared 'static' redeclared "
- "'extern'");
+ error ("variable previously declared %<static%> redeclared "
+ "%<extern%>");
}
- decl = build_decl (VAR_DECL, declarator, type);
+ decl = build_decl (VAR_DECL, declarator->u.id, type);
if (size_varies)
C_DECL_VARIABLE_SIZE (decl) = 1;
- if (inlinep)
- pedwarn ("%Jvariable '%D' declared `inline'", decl, decl);
+ if (declspecs->inline_p)
+ pedwarn ("%Jvariable %qD declared %<inline%>", decl, decl);
- DECL_EXTERNAL (decl) = extern_ref;
+ /* At file scope, an initialized extern declaration may follow
+ a static declaration. In that case, DECL_EXTERNAL will be
+ reset later in start_decl. */
+ DECL_EXTERNAL (decl) = (storage_class == csc_extern);
/* At file scope, the presence of a `static' or `register' storage
class specifier, or the absence of all storage class specifiers
the absence of both `static' and `register' makes it public. */
if (current_scope == file_scope)
{
- TREE_PUBLIC (decl) = !(specbits & ((1 << (int) RID_STATIC)
- | (1 << (int) RID_REGISTER)));
+ TREE_PUBLIC (decl) = !(storage_class == csc_static
+ || storage_class == csc_register);
TREE_STATIC (decl) = !extern_ref;
}
/* Not at file scope, only `static' makes a static definition. */
else
{
- TREE_STATIC (decl) = (specbits & (1 << (int) RID_STATIC)) != 0;
+ TREE_STATIC (decl) = (storage_class == csc_static);
TREE_PUBLIC (decl) = extern_ref;
}
- if (specbits & 1 << (int) RID_THREAD)
+ if (threadp)
{
if (targetm.have_tls)
DECL_THREAD_LOCAL (decl) = 1;
/* Record `register' declaration for warnings on &
and in case doing stupid register allocation. */
- if (specbits & (1 << (int) RID_REGISTER))
+ if (storage_class == csc_register)
{
C_DECL_REGISTER (decl) = 1;
DECL_REGISTER (decl) = 1;
C_DECL_REGISTER (decl) = was_reg;
}
-#ifdef ENABLE_CHECKING
/* This is the earliest point at which we might know the assembler
name of a variable. Thus, if it's known before this, die horribly. */
- if (DECL_ASSEMBLER_NAME_SET_P (decl))
- abort ();
-#endif
+ gcc_assert (!DECL_ASSEMBLER_NAME_SET_P (decl));
decl_attributes (&decl, returned_attrs, 0);
Return a list of arg types to use in the FUNCTION_TYPE for this function.
- FUNCDEF_FLAG is nonzero for a function definition, 0 for
+ FUNCDEF_FLAG is true for a function definition, false for
a mere declaration. A nonempty identifier-list gets an error message
- when FUNCDEF_FLAG is zero. */
+ when FUNCDEF_FLAG is false. */
static tree
-grokparms (tree arg_info, int funcdef_flag)
+grokparms (struct c_arg_info *arg_info, bool funcdef_flag)
{
- tree arg_types = ARG_INFO_TYPES (arg_info);
+ tree arg_types = arg_info->types;
if (warn_strict_prototypes && arg_types == 0 && !funcdef_flag
&& !in_system_header)
- warning ("function declaration isn't a prototype");
+ warning ("function declaration isn%'t a prototype");
if (arg_types == error_mark_node)
return 0; /* don't set TYPE_ARG_TYPES in this case */
else if (arg_types && TREE_CODE (TREE_VALUE (arg_types)) == IDENTIFIER_NODE)
{
- if (! funcdef_flag)
+ if (!funcdef_flag)
pedwarn ("parameter names (without types) in function declaration");
- ARG_INFO_PARMS (arg_info) = ARG_INFO_TYPES (arg_info);
- ARG_INFO_TYPES (arg_info) = 0;
+ arg_info->parms = arg_info->types;
+ arg_info->types = 0;
return 0;
}
else
tree parm, type, typelt;
unsigned int parmno;
- /* If the arg types are incomplete in a declaration, they must
- include undefined tags. These tags can never be defined in
- the scope of the declaration, so the types can never be
- completed, and no call can be compiled successfully. */
+ /* If there is a parameter of incomplete type in a definition,
+ this is an error. In a declaration this is valid, and a
+ struct or union type may be completed later, before any calls
+ or definition of the function. In the case where the tag was
+ first declared within the parameter list, a warning has
+ already been given. If a parameter has void type, then
+ however the function cannot be defined or called, so
+ warn. */
- for (parm = ARG_INFO_PARMS (arg_info), typelt = arg_types, parmno = 1;
+ for (parm = arg_info->parms, typelt = arg_types, parmno = 1;
parm;
parm = TREE_CHAIN (parm), typelt = TREE_CHAIN (typelt), parmno++)
{
if (funcdef_flag)
{
if (DECL_NAME (parm))
- error ("%Jparameter %u ('%D') has incomplete type",
+ error ("%Jparameter %u (%qD) has incomplete type",
parm, parmno, parm);
else
error ("%Jparameter %u has incomplete type",
TREE_VALUE (typelt) = error_mark_node;
TREE_TYPE (parm) = error_mark_node;
}
- else
+ else if (VOID_TYPE_P (type))
{
if (DECL_NAME (parm))
- warning ("%Jparameter %u ('%D') has incomplete type",
+ warning ("%Jparameter %u (%qD) has void type",
parm, parmno, parm);
else
- warning ("%Jparameter %u has incomplete type",
+ warning ("%Jparameter %u has void type",
parm, parmno);
}
}
}
}
-/* Take apart the current scope and return a tree_list node with info
- on a parameter list just parsed. This tree_list node should be
- examined using the ARG_INFO_* macros, defined above:
+/* Take apart the current scope and return a c_arg_info structure with
+ info on a parameter list just parsed.
- ARG_INFO_PARMS: a list of parameter decls.
- ARG_INFO_TAGS: a list of structure, union and enum tags defined.
- ARG_INFO_TYPES: a list of argument types to go in the FUNCTION_TYPE.
- ARG_INFO_OTHERS: a list of non-parameter decls (notably enumeration
- constants) defined with the parameters.
-
- This tree_list node is later fed to 'grokparms' and 'store_parm_decls'.
+ This structure is later fed to 'grokparms' and 'store_parm_decls'.
ELLIPSIS being true means the argument list ended in '...' so don't
append a sentinel (void_list_node) to the end of the type-list. */
-tree
+struct c_arg_info *
get_parm_info (bool ellipsis)
{
struct c_binding *b = current_scope->bindings;
- tree arg_info = make_node (TREE_LIST);
+ struct c_arg_info *arg_info = XOBNEW (&parser_obstack,
+ struct c_arg_info);
tree parms = 0;
tree tags = 0;
tree types = 0;
static bool explained_incomplete_types = false;
bool gave_void_only_once_err = false;
+ arg_info->parms = 0;
+ arg_info->tags = 0;
+ arg_info->types = 0;
+ arg_info->others = 0;
+
/* The bindings in this scope must not get put into a block.
We will take care of deleting the binding nodes. */
current_scope->bindings = 0;
/* This function is only called if there was *something* on the
parameter list. */
-#ifdef ENABLE_CHECKING
- if (b == 0)
- abort ();
-#endif
+ gcc_assert (b);
/* A parameter list consisting solely of 'void' indicates that the
function takes no arguments. But if the 'void' is qualified
if (TREE_THIS_VOLATILE (b->decl)
|| TREE_READONLY (b->decl)
|| C_DECL_REGISTER (b->decl))
- error ("'void' as only parameter may not be qualified");
+ error ("%<void%> as only parameter may not be qualified");
/* There cannot be an ellipsis. */
if (ellipsis)
- error ("'void' must be the only parameter");
+ error ("%<void%> must be the only parameter");
- ARG_INFO_TYPES (arg_info) = void_list_node;
+ arg_info->types = void_list_node;
return arg_info;
}
case PARM_DECL:
if (b->id)
{
-#ifdef ENABLE_CHECKING
- if (I_SYMBOL_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_SYMBOL_BINDING (b->id) == b);
I_SYMBOL_BINDING (b->id) = b->shadowed;
}
/* Check for forward decls that never got their actual decl. */
if (TREE_ASM_WRITTEN (decl))
- error ("%Jparameter '%D' has just a forward declaration",
+ error ("%Jparameter %qD has just a forward declaration",
decl, decl);
/* Check for (..., void, ...) and issue an error. */
else if (VOID_TYPE_P (type) && !DECL_NAME (decl))
{
if (!gave_void_only_once_err)
{
- error ("'void' must be the only parameter");
+ error ("%<void%> must be the only parameter");
gave_void_only_once_err = true;
}
}
appears in the bindings list with b->id NULL. */
if (b->id)
{
-#ifdef ENABLE_CHECKING
- if (I_TAG_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_TAG_BINDING (b->id) == b);
I_TAG_BINDING (b->id) = b->shadowed;
}
{
if (b->id)
/* The %s will be one of 'struct', 'union', or 'enum'. */
- warning ("'%s %E' declared inside parameter list",
+ warning ("%<%s %E%> declared inside parameter list",
keyword, b->id);
else
/* The %s will be one of 'struct', 'union', or 'enum'. */
warning ("anonymous %s declared inside parameter list",
keyword);
-
- if (! explained_incomplete_types)
+
+ if (!explained_incomplete_types)
{
warning ("its scope is only this definition or declaration,"
" which is probably not what you want");
variable. Just throw it away. */
if (b->id)
{
-#ifdef ENABLE_CHECKING
- if (I_SYMBOL_BINDING (b->id) != b) abort ();
-#endif
+ gcc_assert (I_SYMBOL_BINDING (b->id) == b);
I_SYMBOL_BINDING (b->id) = b->shadowed;
}
break;
case FUNCTION_DECL:
case VAR_DECL:
default:
- abort ();
+ gcc_unreachable ();
}
b = free_binding_and_advance (b);
}
- ARG_INFO_PARMS (arg_info) = parms;
- ARG_INFO_TAGS (arg_info) = tags;
- ARG_INFO_TYPES (arg_info) = types;
- ARG_INFO_OTHERS (arg_info) = others;
+ arg_info->parms = parms;
+ arg_info->tags = tags;
+ arg_info->types = types;
+ arg_info->others = others;
return arg_info;
}
\f
ref = lookup_tag (code, name, 1);
if (ref && TREE_CODE (ref) == code)
{
- if (TYPE_FIELDS (ref))
+ if (TYPE_SIZE (ref))
{
if (code == UNION_TYPE)
- error ("redefinition of `union %s'", IDENTIFIER_POINTER (name));
+ error ("redefinition of %<union %s%>", IDENTIFIER_POINTER (name));
else
- error ("redefinition of `struct %s'", IDENTIFIER_POINTER (name));
+ error ("redefinition of %<struct %s%>", IDENTIFIER_POINTER (name));
+ }
+ else if (C_TYPE_BEING_DEFINED (ref))
+ {
+ if (code == UNION_TYPE)
+ error ("nested redefinition of %<union %s%>",
+ IDENTIFIER_POINTER (name));
+ else
+ error ("nested redefinition of %<struct %s%>",
+ IDENTIFIER_POINTER (name));
}
}
else
return ref;
}
-/* Process the specs, declarator (NULL if omitted) and width (NULL if omitted)
+/* Process the specs, declarator and width (NULL if omitted)
of a structure component, returning a FIELD_DECL node.
WIDTH is non-NULL for bit-fields only, and is an INTEGER_CST node.
are ultimately passed to `build_struct' to make the RECORD_TYPE node. */
tree
-grokfield (tree declarator, tree declspecs, tree width)
+grokfield (struct c_declarator *declarator, struct c_declspecs *declspecs,
+ tree width)
{
tree value;
- if (declarator == NULL_TREE && width == NULL_TREE)
+ if (declarator->kind == cdk_id && declarator->u.id == NULL_TREE
+ && width == NULL_TREE)
{
/* This is an unnamed decl.
took this from Plan 9 or if it was an accident of implementation
that took root before someone noticed the bug... */
- tree type = TREE_VALUE (declspecs);
+ tree type = declspecs->type;
+ bool type_ok = (TREE_CODE (type) == RECORD_TYPE
+ || TREE_CODE (type) == UNION_TYPE);
+ bool ok = false;
- if (flag_ms_extensions && TREE_CODE (type) == TYPE_DECL)
- type = TREE_TYPE (type);
- if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE)
+ if (type_ok
+ && (flag_ms_extensions || !declspecs->typedef_p))
{
if (flag_ms_extensions)
- ; /* ok */
+ ok = true;
else if (flag_iso)
- goto warn_unnamed_field;
+ ok = false;
else if (TYPE_NAME (type) == NULL)
- ; /* ok */
+ ok = true;
else
- goto warn_unnamed_field;
+ ok = false;
}
- else
+ if (!ok)
{
- warn_unnamed_field:
- warning ("declaration does not declare anything");
+ pedwarn ("declaration does not declare anything");
return NULL_TREE;
}
+ if (pedantic)
+ pedwarn ("ISO C doesn't support unnamed structs/unions");
}
- value = grokdeclarator (declarator, declspecs, FIELD, 0,
+ value = grokdeclarator (declarator, declspecs, FIELD, false,
width ? &width : NULL);
finish_decl (value, NULL_TREE, NULL_TREE);
for (y = fieldlist; y != x; y = TREE_CHAIN (y))
if (DECL_NAME (y) == DECL_NAME (x))
{
- error ("%Jduplicate member '%D'", x, x);
+ error ("%Jduplicate member %qD", x, x);
DECL_NAME (x) = NULL_TREE;
}
}
slot = htab_find_slot (htab, y, INSERT);
if (*slot)
{
- error ("%Jduplicate member '%D'", x, x);
+ error ("%Jduplicate member %qD", x, x);
DECL_NAME (x) = NULL_TREE;
}
*slot = y;
}
/* Install struct as DECL_CONTEXT of each field decl.
- Also process specified field sizes,m which is found in the DECL_INITIAL.
- Store 0 there, except for ": 0" fields (so we can find them
- and delete them, below). */
+ Also process specified field sizes, found in the DECL_INITIAL,
+ storing 0 there after the type has been changed to precision equal
+ to its width, rather than the precision of the specified standard
+ type. (Correct layout requires the original type to have been preserved
+ until now.) */
saw_named_field = 0;
for (x = fieldlist; x; x = TREE_CHAIN (x))
if (C_DECL_VARIABLE_SIZE (x))
C_TYPE_VARIABLE_SIZE (t) = 1;
- /* Detect invalid nested redefinition. */
- if (TREE_TYPE (x) == t)
- error ("nested redefinition of `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (t)));
-
if (DECL_INITIAL (x))
{
unsigned HOST_WIDE_INT width = tree_low_cst (DECL_INITIAL (x), 1);
SET_DECL_C_BIT_FIELD (x);
}
- DECL_INITIAL (x) = 0;
-
/* Detect flexible array member in an invalid context. */
if (TREE_CODE (TREE_TYPE (x)) == ARRAY_TYPE
&& TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
error ("%Jflexible array member not at end of struct", x);
TREE_TYPE (x) = error_mark_node;
}
- else if (! saw_named_field)
+ else if (!saw_named_field)
{
error ("%Jflexible array member in otherwise empty struct", x);
TREE_TYPE (x) = error_mark_node;
}
}
- if (pedantic && TREE_CODE (t) == RECORD_TYPE
+ if (pedantic && !in_system_header && TREE_CODE (t) == RECORD_TYPE
&& flexible_array_type_p (TREE_TYPE (x)))
pedwarn ("%Jinvalid use of structure with flexible array member", x);
layout_type (t);
- /* Delete all zero-width bit-fields from the fieldlist. */
+ /* Give bit-fields their proper types. */
{
tree *fieldlistp = &fieldlist;
while (*fieldlistp)
- if (TREE_CODE (*fieldlistp) == FIELD_DECL && DECL_INITIAL (*fieldlistp))
- *fieldlistp = TREE_CHAIN (*fieldlistp);
+ if (TREE_CODE (*fieldlistp) == FIELD_DECL && DECL_INITIAL (*fieldlistp)
+ && TREE_TYPE (*fieldlistp) != error_mark_node)
+ {
+ unsigned HOST_WIDE_INT width
+ = tree_low_cst (DECL_INITIAL (*fieldlistp), 1);
+ tree type = TREE_TYPE (*fieldlistp);
+ if (width != TYPE_PRECISION (type))
+ TREE_TYPE (*fieldlistp)
+ = build_nonstandard_integer_type (width, TYPE_UNSIGNED (type));
+ DECL_INITIAL (*fieldlistp) = 0;
+ }
else
fieldlistp = &TREE_CHAIN (*fieldlistp);
}
ensure that this lives as long as the rest of the struct decl.
All decls in an inline function need to be saved. */
- space = ggc_alloc_cleared (sizeof (struct lang_type));
- space2 = ggc_alloc (sizeof (struct sorted_fields_type) + len * sizeof (tree));
+ space = GGC_CNEW (struct lang_type);
+ space2 = GGC_NEWVAR (struct sorted_fields_type,
+ sizeof (struct sorted_fields_type) + len * sizeof (tree));
len = 0;
space->s = space2;
layout_decl (decl, 0);
if (c_dialect_objc ())
objc_check_decl (decl);
- rest_of_decl_compilation (decl, NULL, toplevel, 0);
- if (! toplevel)
+ rest_of_decl_compilation (decl, toplevel, 0);
+ if (!toplevel)
expand_decl (decl);
}
}
pushtag (name, enumtype);
}
+ if (C_TYPE_BEING_DEFINED (enumtype))
+ error ("nested redefinition of %<enum %s%>", IDENTIFIER_POINTER (name));
+
C_TYPE_BEING_DEFINED (enumtype) = 1;
if (TYPE_VALUES (enumtype) != 0)
{
/* This enum is a named one that has been declared already. */
- error ("redeclaration of `enum %s'", IDENTIFIER_POINTER (name));
+ error ("redeclaration of %<enum %s%>", IDENTIFIER_POINTER (name));
/* Completely replace its old definition.
The old enumerators remain defined, however. */
unsign = (tree_int_cst_sgn (minnode) >= 0);
precision = MAX (min_precision (minnode, unsign),
min_precision (maxnode, unsign));
+
if (TYPE_PACKED (enumtype) || precision > TYPE_PRECISION (integer_type_node))
{
tem = c_common_type_for_size (precision, unsign);
TYPE_MIN_VALUE (enumtype) = TYPE_MIN_VALUE (tem);
TYPE_MAX_VALUE (enumtype) = TYPE_MAX_VALUE (tem);
- TYPE_PRECISION (enumtype) = TYPE_PRECISION (tem);
TYPE_UNSIGNED (enumtype) = TYPE_UNSIGNED (tem);
TYPE_SIZE (enumtype) = 0;
+
+ /* If the precision of the type was specific with an attribute and it
+ was too small, give an error. Otherwise, use it. */
+ if (TYPE_PRECISION (enumtype))
+ {
+ if (precision > TYPE_PRECISION (enumtype))
+ error ("specified mode too small for enumeral values");
+ }
+ else
+ TYPE_PRECISION (enumtype) = TYPE_PRECISION (tem);
+
layout_type (enumtype);
if (values != error_mark_node)
/* Record the min/max values so that we can warn about bit-field
enumerations that are too small for the values. */
- lt = ggc_alloc_cleared (sizeof (struct lang_type));
+ lt = GGC_CNEW (struct lang_type);
lt->enum_min = minnode;
lt->enum_max = maxnode;
TYPE_LANG_SPECIFIC (enumtype) = lt;
value = 0;
else if (TREE_CODE (value) != INTEGER_CST)
{
- error ("enumerator value for '%E' is not an integer constant", name);
+ error ("enumerator value for %qE is not an integer constant", name);
value = 0;
}
else
error ("overflow in enumeration values");
}
- if (pedantic && ! int_fits_type_p (value, integer_type_node))
+ if (pedantic && !int_fits_type_p (value, integer_type_node))
{
- pedwarn ("ISO C restricts enumerator values to range of `int'");
+ pedwarn ("ISO C restricts enumerator values to range of %<int%>");
/* XXX This causes -pedantic to change the meaning of the program.
Remove? -zw 2004-03-15 */
value = convert (integer_type_node, value);
yyparse to report a parse error. */
int
-start_function (tree declspecs, tree declarator, tree attributes)
+start_function (struct c_declspecs *declspecs, struct c_declarator *declarator,
+ tree attributes)
{
tree decl1, old_decl;
- tree restype;
- int old_immediate_size_expand = immediate_size_expand;
+ tree restype, resdecl;
current_function_returns_value = 0; /* Assume, until we see it does. */
current_function_returns_null = 0;
current_function_returns_abnormally = 0;
warn_about_return_type = 0;
current_extern_inline = 0;
- c_in_iteration_stmt = 0;
- c_in_case_stmt = 0;
+ c_switch_stack = NULL;
- /* Don't expand any sizes in the return type of the function. */
- immediate_size_expand = 0;
+ /* Indicate no valid break/continue context by setting these variables
+ to some non-null, non-label value. We'll notice and emit the proper
+ error message in c_finish_bc_stmt. */
+ c_break_label = c_cont_label = size_zero_node;
- decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL);
+ decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, true, NULL);
/* If the declarator is not suitable for a function definition,
cause a syntax error. */
if (decl1 == 0)
- {
- immediate_size_expand = old_immediate_size_expand;
- return 0;
- }
+ return 0;
decl_attributes (&decl1, attributes, 0);
if (DECL_DECLARED_INLINE_P (decl1)
&& DECL_UNINLINABLE (decl1)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (decl1)))
- warning ("%Jinline function '%D' given attribute noinline", decl1, decl1);
+ warning ("%Jinline function %qD given attribute noinline", decl1, decl1);
announce_function (decl1);
}
if (warn_about_return_type)
- pedwarn_c99 ("return type defaults to `int'");
+ pedwarn_c99 ("return type defaults to %<int%>");
/* Make the init_value nonzero so pushdecl knows this is not tentative.
error_mark_node is replaced below (in pop_scope) with the BLOCK. */
old_decl = lookup_name_in_scope (DECL_NAME (decl1), current_scope);
if (old_decl != 0 && TREE_CODE (TREE_TYPE (old_decl)) == FUNCTION_TYPE
&& !DECL_BUILT_IN (old_decl)
- && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (decl1)))
- == TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (old_decl))))
+ && comptypes (TREE_TYPE (TREE_TYPE (decl1)),
+ TREE_TYPE (TREE_TYPE (old_decl)))
&& TYPE_ARG_TYPES (TREE_TYPE (decl1)) == 0)
{
- TREE_TYPE (decl1) = TREE_TYPE (old_decl);
+ TREE_TYPE (decl1) = composite_type (TREE_TYPE (old_decl),
+ TREE_TYPE (decl1));
current_function_prototype_locus = DECL_SOURCE_LOCATION (old_decl);
}
if (warn_strict_prototypes
&& TYPE_ARG_TYPES (TREE_TYPE (decl1)) == 0
&& C_DECL_ISNT_PROTOTYPE (old_decl))
- warning ("function declaration isn't a prototype");
+ warning ("function declaration isn%'t a prototype");
/* Optionally warn of any global def with no previous prototype. */
else if (warn_missing_prototypes
&& TREE_PUBLIC (decl1)
- && ! MAIN_NAME_P (DECL_NAME (decl1))
+ && !MAIN_NAME_P (DECL_NAME (decl1))
&& C_DECL_ISNT_PROTOTYPE (old_decl))
- warning ("%Jno previous prototype for '%D'", decl1, decl1);
+ warning ("%Jno previous prototype for %qD", decl1, decl1);
/* Optionally warn of any def with no previous prototype
if the function has already been used. */
else if (warn_missing_prototypes
&& old_decl != 0 && TREE_USED (old_decl)
&& TYPE_ARG_TYPES (TREE_TYPE (old_decl)) == 0)
- warning ("%J'%D' was used with no prototype before its definition",
+ warning ("%J%qD was used with no prototype before its definition",
decl1, decl1);
/* Optionally warn of any global def with no previous declaration. */
else if (warn_missing_declarations
&& TREE_PUBLIC (decl1)
&& old_decl == 0
- && ! MAIN_NAME_P (DECL_NAME (decl1)))
- warning ("%Jno previous declaration for '%D'", decl1, decl1);
+ && !MAIN_NAME_P (DECL_NAME (decl1)))
+ warning ("%Jno previous declaration for %qD", decl1, decl1);
/* Optionally warn of any def with no previous declaration
if the function has already been used. */
else if (warn_missing_declarations
&& old_decl != 0 && TREE_USED (old_decl)
&& C_DECL_IMPLICIT (old_decl))
- warning ("%J`%D' was used with no declaration before its definition",
+ warning ("%J%qD was used with no declaration before its definition",
decl1, decl1);
/* This is a definition, not a reference.
if (current_function_decl != 0)
TREE_PUBLIC (decl1) = 0;
-#ifdef ENABLE_CHECKING
/* This is the earliest point at which we might know the assembler
name of the function. Thus, if it's set before this, die horribly. */
- if (DECL_ASSEMBLER_NAME_SET_P (decl1))
- abort ();
-#endif
+ gcc_assert (!DECL_ASSEMBLER_NAME_SET_P (decl1));
/* If #pragma weak was used, mark the decl weak now. */
if (current_scope == file_scope)
if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (decl1)))
!= integer_type_node)
- pedwarn ("%Jreturn type of '%D' is not `int'", decl1, decl1);
+ pedwarn ("%Jreturn type of %qD is not %<int%>", decl1, decl1);
for (args = TYPE_ARG_TYPES (TREE_TYPE (decl1)); args;
args = TREE_CHAIN (args))
{
case 1:
if (TYPE_MAIN_VARIANT (type) != integer_type_node)
- pedwarn ("%Jfirst argument of '%D' should be `int'",
+ pedwarn ("%Jfirst argument of %qD should be %<int%>",
decl1, decl1);
break;
|| TREE_CODE (TREE_TYPE (type)) != POINTER_TYPE
|| (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (type)))
!= char_type_node))
- pedwarn ("%Jsecond argument of '%D' should be 'char **'",
+ pedwarn ("%Jsecond argument of %qD should be %<char **%>",
decl1, decl1);
break;
|| TREE_CODE (TREE_TYPE (type)) != POINTER_TYPE
|| (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (type)))
!= char_type_node))
- pedwarn ("%Jthird argument of '%D' should probably be "
- "'char **'", decl1, decl1);
+ pedwarn ("%Jthird argument of %qD should probably be "
+ "%<char **%>", decl1, decl1);
break;
}
}
argument because it's only mentioned in an appendix of the
standard. */
if (argct > 0 && (argct < 2 || argct > 3))
- pedwarn ("%J'%D' takes only zero or two arguments", decl1, decl1);
+ pedwarn ("%J%qD takes only zero or two arguments", decl1, decl1);
- if (! TREE_PUBLIC (decl1))
- pedwarn ("%J'%D' is normally a non-static function", decl1, decl1);
+ if (!TREE_PUBLIC (decl1))
+ pedwarn ("%J%qD is normally a non-static function", decl1, decl1);
}
/* Record the decl so that the function name is defined.
push_scope ();
declare_parm_level ();
- make_decl_rtl (current_function_decl, NULL);
-
restype = TREE_TYPE (TREE_TYPE (current_function_decl));
/* Promote the value to int before returning it. */
if (c_promoting_integer_type_p (restype))
else
restype = integer_type_node;
}
- DECL_RESULT (current_function_decl)
- = build_decl (RESULT_DECL, NULL_TREE, restype);
- /* If this fcn was already referenced via a block-scope `extern' decl
- (or an implicit decl), propagate certain information about the usage. */
- if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (current_function_decl)))
- TREE_ADDRESSABLE (current_function_decl) = 1;
-
- immediate_size_expand = old_immediate_size_expand;
+ resdecl = build_decl (RESULT_DECL, NULL_TREE, restype);
+ DECL_ARTIFICIAL (resdecl) = 1;
+ DECL_IGNORED_P (resdecl) = 1;
+ DECL_RESULT (current_function_decl) = resdecl;
start_fname_decls ();
need only record them as in effect and complain if any redundant
old-style parm decls were written. */
static void
-store_parm_decls_newstyle (tree fndecl, tree arg_info)
+store_parm_decls_newstyle (tree fndecl, const struct c_arg_info *arg_info)
{
tree decl;
- tree parms = ARG_INFO_PARMS (arg_info);
- tree tags = ARG_INFO_TAGS (arg_info);
- tree others = ARG_INFO_OTHERS (arg_info);
if (current_scope->bindings)
{
(this happens when a function definition has just an ellipsis in
its parameter list). */
else if (warn_traditional && !in_system_header && !current_function_scope
- && ARG_INFO_TYPES (arg_info) != error_mark_node)
+ && arg_info->types != error_mark_node)
warning ("%Jtraditional C rejects ISO C style function definitions",
fndecl);
/* Now make all the parameter declarations visible in the function body.
We can bypass most of the grunt work of pushdecl. */
- for (decl = parms; decl; decl = TREE_CHAIN (decl))
+ for (decl = arg_info->parms; decl; decl = TREE_CHAIN (decl))
{
DECL_CONTEXT (decl) = current_function_decl;
if (DECL_NAME (decl))
- bind (DECL_NAME (decl), decl, current_scope);
+ bind (DECL_NAME (decl), decl, current_scope,
+ /*invisible=*/false, /*nested=*/false);
else
error ("%Jparameter name omitted", decl);
}
/* Record the parameter list in the function declaration. */
- DECL_ARGUMENTS (fndecl) = parms;
+ DECL_ARGUMENTS (fndecl) = arg_info->parms;
/* Now make all the ancillary declarations visible, likewise. */
- for (decl = others; decl; decl = TREE_CHAIN (decl))
+ for (decl = arg_info->others; decl; decl = TREE_CHAIN (decl))
{
DECL_CONTEXT (decl) = current_function_decl;
if (DECL_NAME (decl))
- bind (DECL_NAME (decl), decl, current_scope);
+ bind (DECL_NAME (decl), decl, current_scope,
+ /*invisible=*/false, /*nested=*/false);
}
/* And all the tag declarations. */
- for (decl = tags; decl; decl = TREE_CHAIN (decl))
+ for (decl = arg_info->tags; decl; decl = TREE_CHAIN (decl))
if (TREE_PURPOSE (decl))
- bind (TREE_PURPOSE (decl), TREE_VALUE (decl), current_scope);
+ bind (TREE_PURPOSE (decl), TREE_VALUE (decl), current_scope,
+ /*invisible=*/false, /*nested=*/false);
}
/* Subroutine of store_parm_decls which handles old-style function
definitions (separate parameter list and declarations). */
static void
-store_parm_decls_oldstyle (tree fndecl, tree arg_info)
+store_parm_decls_oldstyle (tree fndecl, const struct c_arg_info *arg_info)
{
struct c_binding *b;
tree parm, decl, last;
- tree parmids = ARG_INFO_PARMS (arg_info);
+ tree parmids = arg_info->parms;
/* We use DECL_WEAK as a flag to show which parameters have been
seen already, since it is not used on PARM_DECL. */
#ifdef ENABLE_CHECKING
for (b = current_scope->bindings; b; b = b->prev)
- if (TREE_CODE (b->decl) == PARM_DECL && DECL_WEAK (b->decl))
- abort ();
+ gcc_assert (TREE_CODE (b->decl) != PARM_DECL || !DECL_WEAK (b->decl));
#endif
if (warn_old_style_definition && !in_system_header)
}
b = I_SYMBOL_BINDING (TREE_VALUE (parm));
- if (b && b->contour == current_scope)
+ if (b && B_IN_CURRENT_SCOPE (b))
{
decl = b->decl;
/* If we got something other than a PARM_DECL it is an error. */
if (TREE_CODE (decl) != PARM_DECL)
- error ("%J'%D' declared as a non-parameter", decl, decl);
+ error ("%J%qD declared as a non-parameter", decl, decl);
/* If the declaration is already marked, we have a duplicate
name. Complain and ignore the duplicate. */
else if (DECL_WEAK (decl))
{
- error ("%Jmultiple parameters named '%D'", decl, decl);
+ error ("%Jmultiple parameters named %qD", decl, decl);
TREE_PURPOSE (parm) = 0;
continue;
}
an int. */
else if (VOID_TYPE_P (TREE_TYPE (decl)))
{
- error ("%Jparameter '%D' declared with void type", decl, decl);
+ error ("%Jparameter %qD declared with void type", decl, decl);
TREE_TYPE (decl) = integer_type_node;
DECL_ARG_TYPE (decl) = integer_type_node;
layout_decl (decl, 0);
pushdecl (decl);
if (flag_isoc99)
- pedwarn ("%Jtype of '%D' defaults to 'int'", decl, decl);
+ pedwarn ("%Jtype of %qD defaults to %<int%>", decl, decl);
else if (extra_warnings)
- warning ("%Jtype of '%D' defaults to 'int'", decl, decl);
+ warning ("%Jtype of %qD defaults to %<int%>", decl, decl);
}
TREE_PURPOSE (parm) = decl;
if (!COMPLETE_TYPE_P (TREE_TYPE (parm)))
{
- error ("%Jparameter '%D' has incomplete type", parm, parm);
+ error ("%Jparameter %qD has incomplete type", parm, parm);
TREE_TYPE (parm) = error_mark_node;
}
- if (! DECL_WEAK (parm))
+ if (!DECL_WEAK (parm))
{
- error ("%Jdeclaration for parameter '%D' but no such parameter",
+ error ("%Jdeclaration for parameter %qD but no such parameter",
parm, parm);
/* Pretend the parameter was not missing.
if (parm == 0 || type == 0
|| TYPE_MAIN_VARIANT (TREE_VALUE (type)) == void_type_node)
{
- error ("number of arguments doesn't match prototype");
+ error ("number of arguments doesn%'t match prototype");
error ("%Hprototype declaration",
¤t_function_prototype_locus);
break;
/* Type for passing arg must be consistent with that
declared for the arg. ISO C says we take the unqualified
type for parameters declared with qualified type. */
- if (! comptypes (TYPE_MAIN_VARIANT (DECL_ARG_TYPE (parm)),
- TYPE_MAIN_VARIANT (TREE_VALUE (type)),
- COMPARE_STRICT))
+ if (!comptypes (TYPE_MAIN_VARIANT (DECL_ARG_TYPE (parm)),
+ TYPE_MAIN_VARIANT (TREE_VALUE (type))))
{
if (TYPE_MAIN_VARIANT (TREE_TYPE (parm))
== TYPE_MAIN_VARIANT (TREE_VALUE (type)))
if (pedantic)
{
- pedwarn ("promoted argument '%D' "
- "doesn't match prototype", parm);
+ pedwarn ("promoted argument %qD "
+ "doesn%'t match prototype", parm);
pedwarn ("%Hprototype declaration",
¤t_function_prototype_locus);
}
}
else
{
- error ("argument '%D' doesn't match prototype", parm);
+ error ("argument %qD doesn%'t match prototype", parm);
error ("%Hprototype declaration",
¤t_function_prototype_locus);
}
will be a variant of the main variant of the original function
type. */
- TREE_TYPE (fndecl) = build_type_copy (TREE_TYPE (fndecl));
-
- TYPE_ACTUAL_ARG_TYPES (TREE_TYPE (fndecl)) = actual;
- }
-}
-
-/* A subroutine of store_parm_decls called via walk_tree. Mark all
- decls non-local. */
+ TREE_TYPE (fndecl) = build_variant_type_copy (TREE_TYPE (fndecl));
-static tree
-set_decl_nonlocal (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
-{
- tree t = *tp;
-
- if (DECL_P (t))
- {
- DECL_NONLOCAL (t) = 1;
- *walk_subtrees = 0;
+ TYPE_ACTUAL_ARG_TYPES (TREE_TYPE (fndecl)) = actual;
}
- else if (TYPE_P (t))
- *walk_subtrees = 0;
+}
- return NULL;
+/* Store parameter declarations passed in ARG_INFO into the current
+ function declaration. */
+
+void
+store_parm_decls_from (struct c_arg_info *arg_info)
+{
+ current_function_arg_info = arg_info;
+ store_parm_decls ();
}
/* Store the parameter declarations into the current function declaration.
store_parm_decls (void)
{
tree fndecl = current_function_decl;
-
- /* The function containing FNDECL, if any. */
- tree context = decl_function_context (fndecl);
+ bool proto;
/* The argument information block for FNDECL. */
- tree arg_info = DECL_ARGUMENTS (fndecl);
+ struct c_arg_info *arg_info = current_function_arg_info;
+ current_function_arg_info = 0;
/* True if this definition is written with a prototype. Note:
despite C99 6.7.5.3p14, we can *not* treat an empty argument
list in a function definition as equivalent to (void) -- an
empty argument list specifies the function has no parameters,
but only (void) sets up a prototype for future calls. */
- bool proto = ARG_INFO_TYPES (arg_info) != 0;
+ proto = arg_info->types != 0;
if (proto)
store_parm_decls_newstyle (fndecl, arg_info);
allocate_struct_function (fndecl);
/* Begin the statement tree for this function. */
- begin_stmt_tree (&DECL_SAVED_TREE (fndecl));
-
- /* If this is a nested function, save away the sizes of any
- variable-size types so that we can expand them when generating
- RTL. */
- if (context)
- {
- tree t;
+ DECL_SAVED_TREE (fndecl) = push_stmt_list ();
- DECL_LANG_SPECIFIC (fndecl)->pending_sizes
- = nreverse (get_pending_sizes ());
- for (t = DECL_LANG_SPECIFIC (fndecl)->pending_sizes;
- t;
- t = TREE_CHAIN (t))
- {
- /* We will have a nonlocal use of whatever variables are
- buried inside here. */
- walk_tree (&TREE_OPERAND (TREE_VALUE (t), 0),
- set_decl_nonlocal, NULL, NULL);
-
- SAVE_EXPR_CONTEXT (TREE_VALUE (t)) = context;
- }
- }
-
- /* This function is being processed in whole-function mode. */
- cfun->x_whole_function_mode_p = 1;
+ /* ??? Insert the contents of the pending sizes list into the function
+ to be evaluated. This just changes mis-behavior until assign_parms
+ phase ordering problems are resolved. */
+ {
+ tree t;
+ for (t = nreverse (get_pending_sizes ()); t ; t = TREE_CHAIN (t))
+ add_stmt (TREE_VALUE (t));
+ }
/* Even though we're inside a function body, we still don't want to
call expand_expr to calculate the size of a variable-sized array.
We haven't necessarily assigned RTL to all variables yet, so it's
not safe to try to expand expressions involving them. */
- immediate_size_expand = 0;
cfun->x_dont_save_pending_sizes_p = 1;
}
\f
-/* Give FNDECL and all its nested functions to cgraph for compilation. */
+/* Handle attribute((warn_unused_result)) on FNDECL and all its nested
+ functions. */
static void
-c_finalize (tree fndecl)
+c_warn_unused_result_recursively (tree fndecl)
{
struct cgraph_node *cgn;
/* Handle attribute((warn_unused_result)). Relies on gimple input. */
c_warn_unused_result (&DECL_SAVED_TREE (fndecl));
- /* ??? Objc emits functions after finalizing the compilation unit.
- This should be cleaned up later and this conditional removed. */
- if (cgraph_global_info_ready)
- {
- c_expand_body (fndecl);
- return;
- }
-
/* Finalize all nested functions now. */
cgn = cgraph_node (fndecl);
for (cgn = cgn->nested; cgn ; cgn = cgn->next_nested)
- c_finalize (cgn->decl);
-
- cgraph_finalize_function (fndecl, false);
+ c_warn_unused_result_recursively (cgn->decl);
}
/* Finish up a function declaration and compile that function
{
tree fndecl = current_function_decl;
- /* When a function declaration is totally empty, e.g.
- void foo(void) { }
- (the argument list is irrelevant) the compstmt rule will not
- bother calling push_scope/pop_scope, which means we get here with
- the scope stack out of sync. Detect this situation by noticing
- that current_scope is still as store_parm_decls left it, and do
- a dummy push/pop to get back to consistency.
- Note that the call to push_scope does not actually push another
- scope - see there for details. */
-
- if (current_scope->parm_flag && next_is_function_body)
- {
- push_scope ();
- pop_scope ();
- }
-
if (TREE_CODE (fndecl) == FUNCTION_DECL
&& targetm.calls.promote_prototypes (TREE_TYPE (fndecl)))
{
/* If warn_main is 1 (-Wmain) or 2 (-Wall), we have already warned.
If warn_main is -1 (-Wno-main) we don't want to be warned. */
if (!warn_main)
- pedwarn ("%Jreturn type of '%D' is not `int'", fndecl, fndecl);
+ pedwarn ("%Jreturn type of %qD is not %<int%>", fndecl, fndecl);
}
else
{
-#ifdef DEFAULT_MAIN_RETURN
- /* Make it so that `main' always returns success by default. */
- DEFAULT_MAIN_RETURN;
-#else
if (flag_isoc99)
- c_expand_return (integer_zero_node);
-#endif
+ c_finish_return (integer_zero_node);
}
}
- finish_fname_decls ();
-
/* Tie off the statement tree for this function. */
- finish_stmt_tree (&DECL_SAVED_TREE (fndecl));
+ DECL_SAVED_TREE (fndecl) = pop_stmt_list (DECL_SAVED_TREE (fndecl));
+
+ finish_fname_decls ();
/* Complain if there's just no return statement. */
if (warn_return_type
&& !targetm.have_ctors_dtors)
static_dtors = tree_cons (NULL_TREE, fndecl, static_dtors);
+ /* Finalize the ELF visibility for the function. */
+ c_determine_visibility (fndecl);
+
/* Genericize before inlining. Delay genericizing nested functions
until their parent function is genericized. Since finalizing
requires GENERIC, delay that as well. */
-
+
if (DECL_INITIAL (fndecl) && DECL_INITIAL (fndecl) != error_mark_node)
{
if (!decl_function_context (fndecl))
{
c_genericize (fndecl);
- lower_nested_functions (fndecl);
- c_finalize (fndecl);
+ c_warn_unused_result_recursively (fndecl);
+
+ /* ??? Objc emits functions after finalizing the compilation unit.
+ This should be cleaned up later and this conditional removed. */
+ if (cgraph_global_info_ready)
+ {
+ c_expand_body (fndecl);
+ return;
+ }
+
+ cgraph_finalize_function (fndecl, false);
}
else
{
current_function_decl = NULL;
}
-/* Generate the RTL for the body of FNDECL. If NESTED_P is nonzero,
- then we are already in the process of generating RTL for another
- function. */
+/* Generate the RTL for the body of FNDECL. */
-static void
-c_expand_body_1 (tree fndecl, int nested_p)
+void
+c_expand_body (tree fndecl)
{
- if (nested_p)
- {
- /* Make sure that we will evaluate variable-sized types involved
- in our function's type. */
- expand_pending_sizes (DECL_LANG_SPECIFIC (fndecl)->pending_sizes);
- /* Squirrel away our current state. */
- push_function_context ();
- }
-
- tree_rest_of_compilation (fndecl, nested_p);
+ if (!DECL_INITIAL (fndecl)
+ || DECL_INITIAL (fndecl) == error_mark_node)
+ return;
- if (nested_p)
- /* Return to the enclosing function. */
- pop_function_context ();
+ tree_rest_of_compilation (fndecl);
if (DECL_STATIC_CONSTRUCTOR (fndecl)
&& targetm.have_ctors_dtors)
targetm.asm_out.constructor (XEXP (DECL_RTL (fndecl), 0),
- DEFAULT_INIT_PRIORITY);
+ DEFAULT_INIT_PRIORITY);
if (DECL_STATIC_DESTRUCTOR (fndecl)
&& targetm.have_ctors_dtors)
targetm.asm_out.destructor (XEXP (DECL_RTL (fndecl), 0),
- DEFAULT_INIT_PRIORITY);
-}
-
-/* Like c_expand_body_1 but only for unnested functions. */
-
-void
-c_expand_body (tree fndecl)
-{
-
- if (DECL_INITIAL (fndecl) && DECL_INITIAL (fndecl) != error_mark_node)
- c_expand_body_1 (fndecl, 0);
+ DEFAULT_INIT_PRIORITY);
}
\f
/* Check the declarations given in a for-loop for satisfying the C99
/* If we get here, declarations have been used in a for loop without
the C99 for loop scope. This doesn't make much sense, so don't
allow it. */
- error ("'for' loop initial declaration used outside C99 mode");
+ error ("%<for%> loop initial declaration used outside C99 mode");
return;
}
/* C99 subclause 6.8.5 paragraph 3:
{
case VAR_DECL:
if (TREE_STATIC (decl))
- error ("%Jdeclaration of static variable '%D' in 'for' loop "
+ error ("%Jdeclaration of static variable %qD in %<for%> loop "
"initial declaration", decl, decl);
else if (DECL_EXTERNAL (decl))
- error ("%Jdeclaration of 'extern' variable '%D' in 'for' loop "
+ error ("%Jdeclaration of %<extern%> variable %qD in %<for%> loop "
"initial declaration", decl, decl);
break;
case RECORD_TYPE:
- error ("'struct %E' declared in 'for' loop initial declaration", id);
+ error ("%<struct %E%> declared in %<for%> loop initial declaration",
+ id);
break;
case UNION_TYPE:
- error ("'union %E' declared in 'for' loop initial declaration", id);
+ error ("%<union %E%> declared in %<for%> loop initial declaration",
+ id);
break;
case ENUMERAL_TYPE:
- error ("'enum %E' declared in 'for' loop initial declaration", id);
+ error ("%<enum %E%> declared in %<for%> loop initial declaration",
+ id);
break;
default:
- error ("%Jdeclaration of non-variable '%D' in 'for' loop "
+ error ("%Jdeclaration of non-variable %qD in %<for%> loop "
"initial declaration", decl, decl);
}
}
c_push_function_context (struct function *f)
{
struct language_function *p;
- p = ggc_alloc (sizeof (struct language_function));
+ p = GGC_NEW (struct language_function);
f->language = p;
p->base.x_stmt_tree = c_stmt_tree;
- p->base.x_scope_stmt_stack = c_scope_stmt_stack;
- p->x_in_iteration_stmt = c_in_iteration_stmt;
- p->x_in_case_stmt = c_in_case_stmt;
+ p->x_break_label = c_break_label;
+ p->x_cont_label = c_cont_label;
+ p->x_switch_stack = c_switch_stack;
+ p->arg_info = current_function_arg_info;
p->returns_value = current_function_returns_value;
p->returns_null = current_function_returns_null;
p->returns_abnormally = current_function_returns_abnormally;
}
c_stmt_tree = p->base.x_stmt_tree;
- c_scope_stmt_stack = p->base.x_scope_stmt_stack;
- c_in_iteration_stmt = p->x_in_iteration_stmt;
- c_in_case_stmt = p->x_in_case_stmt;
+ c_break_label = p->x_break_label;
+ c_cont_label = p->x_cont_label;
+ c_switch_stack = p->x_switch_stack;
+ current_function_arg_info = p->arg_info;
current_function_returns_value = p->returns_value;
current_function_returns_null = p->returns_null;
current_function_returns_abnormally = p->returns_abnormally;
if (!DECL_LANG_SPECIFIC (decl))
return;
- ld = ggc_alloc (sizeof (struct lang_decl));
+ ld = GGC_NEW (struct lang_decl);
memcpy (ld, DECL_LANG_SPECIFIC (decl), sizeof (struct lang_decl));
DECL_LANG_SPECIFIC (decl) = ld;
}
return &c_stmt_tree;
}
-/* Returns the stack of SCOPE_STMTs for the current function. */
-
-tree *
-current_scope_stmt_stack (void)
-{
- return &c_scope_stmt_stack;
-}
-
/* Nonzero if TYPE is an anonymous union or struct type. Always 0 in
C. */
int
-anon_aggr_type_p (tree node ATTRIBUTE_UNUSED)
+anon_aggr_type_p (tree ARG_UNUSED (node))
{
return 0;
}
-/* Dummy function in place of callback used by C++. */
-
-void
-extract_interface_info (void)
-{
-}
-
-/* Return a new COMPOUND_STMT, after adding it to the current
- statement tree. */
-
-tree
-c_begin_compound_stmt (void)
-{
- tree stmt;
-
- /* Create the COMPOUND_STMT. */
- stmt = add_stmt (build_stmt (COMPOUND_STMT, NULL_TREE));
-
- return stmt;
-}
-
-/* Expand DECL if it declares an entity not handled by the
- common code. */
-
-int
-c_expand_decl (tree decl)
-{
- if (TREE_CODE (decl) == VAR_DECL && !TREE_STATIC (decl))
- {
- /* Let the back-end know about this variable. */
- if (!anon_aggr_type_p (TREE_TYPE (decl)))
- emit_local_var (decl);
- else
- expand_anon_union_decl (decl, NULL_TREE,
- DECL_ANON_UNION_ELEMS (decl));
- }
- else if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
- make_rtl_for_local_static (decl);
- /* Expand nested functions. */
- else if (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_CONTEXT (decl) == current_function_decl
- && DECL_SAVED_TREE (decl))
- c_expand_body_1 (decl, 1);
- else
- return 0;
-
- return 1;
-}
-
/* Return the global value of T as a symbol. */
tree
struct c_binding *b;
for (b = I_SYMBOL_BINDING (t); b; b = b->shadowed)
- if (b->contour == file_scope || b->contour == external_scope)
+ if (B_IN_FILE_SCOPE (b) || B_IN_EXTERNAL_SCOPE (b))
return b->decl;
return 0;
void
record_builtin_type (enum rid rid_index, const char *name, tree type)
{
- tree id;
+ tree id, decl;
if (name == 0)
id = ridpointers[(int) rid_index];
else
id = get_identifier (name);
- pushdecl (build_decl (TYPE_DECL, id, type));
+ decl = build_decl (TYPE_DECL, id, type);
+ pushdecl (decl);
+ if (debug_hooks->type_decl)
+ debug_hooks->type_decl (decl, false);
}
/* Build the void_list_node (void_type_node having been created). */
return t;
}
+/* Return a c_parm structure with the given SPECS, ATTRS and DECLARATOR. */
+
+struct c_parm *
+build_c_parm (struct c_declspecs *specs, tree attrs,
+ struct c_declarator *declarator)
+{
+ struct c_parm *ret = XOBNEW (&parser_obstack, struct c_parm);
+ ret->specs = specs;
+ ret->attrs = attrs;
+ ret->declarator = declarator;
+ return ret;
+}
+
+/* Return a declarator with nested attributes. TARGET is the inner
+ declarator to which these attributes apply. ATTRS are the
+ attributes. */
+
+struct c_declarator *
+build_attrs_declarator (tree attrs, struct c_declarator *target)
+{
+ struct c_declarator *ret = XOBNEW (&parser_obstack, struct c_declarator);
+ ret->kind = cdk_attrs;
+ ret->declarator = target;
+ ret->u.attrs = attrs;
+ return ret;
+}
+
+/* Return a declarator for a function with arguments specified by ARGS
+ and return type specified by TARGET. */
+
+struct c_declarator *
+build_function_declarator (struct c_arg_info *args,
+ struct c_declarator *target)
+{
+ struct c_declarator *ret = XOBNEW (&parser_obstack, struct c_declarator);
+ ret->kind = cdk_function;
+ ret->declarator = target;
+ ret->u.arg_info = args;
+ return ret;
+}
+
+/* Return a declarator for the identifier IDENT (which may be
+ NULL_TREE for an abstract declarator). */
+
+struct c_declarator *
+build_id_declarator (tree ident)
+{
+ struct c_declarator *ret = XOBNEW (&parser_obstack, struct c_declarator);
+ ret->kind = cdk_id;
+ ret->declarator = 0;
+ ret->u.id = ident;
+ return ret;
+}
+
/* Return something to represent absolute declarators containing a *.
TARGET is the absolute declarator that the * contains.
- TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
- to apply to the pointer type, represented as identifiers, possible mixed
- with attributes.
+ TYPE_QUALS_ATTRS is a structure for type qualifiers and attributes
+ to apply to the pointer type. */
+
+struct c_declarator *
+make_pointer_declarator (struct c_declspecs *type_quals_attrs,
+ struct c_declarator *target)
+{
+ tree attrs;
+ int quals = 0;
+ struct c_declarator *itarget = target;
+ struct c_declarator *ret = XOBNEW (&parser_obstack, struct c_declarator);
+ if (type_quals_attrs)
+ {
+ attrs = type_quals_attrs->attrs;
+ quals = quals_from_declspecs (type_quals_attrs);
+ if (attrs != NULL_TREE)
+ itarget = build_attrs_declarator (attrs, target);
+ }
+ ret->kind = cdk_pointer;
+ ret->declarator = itarget;
+ ret->u.pointer_quals = quals;
+ return ret;
+}
- We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
- if attributes are present) and whose type is the modifier list. */
+/* Return a pointer to a structure for an empty list of declaration
+ specifiers. */
-tree
-make_pointer_declarator (tree type_quals_attrs, tree target)
+struct c_declspecs *
+build_null_declspecs (void)
{
- tree quals, attrs;
- tree itarget = target;
- split_specs_attrs (type_quals_attrs, &quals, &attrs);
- if (attrs != NULL_TREE)
- itarget = tree_cons (attrs, target, NULL_TREE);
- return build1 (INDIRECT_REF, quals, itarget);
+ struct c_declspecs *ret = XOBNEW (&parser_obstack, struct c_declspecs);
+ ret->type = 0;
+ ret->decl_attr = 0;
+ ret->attrs = 0;
+ ret->typespec_word = cts_none;
+ ret->storage_class = csc_none;
+ ret->non_sc_seen_p = false;
+ ret->typedef_p = false;
+ ret->explicit_signed_p = false;
+ ret->deprecated_p = false;
+ ret->default_int_p = false;
+ ret->long_p = false;
+ ret->long_long_p = false;
+ ret->short_p = false;
+ ret->signed_p = false;
+ ret->unsigned_p = false;
+ ret->complex_p = false;
+ ret->inline_p = false;
+ ret->thread_p = false;
+ ret->const_p = false;
+ ret->volatile_p = false;
+ ret->restrict_p = false;
+ return ret;
}
-/* A wrapper around lhd_set_decl_assembler_name that gives static
- variables their C names if they are at file scope and only one
- translation unit is being compiled, for backwards compatibility
- with certain bizarre assembler hacks (like crtstuff.c). */
+/* Add the type qualifier QUAL to the declaration specifiers SPECS,
+ returning SPECS. */
-void
-c_static_assembler_name (tree decl)
+struct c_declspecs *
+declspecs_add_qual (struct c_declspecs *specs, tree qual)
{
- if (num_in_fnames == 1
- && !TREE_PUBLIC (decl) && DECL_CONTEXT (decl)
- && TREE_CODE (DECL_CONTEXT (decl)) == TRANSLATION_UNIT_DECL)
- SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl));
- else
- lhd_set_decl_assembler_name (decl);
+ enum rid i;
+ bool dupe = false;
+ specs->non_sc_seen_p = true;
+ gcc_assert (TREE_CODE (qual) == IDENTIFIER_NODE
+ && C_IS_RESERVED_WORD (qual));
+ i = C_RID_CODE (qual);
+ switch (i)
+ {
+ case RID_CONST:
+ dupe = specs->const_p;
+ specs->const_p = true;
+ break;
+ case RID_VOLATILE:
+ dupe = specs->volatile_p;
+ specs->volatile_p = true;
+ break;
+ case RID_RESTRICT:
+ dupe = specs->restrict_p;
+ specs->restrict_p = true;
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ if (dupe && pedantic && !flag_isoc99)
+ pedwarn ("duplicate %qs", IDENTIFIER_POINTER (qual));
+ return specs;
+}
+
+/* Add the type specifier TYPE to the declaration specifiers SPECS,
+ returning SPECS. */
+
+struct c_declspecs *
+declspecs_add_type (struct c_declspecs *specs, tree type)
+{
+ specs->non_sc_seen_p = true;
+ if (TREE_DEPRECATED (type))
+ specs->deprecated_p = true;
+
+ /* Handle type specifier keywords. */
+ if (TREE_CODE (type) == IDENTIFIER_NODE && C_IS_RESERVED_WORD (type))
+ {
+ enum rid i = C_RID_CODE (type);
+ if (specs->type)
+ {
+ error ("two or more data types in declaration specifiers");
+ return specs;
+ }
+ if ((int) i <= (int) RID_LAST_MODIFIER)
+ {
+ /* "long", "short", "signed", "unsigned" or "_Complex". */
+ bool dupe = false;
+ switch (i)
+ {
+ case RID_LONG:
+ if (specs->long_long_p)
+ {
+ error ("%<long long long%> is too long for GCC");
+ break;
+ }
+ if (specs->long_p)
+ {
+ if (specs->typespec_word == cts_double)
+ {
+ error ("both %<long long%> and %<double%> in "
+ "declaration specifiers");
+ break;
+ }
+ if (pedantic && !flag_isoc99 && !in_system_header
+ && warn_long_long)
+ pedwarn ("ISO C90 does not support %<long long%>");
+ specs->long_long_p = 1;
+ break;
+ }
+ if (specs->short_p)
+ error ("both %<long%> and %<short%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_void)
+ error ("both %<long%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_bool)
+ error ("both %<long%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_char)
+ error ("both %<long%> and %<char%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_float)
+ error ("both %<long%> and %<float%> in "
+ "declaration specifiers");
+ else
+ specs->long_p = true;
+ break;
+ case RID_SHORT:
+ dupe = specs->short_p;
+ if (specs->long_p)
+ error ("both %<long%> and %<short%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_void)
+ error ("both %<short%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_bool)
+ error ("both %<short%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_char)
+ error ("both %<short%> and %<char%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_float)
+ error ("both %<short%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_double)
+ error ("both %<short%> and %<double%> in "
+ "declaration specifiers");
+ else
+ specs->short_p = true;
+ break;
+ case RID_SIGNED:
+ dupe = specs->signed_p;
+ if (specs->unsigned_p)
+ error ("both %<signed%> and %<unsigned%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_void)
+ error ("both %<signed%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_bool)
+ error ("both %<signed%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_float)
+ error ("both %<signed%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_double)
+ error ("both %<signed%> and %<double%> in "
+ "declaration specifiers");
+ else
+ specs->signed_p = true;
+ break;
+ case RID_UNSIGNED:
+ dupe = specs->unsigned_p;
+ if (specs->signed_p)
+ error ("both %<signed%> and %<unsigned%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_void)
+ error ("both %<unsigned%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_bool)
+ error ("both %<unsigned%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_float)
+ error ("both %<unsigned%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_double)
+ error ("both %<unsigned%> and %<double%> in "
+ "declaration specifiers");
+ else
+ specs->unsigned_p = true;
+ break;
+ case RID_COMPLEX:
+ dupe = specs->complex_p;
+ if (pedantic && !flag_isoc99 && !in_system_header)
+ pedwarn ("ISO C90 does not support complex types");
+ if (specs->typespec_word == cts_void)
+ error ("both %<complex%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->typespec_word == cts_bool)
+ error ("both %<complex%> and %<_Bool%> in "
+ "declaration specifiers");
+ else
+ specs->complex_p = true;
+ break;
+ default:
+ gcc_unreachable ();
+ }
+
+ if (dupe)
+ error ("duplicate %qs", IDENTIFIER_POINTER (type));
+
+ return specs;
+ }
+ else
+ {
+ /* "void", "_Bool", "char", "int", "float" or "double". */
+ if (specs->typespec_word != cts_none)
+ {
+ error ("two or more data types in declaration specifiers");
+ return specs;
+ }
+ switch (i)
+ {
+ case RID_VOID:
+ if (specs->long_p)
+ error ("both %<long%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->short_p)
+ error ("both %<short%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->signed_p)
+ error ("both %<signed%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->unsigned_p)
+ error ("both %<unsigned%> and %<void%> in "
+ "declaration specifiers");
+ else if (specs->complex_p)
+ error ("both %<complex%> and %<void%> in "
+ "declaration specifiers");
+ else
+ specs->typespec_word = cts_void;
+ return specs;
+ case RID_BOOL:
+ if (specs->long_p)
+ error ("both %<long%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->short_p)
+ error ("both %<short%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->signed_p)
+ error ("both %<signed%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->unsigned_p)
+ error ("both %<unsigned%> and %<_Bool%> in "
+ "declaration specifiers");
+ else if (specs->complex_p)
+ error ("both %<complex%> and %<_Bool%> in "
+ "declaration specifiers");
+ else
+ specs->typespec_word = cts_bool;
+ return specs;
+ case RID_CHAR:
+ if (specs->long_p)
+ error ("both %<long%> and %<char%> in "
+ "declaration specifiers");
+ else if (specs->short_p)
+ error ("both %<short%> and %<char%> in "
+ "declaration specifiers");
+ else
+ specs->typespec_word = cts_char;
+ return specs;
+ case RID_INT:
+ specs->typespec_word = cts_int;
+ return specs;
+ case RID_FLOAT:
+ if (specs->long_p)
+ error ("both %<long%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->short_p)
+ error ("both %<short%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->signed_p)
+ error ("both %<signed%> and %<float%> in "
+ "declaration specifiers");
+ else if (specs->unsigned_p)
+ error ("both %<unsigned%> and %<float%> in "
+ "declaration specifiers");
+ else
+ specs->typespec_word = cts_float;
+ return specs;
+ case RID_DOUBLE:
+ if (specs->long_long_p)
+ error ("both %<long long%> and %<double%> in "
+ "declaration specifiers");
+ else if (specs->short_p)
+ error ("both %<short%> and %<double%> in "
+ "declaration specifiers");
+ else if (specs->signed_p)
+ error ("both %<signed%> and %<double%> in "
+ "declaration specifiers");
+ else if (specs->unsigned_p)
+ error ("both %<unsigned%> and %<double%> in "
+ "declaration specifiers");
+ else
+ specs->typespec_word = cts_double;
+ return specs;
+ default:
+ /* ObjC reserved word "id", handled below. */
+ break;
+ }
+ }
+ }
+
+ /* Now we have a typedef (a TYPE_DECL node), an identifier (some
+ form of ObjC type, cases such as "int" and "long" being handled
+ above), a TYPE (struct, union, enum and typeof specifiers) or an
+ ERROR_MARK. In none of these cases may there have previously
+ been any type specifiers. */
+ if (specs->type || specs->typespec_word != cts_none
+ || specs->long_p || specs->short_p || specs->signed_p
+ || specs->unsigned_p || specs->complex_p)
+ error ("two or more data types in declaration specifiers");
+ else if (TREE_CODE (type) == TYPE_DECL)
+ {
+ if (TREE_TYPE (type) == error_mark_node)
+ ; /* Allow the type to default to int to avoid cascading errors. */
+ else
+ {
+ specs->type = TREE_TYPE (type);
+ specs->decl_attr = DECL_ATTRIBUTES (type);
+ specs->typedef_p = true;
+ specs->explicit_signed_p = C_TYPEDEF_EXPLICITLY_SIGNED (type);
+ }
+ }
+ else if (TREE_CODE (type) == IDENTIFIER_NODE)
+ {
+ tree t = lookup_name (type);
+ if (!t || TREE_CODE (t) != TYPE_DECL)
+ error ("%qs fails to be a typedef or built in type",
+ IDENTIFIER_POINTER (type));
+ else if (TREE_TYPE (t) == error_mark_node)
+ ;
+ else
+ specs->type = TREE_TYPE (t);
+ }
+ else if (TREE_CODE (type) != ERROR_MARK)
+ specs->type = type;
+
+ return specs;
+}
+
+/* Add the storage class specifier or function specifier SCSPEC to the
+ declaration specifiers SPECS, returning SPECS. */
+
+struct c_declspecs *
+declspecs_add_scspec (struct c_declspecs *specs, tree scspec)
+{
+ enum rid i;
+ enum c_storage_class n = csc_none;
+ bool dupe = false;
+ gcc_assert (TREE_CODE (scspec) == IDENTIFIER_NODE
+ && C_IS_RESERVED_WORD (scspec));
+ i = C_RID_CODE (scspec);
+ if (extra_warnings && specs->non_sc_seen_p)
+ warning ("%qs is not at beginning of declaration",
+ IDENTIFIER_POINTER (scspec));
+ switch (i)
+ {
+ case RID_INLINE:
+ /* C99 permits duplicate inline. Although of doubtful utility,
+ it seems simplest to permit it in gnu89 mode as well, as
+ there is also little utility in maintaining this as a
+ difference between gnu89 and C99 inline. */
+ dupe = false;
+ specs->inline_p = true;
+ break;
+ case RID_THREAD:
+ dupe = specs->thread_p;
+ if (specs->storage_class == csc_auto)
+ error ("%<__thread%> used with %<auto%>");
+ else if (specs->storage_class == csc_register)
+ error ("%<__thread%> used with %<register%>");
+ else if (specs->storage_class == csc_typedef)
+ error ("%<__thread%> used with %<typedef%>");
+ else
+ specs->thread_p = true;
+ break;
+ case RID_AUTO:
+ n = csc_auto;
+ break;
+ case RID_EXTERN:
+ n = csc_extern;
+ /* Diagnose "__thread extern". */
+ if (specs->thread_p)
+ error ("%<__thread%> before %<extern%>");
+ break;
+ case RID_REGISTER:
+ n = csc_register;
+ break;
+ case RID_STATIC:
+ n = csc_static;
+ /* Diagnose "__thread static". */
+ if (specs->thread_p)
+ error ("%<__thread%> before %<static%>");
+ break;
+ case RID_TYPEDEF:
+ n = csc_typedef;
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ if (n != csc_none && n == specs->storage_class)
+ dupe = true;
+ if (dupe)
+ error ("duplicate %qs", IDENTIFIER_POINTER (scspec));
+ if (n != csc_none)
+ {
+ if (specs->storage_class != csc_none && n != specs->storage_class)
+ {
+ error ("multiple storage classes in declaration specifiers");
+ }
+ else
+ {
+ specs->storage_class = n;
+ if (n != csc_extern && n != csc_static && specs->thread_p)
+ {
+ error ("%<__thread%> used with %qs",
+ IDENTIFIER_POINTER (scspec));
+ specs->thread_p = false;
+ }
+ }
+ }
+ return specs;
+}
+
+/* Add the attributes ATTRS to the declaration specifiers SPECS,
+ returning SPECS. */
+
+struct c_declspecs *
+declspecs_add_attrs (struct c_declspecs *specs, tree attrs)
+{
+ specs->attrs = chainon (attrs, specs->attrs);
+ return specs;
+}
+
+/* Combine "long", "short", "signed", "unsigned" and "_Complex" type
+ specifiers with any other type specifier to determine the resulting
+ type. This is where ISO C checks on complex types are made, since
+ "_Complex long" is a prefix of the valid ISO C type "_Complex long
+ double". */
+
+struct c_declspecs *
+finish_declspecs (struct c_declspecs *specs)
+{
+ /* If a type was specified as a whole, we have no modifiers and are
+ done. */
+ if (specs->type != NULL_TREE)
+ {
+ gcc_assert (!specs->long_p && !specs->long_long_p && !specs->short_p
+ && !specs->signed_p && !specs->unsigned_p
+ && !specs->complex_p);
+ return specs;
+ }
+
+ /* If none of "void", "_Bool", "char", "int", "float" or "double"
+ has been specified, treat it as "int" unless "_Complex" is
+ present and there are no other specifiers. If we just have
+ "_Complex", it is equivalent to "_Complex double", but e.g.
+ "_Complex short" is equivalent to "_Complex short int". */
+ if (specs->typespec_word == cts_none)
+ {
+ if (specs->long_p || specs->short_p
+ || specs->signed_p || specs->unsigned_p)
+ {
+ specs->typespec_word = cts_int;
+ }
+ else if (specs->complex_p)
+ {
+ specs->typespec_word = cts_double;
+ if (pedantic)
+ pedwarn ("ISO C does not support plain %<complex%> meaning "
+ "%<double complex%>");
+ }
+ else
+ {
+ specs->typespec_word = cts_int;
+ specs->default_int_p = true;
+ /* We don't diagnose this here because grokdeclarator will
+ give more specific diagnostics according to whether it is
+ a function definition. */
+ }
+ }
+
+ /* If "signed" was specified, record this to distinguish "int" and
+ "signed int" in the case of a bit-field with
+ -funsigned-bitfields. */
+ specs->explicit_signed_p = specs->signed_p;
+
+ /* Now compute the actual type. */
+ switch (specs->typespec_word)
+ {
+ case cts_void:
+ gcc_assert (!specs->long_p && !specs->short_p
+ && !specs->signed_p && !specs->unsigned_p
+ && !specs->complex_p);
+ specs->type = void_type_node;
+ break;
+ case cts_bool:
+ gcc_assert (!specs->long_p && !specs->short_p
+ && !specs->signed_p && !specs->unsigned_p
+ && !specs->complex_p);
+ specs->type = boolean_type_node;
+ break;
+ case cts_char:
+ gcc_assert (!specs->long_p && !specs->short_p);
+ gcc_assert (!(specs->signed_p && specs->unsigned_p));
+ if (specs->signed_p)
+ specs->type = signed_char_type_node;
+ else if (specs->unsigned_p)
+ specs->type = unsigned_char_type_node;
+ else
+ specs->type = char_type_node;
+ if (specs->complex_p)
+ {
+ if (pedantic)
+ pedwarn ("ISO C does not support complex integer types");
+ specs->type = build_complex_type (specs->type);
+ }
+ break;
+ case cts_int:
+ gcc_assert (!(specs->long_p && specs->short_p));
+ gcc_assert (!(specs->signed_p && specs->unsigned_p));
+ if (specs->long_long_p)
+ specs->type = (specs->unsigned_p
+ ? long_long_unsigned_type_node
+ : long_long_integer_type_node);
+ else if (specs->long_p)
+ specs->type = (specs->unsigned_p
+ ? long_unsigned_type_node
+ : long_integer_type_node);
+ else if (specs->short_p)
+ specs->type = (specs->unsigned_p
+ ? short_unsigned_type_node
+ : short_integer_type_node);
+ else
+ specs->type = (specs->unsigned_p
+ ? unsigned_type_node
+ : integer_type_node);
+ if (specs->complex_p)
+ {
+ if (pedantic)
+ pedwarn ("ISO C does not support complex integer types");
+ specs->type = build_complex_type (specs->type);
+ }
+ break;
+ case cts_float:
+ gcc_assert (!specs->long_p && !specs->short_p
+ && !specs->signed_p && !specs->unsigned_p);
+ specs->type = (specs->complex_p
+ ? complex_float_type_node
+ : float_type_node);
+ break;
+ case cts_double:
+ gcc_assert (!specs->long_long_p && !specs->short_p
+ && !specs->signed_p && !specs->unsigned_p);
+ if (specs->long_p)
+ {
+ specs->type = (specs->complex_p
+ ? complex_long_double_type_node
+ : long_double_type_node);
+ }
+ else
+ {
+ specs->type = (specs->complex_p
+ ? complex_double_type_node
+ : double_type_node);
+ }
+ break;
+ default:
+ gcc_unreachable ();
+ }
+
+ return specs;
+}
+
+/* Synthesize a function which calls all the global ctors or global
+ dtors in this file. This is only used for targets which do not
+ support .ctors/.dtors sections. FIXME: Migrate into cgraph. */
+static void
+build_cdtor (int method_type, tree cdtors)
+{
+ tree body = 0;
+
+ if (!cdtors)
+ return;
+
+ for (; cdtors; cdtors = TREE_CHAIN (cdtors))
+ append_to_statement_list (build_function_call (TREE_VALUE (cdtors), 0),
+ &body);
+
+ cgraph_build_static_cdtor (method_type, body, DEFAULT_INIT_PRIORITY);
}
-/* Perform final processing on file-scope data. */
+/* Perform final processing on one file scope's declarations (or the
+ external scope's declarations), GLOBALS. */
static void
c_write_global_declarations_1 (tree globals)
{
size_t len = list_length (globals);
- tree *vec = xmalloc (sizeof (tree) * len);
+ tree *vec = XNEWVEC (tree, len);
size_t i;
tree decl;
-
+
/* Process the decls in the order they were written. */
for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
- vec[i] = decl;
+ {
+ vec[i] = decl;
+ /* Check for used but undefined static functions using the C
+ standard's definition of "used", and set TREE_NO_WARNING so
+ that check_global_declarations doesn't repeat the check. */
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ && DECL_INITIAL (decl) == 0
+ && DECL_EXTERNAL (decl)
+ && !TREE_PUBLIC (decl)
+ && C_DECL_USED (decl))
+ {
+ pedwarn ("%J%qF used but never defined", decl, decl);
+ TREE_NO_WARNING (decl) = 1;
+ }
+ }
wrapup_global_declarations (vec, len);
check_global_declarations (vec, len);
-
+
free (vec);
}
void
c_write_global_declarations (void)
{
- tree t;
+ tree ext_block, t;
/* We don't want to do this if generating a PCH. */
if (pch_file)
return;
- /* Process all file scopes in this compilation. */
+ /* Don't waste time on further processing if -fsyntax-only or we've
+ encountered errors. */
+ if (flag_syntax_only || errorcount || sorrycount || cpp_errors (parse_in))
+ return;
+
+ /* Close the external scope. */
+ ext_block = pop_scope ();
+ external_scope = 0;
+ gcc_assert (!current_scope);
+
+ /* Process all file scopes in this compilation, and the external_scope,
+ through wrapup_global_declarations and check_global_declarations. */
for (t = all_translation_units; t; t = TREE_CHAIN (t))
c_write_global_declarations_1 (BLOCK_VARS (DECL_INITIAL (t)));
+ c_write_global_declarations_1 (BLOCK_VARS (ext_block));
+
+ /* Generate functions to call static constructors and destructors
+ for targets that do not support .ctors/.dtors sections. These
+ functions have magic names which are detected by collect2. */
+ build_cdtor ('I', static_ctors); static_ctors = 0;
+ build_cdtor ('D', static_dtors); static_dtors = 0;
- /* Now do the same for the externals scope. */
- t = pop_scope ();
- if (t)
- c_write_global_declarations_1 (BLOCK_VARS (t));
+ /* We're done parsing; proceed to optimize and emit assembly.
+ FIXME: shouldn't be the front end's responsibility to call this. */
+ cgraph_optimize ();
}
#include "gt-c-decl.h"
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