#include "tree-iterator.h"
#include "hashtab.h"
#include "tree-mudflap.h"
+#include "opts.h"
cpp_reader *parse_in; /* Declared in c-pragma.h. */
unit. It will inform the ObjC runtime that class definition(s) herein
contained are to replace one(s) previously loaded. */
int flag_replace_objc_classes = 0;
-
+
/* C/ObjC language option variables. */
int flag_enforce_eh_specs = 1;
+/* Nonzero means to generate thread-safe code for initializing local
+ statics. */
+
+int flag_threadsafe_statics = 1;
+
/* Nonzero means warn about implicit declarations. */
int warn_implicit = 1;
static tree handle_cleanup_attribute (tree *, tree, tree, int, bool *);
static tree handle_warn_unused_result_attribute (tree *, tree, tree, int,
bool *);
+static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
static void check_function_nonnull (tree, tree);
static void check_nonnull_arg (void *, tree, unsigned HOST_WIDE_INT);
handle_deprecated_attribute },
{ "vector_size", 1, 1, false, true, false,
handle_vector_size_attribute },
- { "visibility", 1, 1, true, false, false,
+ { "visibility", 1, 1, false, false, false,
handle_visibility_attribute },
{ "tls_model", 1, 1, true, false, false,
handle_tls_model_attribute },
handle_cleanup_attribute },
{ "warn_unused_result", 0, 0, false, true, true,
handle_warn_unused_result_attribute },
+ { "sentinel", 0, 1, false, true, true,
+ handle_sentinel_attribute },
{ NULL, 0, 0, false, false, false, NULL }
};
if (decl)
{
- saved = tree_cons (decl, build_int_2 (ix, 0), saved);
+ saved = tree_cons (decl, build_int_cst (NULL_TREE, ix), saved);
*fname_vars[ix].decl = NULL_TREE;
}
}
char *namep;
int vrb = 2;
- if (! pretty_p)
+ if (!pretty_p)
{
name = "";
vrb = 0;
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);
else
return 0;
input_location = saved_location;
}
if (!ix && !current_function_decl)
- pedwarn ("%J'%D' is not defined outside of function scope", decl, decl);
+ pedwarn ("%J%qD is not defined outside of function scope", decl, decl);
return decl;
}
const int nchars_max = flag_isoc99 ? 4095 : 509;
int length = TREE_STRING_LENGTH (value);
int nchars;
+ tree e_type, i_type, a_type;
/* Compute the number of elements, for the array type. */
nchars = wide_flag ? length / wchar_bytes : length;
if (pedantic && nchars - 1 > nchars_max && !c_dialect_cxx ())
- pedwarn ("string length `%d' is greater than the length `%d' ISO C%d compilers are required to support",
+ pedwarn ("string length %qd is greater than the length %qd ISO C%d compilers are required to support",
nchars - 1, nchars_max, flag_isoc99 ? 99 : 89);
- /* Create the array type for the string constant.
- -Wwrite-strings says make the string constant an array of const char
- so that copying it to a non-const pointer will get a warning.
- For C++, this is the standard behavior. */
+ e_type = wide_flag ? wchar_type_node : char_type_node;
+ /* Create the array type for the string constant. flag_const_strings
+ says make the string constant an array of const char so that
+ copying it to a non-const pointer will get a warning. For C++,
+ this is the standard behavior.
+
+ The C++ front end relies on TYPE_MAIN_VARIANT of a cv-qualified
+ array type being the unqualified version of that type.
+ Therefore, if we are constructing an array of const char, we must
+ construct the matching unqualified array type first. The C front
+ end does not require this, but it does no harm, so we do it
+ unconditionally. */
+ i_type = build_index_type (build_int_cst (NULL_TREE, nchars - 1));
+ a_type = build_array_type (e_type, i_type);
if (flag_const_strings)
{
- tree elements
- = build_type_variant (wide_flag ? wchar_type_node : char_type_node,
- 1, 0);
- TREE_TYPE (value)
- = build_array_type (elements,
- build_index_type (build_int_2 (nchars - 1, 0)));
+ /* bleah, c_build_qualified_type should set TYPE_MAIN_VARIANT. */
+ tree qa_type = c_build_qualified_type (a_type, TYPE_QUAL_CONST);
+ TYPE_MAIN_VARIANT (qa_type) = a_type;
+ a_type = qa_type;
}
- else
- TREE_TYPE (value)
- = build_array_type (wide_flag ? wchar_type_node : char_type_node,
- build_index_type (build_int_2 (nchars - 1, 0)));
+ TREE_TYPE (value) = a_type;
TREE_CONSTANT (value) = 1;
TREE_INVARIANT (value) = 1;
TREE_READONLY (value) = 1;
don't warn unless pedantic. */
if ((pedantic
|| TYPE_UNSIGNED (type)
- || ! constant_fits_type_p (expr,
- c_common_unsigned_type (type)))
+ || !constant_fits_type_p (expr,
+ c_common_unsigned_type (type)))
&& skip_evaluation == 0)
warning ("overflow in implicit constant conversion");
}
while (add)
{
struct tlist *next = add->next;
- if (! copy)
+ if (!copy)
add->next = *to;
- if (! exclude_writer || add->writer != exclude_writer)
+ if (!exclude_writer || add->writer != exclude_writer)
*to = copy ? new_tlist (*to, add->expr, add->writer) : add;
add = next;
}
if (tmp2->expr == add->expr)
{
found = 1;
- if (! tmp2->writer)
+ if (!tmp2->writer)
tmp2->writer = add->writer;
}
- if (! found)
+ if (!found)
{
*end = copy ? add : new_tlist (NULL, add->expr, add->writer);
end = &(*end)->next;
{
if (list->expr == written
&& list->writer != writer
- && (! only_writes || list->writer)
+ && (!only_writes || list->writer)
&& DECL_NAME (list->expr))
{
warned_ids = new_tlist (warned_ids, written, NULL_TREE);
- warning ("operation on `%s' may be undefined",
+ warning ("operation on %qs may be undefined",
IDENTIFIER_POINTER (DECL_NAME (list->expr)));
}
list = list->next;
{
struct tlist *tmp_before, *tmp_nosp, *tmp_list2, *tmp_list3;
enum tree_code code;
- char cl;
+ enum tree_code_class cl;
/* X may be NULL if it is the operand of an empty statement expression
({ }). */
if (t->expr == x)
break;
- if (! t)
+ if (!t)
{
t = XOBNEW (&tlist_obstack, struct tlist_cache);
t->next = save_expr_cache;
add_tlist (pno_sp, t->cache_after_sp, NULL_TREE, 1);
return;
}
- default:
- break;
- }
- if (cl == '1')
- {
- if (first_rtl_op (code) == 0)
- return;
- x = TREE_OPERAND (x, 0);
- writer = 0;
- goto restart;
- }
-
- switch (cl)
- {
- case 'r':
- case '<':
- case '2':
- case 'e':
- case 's':
- case 'x':
- {
- int lp;
- int max = first_rtl_op (TREE_CODE (x));
- for (lp = 0; lp < max; lp++)
- {
- tmp_before = tmp_nosp = 0;
- verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, NULL_TREE);
- merge_tlist (&tmp_nosp, tmp_before, 0);
- add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
- }
- break;
- }
+ default:
+ /* For other expressions, simply recurse on their operands.
+ Manual tail recursion for unary expressions.
+ Other non-expressions need not be processed. */
+ if (cl == tcc_unary)
+ {
+ if (first_rtl_op (code) == 0)
+ return;
+ x = TREE_OPERAND (x, 0);
+ writer = 0;
+ goto restart;
+ }
+ else if (IS_EXPR_CODE_CLASS (cl))
+ {
+ int lp;
+ int max = first_rtl_op (TREE_CODE (x));
+ for (lp = 0; lp < max; lp++)
+ {
+ tmp_before = tmp_nosp = 0;
+ verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, 0);
+ merge_tlist (&tmp_nosp, tmp_before, 0);
+ add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
+ }
+ }
+ return;
}
}
}
\f
/* See if the case values LOW and HIGH are in the range of the original
- type (ie. before the default conversion to int) of the switch testing
+ type (i.e. before the default conversion to int) of the switch testing
expression.
TYPE is the promoted type of the testing expression, and ORIG_TYPE is
- the type before promiting it. CASE_LOW_P is a pointer to the lower
+ the type before promoting it. CASE_LOW_P is a pointer to the lower
bound of the case label, and CASE_HIGH_P is the upper bound or NULL
if the case is not a case range.
The caller has to make sure that we are not called with NULL for
- CASE_LOW_P (ie. the defualt case).
+ CASE_LOW_P (i.e. the default case).
Returns true if the case label is in range of ORIG_TYPE (satured or
untouched) or false if the label is out of range. */
warning ("case label value is less than minimum value for type");
return false;
}
-
+
/* Case value is greater than maximum for type. */
if (tree_int_cst_compare (case_low, max_value) > 0
&& tree_int_cst_compare (case_high, max_value) > 0)
" less than minimum value for type");
case_low = min_value;
}
-
+
/* Saturate upper case label value to maximum. */
if (tree_int_cst_compare (case_low, max_value) <= 0
&& tree_int_cst_compare (case_high, max_value) > 0)
if (mode == TYPE_MODE (void_type_node))
return void_type_node;
-
+
if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
return unsignedp ? make_unsigned_type (mode) : make_signed_type (mode);
tree
c_common_signed_or_unsigned_type (int unsignedp, tree type)
{
- if (! INTEGRAL_TYPE_P (type)
+ if (!INTEGRAL_TYPE_P (type)
|| TYPE_UNSIGNED (type) == unsignedp)
return type;
else
log = tree_floor_log2 (value);
- return log + 1 + ! unsignedp;
+ return log + 1 + !unsignedp;
}
\f
/* Print an error message for invalid operands to arith operation
the second arg is 0. */
if (TREE_CONSTANT (primop0)
- && ! integer_zerop (primop1) && ! real_zerop (primop1))
+ && !integer_zerop (primop1) && !real_zerop (primop1))
{
tree tem = primop0;
int temi = unsignedp0;
enumerated type itself. In C++, TYPE_MAX_VALUE and
TYPE_MIN_VALUE have already been set correctly on the
enumeration type. */
- if (!c_dialect_cxx() && TREE_CODE (type) == ENUMERAL_TYPE)
+ if (!c_dialect_cxx () && TREE_CODE (type) == ENUMERAL_TYPE)
type = c_common_type_for_size (TYPE_PRECISION (type), unsignedp0);
maxval = TYPE_MAX_VALUE (type);
if (TREE_TYPE (primop1) != *restype_ptr)
{
- tree tmp = convert (*restype_ptr, primop1);
- TREE_OVERFLOW (tmp) = TREE_OVERFLOW (primop1);
- TREE_CONSTANT_OVERFLOW (tmp) = TREE_CONSTANT_OVERFLOW (primop1);
- primop1 = tmp;
+ /* Convert primop1 to target type, but do not introduce
+ additional overflow. We know primop1 is an int_cst. */
+ tree tmp = build_int_cst_wide (*restype_ptr,
+ TREE_INT_CST_LOW (primop1),
+ TREE_INT_CST_HIGH (primop1));
+
+ primop1 = force_fit_type (tmp, 0, TREE_OVERFLOW (primop1),
+ TREE_CONSTANT_OVERFLOW (primop1));
}
if (type != *restype_ptr)
{
{
/* Don't forget to evaluate PRIMOP0 if it has side effects. */
if (TREE_SIDE_EFFECTS (primop0))
- return build (COMPOUND_EXPR, TREE_TYPE (val), primop0, val);
+ return build2 (COMPOUND_EXPR, TREE_TYPE (val), primop0, val);
return val;
}
>= 0, the signedness of the comparison isn't an issue,
so suppress the warning. */
if (extra_warnings && !in_system_header
- && ! (TREE_CODE (primop0) == INTEGER_CST
- && ! TREE_OVERFLOW (convert (c_common_signed_type (type),
- primop0))))
+ && !(TREE_CODE (primop0) == INTEGER_CST
+ && !TREE_OVERFLOW (convert (c_common_signed_type (type),
+ primop0))))
warning ("comparison of unsigned expression >= 0 is always true");
value = truthvalue_true_node;
break;
case LT_EXPR:
if (extra_warnings && !in_system_header
- && ! (TREE_CODE (primop0) == INTEGER_CST
- && ! TREE_OVERFLOW (convert (c_common_signed_type (type),
- primop0))))
+ && !(TREE_CODE (primop0) == INTEGER_CST
+ && !TREE_OVERFLOW (convert (c_common_signed_type (type),
+ primop0))))
warning ("comparison of unsigned expression < 0 is always false");
value = truthvalue_false_node;
break;
{
/* Don't forget to evaluate PRIMOP0 if it has side effects. */
if (TREE_SIDE_EFFECTS (primop0))
- return build (COMPOUND_EXPR, TREE_TYPE (value),
- primop0, value);
+ return build2 (COMPOUND_EXPR, TREE_TYPE (value),
+ primop0, value);
return value;
}
}
if (TREE_CODE (TREE_TYPE (result_type)) == VOID_TYPE)
{
if (pedantic || warn_pointer_arith)
- pedwarn ("pointer of type `void *' used in arithmetic");
+ pedwarn ("pointer of type %<void *%> used in arithmetic");
size_exp = integer_one_node;
}
else if (TREE_CODE (TREE_TYPE (result_type)) == FUNCTION_TYPE)
This helps produce common subexpressions. */
if ((TREE_CODE (intop) == PLUS_EXPR || TREE_CODE (intop) == MINUS_EXPR)
- && ! TREE_CONSTANT (intop)
+ && !TREE_CONSTANT (intop)
&& TREE_CONSTANT (TREE_OPERAND (intop, 1))
&& TREE_CONSTANT (size_exp)
/* If the constant comes from pointer subtraction,
/* If the constant is unsigned, and smaller than the pointer size,
then we must skip this optimization. This is because it could cause
an overflow error if the constant is negative but INTOP is not. */
- && (! TYPE_UNSIGNED (TREE_TYPE (intop))
+ && (!TYPE_UNSIGNED (TREE_TYPE (intop))
|| (TYPE_PRECISION (TREE_TYPE (intop))
== TYPE_PRECISION (TREE_TYPE (ptrop)))))
{
convert (TREE_TYPE (intop), size_exp), 1));
/* Create the sum or difference. */
- return fold (build (resultcode, result_type, ptrop, intop));
+ return fold (build2 (resultcode, result_type, ptrop, intop));
}
\f
/* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
case ADDR_EXPR:
{
if (TREE_CODE (TREE_OPERAND (expr, 0)) == FUNCTION_DECL
- && ! DECL_WEAK (TREE_OPERAND (expr, 0)))
+ && !DECL_WEAK (TREE_OPERAND (expr, 0)))
{
/* Common Ada/Pascal programmer's mistake. We always warn
about this since it is so bad. */
- warning ("the address of `%D', will always evaluate as `true'",
+ warning ("the address of %qD, will always evaluate as %<true%>",
TREE_OPERAND (expr, 0));
return truthvalue_true_node;
}
break;
if (TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 0)))
- return build (COMPOUND_EXPR, truthvalue_type_node,
- TREE_OPERAND (expr, 0), truthvalue_true_node);
+ return build2 (COMPOUND_EXPR, truthvalue_type_node,
+ TREE_OPERAND (expr, 0), truthvalue_true_node);
else
return truthvalue_true_node;
}
/* These don't change whether an object is zero or nonzero, but
we can't ignore them if their second arg has side-effects. */
if (TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 1)))
- return build (COMPOUND_EXPR, truthvalue_type_node, TREE_OPERAND (expr, 1),
- lang_hooks.truthvalue_conversion (TREE_OPERAND (expr, 0)));
+ return build2 (COMPOUND_EXPR, truthvalue_type_node,
+ TREE_OPERAND (expr, 1),
+ lang_hooks.truthvalue_conversion (TREE_OPERAND (expr, 0)));
else
return lang_hooks.truthvalue_conversion (TREE_OPERAND (expr, 0));
case COND_EXPR:
/* Distribute the conversion into the arms of a COND_EXPR. */
- return fold (build (COND_EXPR, truthvalue_type_node, TREE_OPERAND (expr, 0),
+ return fold (build3 (COND_EXPR, truthvalue_type_node,
+ TREE_OPERAND (expr, 0),
lang_hooks.truthvalue_conversion (TREE_OPERAND (expr, 1)),
lang_hooks.truthvalue_conversion (TREE_OPERAND (expr, 2))));
{
if (type == error_mark_node)
return type;
-
+
if (TREE_CODE (type) == ARRAY_TYPE)
return build_array_type (c_build_qualified_type (TREE_TYPE (type),
type_quals),
&& (!POINTER_TYPE_P (type)
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (type))))
{
- error ("invalid use of `restrict'");
+ error ("invalid use of %<restrict%>");
type_quals &= ~TYPE_QUAL_RESTRICT;
}
c_apply_type_quals_to_decl (int type_quals, tree decl)
{
tree type = TREE_TYPE (decl);
-
+
if (type == error_mark_node)
return;
if (!type
|| !POINTER_TYPE_P (type)
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (type)))
- error ("invalid use of `restrict'");
+ error ("invalid use of %<restrict%>");
else if (flag_strict_aliasing && type == TREE_TYPE (decl))
/* Indicate we need to make a unique alias set for this pointer.
We can't do it here because it might be pointing to an
{
int i = 0;
int shift, size;
- tree t = (tree)p;
+ tree t = (tree) p;
tree t2;
switch (TREE_CODE (t))
{
- /* For pointers, hash on pointee type plus some swizzling. */
+ /* For pointers, hash on pointee type plus some swizzling. */
case POINTER_TYPE:
return c_type_hash (TREE_TYPE (t)) ^ 0x3003003;
/* Hash on number of elements and total size. */
t2 = TYPE_FIELDS (t);
break;
default:
- abort ();
+ gcc_unreachable ();
}
for (; t2; t2 = TREE_CHAIN (t2))
i++;
return ((size << 24) | (i << shift));
}
+static GTY((param_is (union tree_node))) htab_t type_hash_table;
+
/* Return the typed-based alias set for T, which may be an expression
or a type. Return -1 if we don't do anything special. */
{
tree u;
PTR *slot;
- static htab_t type_hash_table;
/* Permit type-punning when accessing a union, provided the access
is directly through the union. For example, this code does not
return 0;
/* That's all the expressions we handle specially. */
- if (! TYPE_P (t))
+ if (!TYPE_P (t))
return -1;
/* The C standard guarantees that any object may be accessed via an
return -1;
/* Save time if there's only one input file. */
- if (!current_file_decl || TREE_CHAIN (current_file_decl) == NULL_TREE)
+ if (num_in_fnames == 1)
return -1;
/* Pointers need special handling if they point to any type that
{
tree t2;
/* Find bottom type under any nested POINTERs. */
- for (t2 = TREE_TYPE (t);
+ for (t2 = TREE_TYPE (t);
TREE_CODE (t2) == POINTER_TYPE;
t2 = TREE_TYPE (t2))
;
- if (TREE_CODE (t2) != RECORD_TYPE
+ if (TREE_CODE (t2) != RECORD_TYPE
&& TREE_CODE (t2) != ENUMERAL_TYPE
&& TREE_CODE (t2) != QUAL_UNION_TYPE
&& TREE_CODE (t2) != UNION_TYPE)
return -1;
}
/* These are the only cases that need special handling. */
- if (TREE_CODE (t) != RECORD_TYPE
+ if (TREE_CODE (t) != RECORD_TYPE
&& TREE_CODE (t) != ENUMERAL_TYPE
&& TREE_CODE (t) != QUAL_UNION_TYPE
&& TREE_CODE (t) != UNION_TYPE
if (TYPE_SIZE (t) == 0)
return -1;
- /* Look up t in hash table. Only one of the compatible types within each
+ /* Look up t in hash table. Only one of the compatible types within each
alias set is recorded in the table. */
if (!type_hash_table)
- type_hash_table = htab_create (1021, c_type_hash,
+ type_hash_table = htab_create_ggc (1021, c_type_hash,
(htab_eq) lang_hooks.types_compatible_p,
NULL);
slot = htab_find_slot (type_hash_table, t, INSERT);
if (*slot != NULL)
- return TYPE_ALIAS_SET ((tree)*slot);
+ {
+ TYPE_ALIAS_SET (t) = TYPE_ALIAS_SET ((tree)*slot);
+ return TYPE_ALIAS_SET ((tree)*slot);
+ }
else
/* Our caller will assign and record (in t) a new alias set; all we need
to do is remember t in the hash table. */
tree value = NULL;
enum tree_code type_code = TREE_CODE (type);
- my_friendly_assert (op == SIZEOF_EXPR || op == ALIGNOF_EXPR, 20020720);
+ gcc_assert (op == SIZEOF_EXPR || op == ALIGNOF_EXPR);
op_name = op == SIZEOF_EXPR ? "sizeof" : "__alignof__";
if (type_code == FUNCTION_TYPE)
if (op == SIZEOF_EXPR)
{
if (complain && (pedantic || warn_pointer_arith))
- pedwarn ("invalid application of `sizeof' to a function type");
+ pedwarn ("invalid application of %<sizeof%> to a function type");
value = size_one_node;
}
else
{
if (type_code == VOID_TYPE
&& complain && (pedantic || warn_pointer_arith))
- pedwarn ("invalid application of `%s' to a void type", op_name);
+ pedwarn ("invalid application of %qs to a void type", op_name);
value = size_one_node;
}
else if (!COMPLETE_TYPE_P (type))
{
if (complain)
- error ("invalid application of `%s' to incomplete type `%T' ",
+ error ("invalid application of %qs to incomplete type %qT ",
op_name, type);
value = size_zero_node;
}
size_int (TYPE_PRECISION (char_type_node)
/ BITS_PER_UNIT));
else
- value = size_int (TYPE_ALIGN (type) / BITS_PER_UNIT);
+ value = size_int (TYPE_ALIGN_UNIT (type));
}
/* VALUE will have an integer type with TYPE_IS_SIZETYPE set.
never happen. However, this node should really have type
`size_t', which is just a typedef for an ordinary integer type. */
value = fold (build1 (NOP_EXPR, size_type_node, value));
- my_friendly_assert (!TYPE_IS_SIZETYPE (TREE_TYPE (value)), 20001021);
+ gcc_assert (!TYPE_IS_SIZETYPE (TREE_TYPE (value)));
return value;
}
tree t;
if (TREE_CODE (expr) == VAR_DECL)
- t = size_int (DECL_ALIGN (expr) / BITS_PER_UNIT);
+ t = size_int (DECL_ALIGN_UNIT (expr));
else if (TREE_CODE (expr) == COMPONENT_REF
&& DECL_C_BIT_FIELD (TREE_OPERAND (expr, 1)))
{
- error ("`__alignof' applied to a bit-field");
+ error ("%<__alignof%> applied to a bit-field");
t = size_one_node;
}
else if (TREE_CODE (expr) == COMPONENT_REF
&& TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL)
- t = size_int (DECL_ALIGN (TREE_OPERAND (expr, 1)) / BITS_PER_UNIT);
+ t = size_int (DECL_ALIGN_UNIT (TREE_OPERAND (expr, 1)));
else if (TREE_CODE (expr) == INDIRECT_REF)
{
if (c_dialect_cxx ())
/* For C++, make fileptr_type_node a distinct void * type until
FILE type is defined. */
- fileptr_type_node = build_type_copy (ptr_type_node);
+ fileptr_type_node = build_variant_type_copy (ptr_type_node);
record_builtin_type (RID_VOID, NULL, void_type_node);
- void_zero_node = build_int_2 (0, 0);
+ /* This node must not be shared. */
+ void_zero_node = make_node (INTEGER_CST);
TREE_TYPE (void_zero_node) = void_type_node;
void_list_node = build_void_list_node ();
{ \
tree decl; \
\
- if (strncmp (NAME, "__builtin_", strlen ("__builtin_")) != 0) \
- abort (); \
+ gcc_assert (!strncmp (NAME, "__builtin_", \
+ strlen ("__builtin_"))); \
\
if (!BOTH_P) \
decl = lang_hooks.builtin_function (NAME, builtin_types[TYPE], \
disable_builtin_function (const char *name)
{
if (strncmp (name, "__builtin_", strlen ("__builtin_")) == 0)
- error ("cannot disable built-in function `%s'", name);
+ error ("cannot disable built-in function %qs", name);
else
{
- disabled_builtin *n = XNEW (disabled_builtin);
- n->name = name;
- n->next = disabled_builtins;
- disabled_builtins = n;
+ disabled_builtin *new_disabled_builtin = XNEW (disabled_builtin);
+ new_disabled_builtin->name = name;
+ new_disabled_builtin->next = disabled_builtins;
+ disabled_builtins = new_disabled_builtin;
}
}
expression. If both low_value and high_value are out of range,
don't insert the case label and return NULL_TREE. */
if (low_value
- && ! check_case_bounds (type, orig_type,
- &low_value, high_value ? &high_value : NULL))
+ && !check_case_bounds (type, orig_type,
+ &low_value, high_value ? &high_value : NULL))
return NULL_TREE;
/* Look up the LOW_VALUE in the table of case labels we already
TREE_INT_CST_HIGH (key), TREE_INT_CST_LOW (key));
if (TYPE_NAME (type) == 0)
- warning ("%Jcase value `%s' not in enumerated type",
+ warning ("%Jcase value %qs not in enumerated type",
CASE_LABEL (label), buf);
else
- warning ("%Jcase value `%s' not in enumerated type `%T'",
+ warning ("%Jcase value %qs not in enumerated type %qT",
CASE_LABEL (label), buf, type);
}
void
c_do_switch_warnings (splay_tree cases, tree switch_stmt)
{
- splay_tree_node default_node;
+ splay_tree_node default_node;
location_t switch_location;
tree type;
tree chain;
/* The time complexity here is O(N*lg(N)) worst case, but for the
- common case of monotonically increasing enumerators, it is
+ common case of monotonically increasing enumerators, it is
O(N), since the nature of the splay tree will keep the next
element adjacent to the root at all times. */
if (node)
{
/* Mark the CASE_LOW part of the case entry as seen, so
- that we save time later. Choose TREE_ADDRESSABLE
+ that we save time later. Choose TREE_ADDRESSABLE
randomly as a bit that won't have been set to-date. */
tree label = (tree) node->value;
TREE_ADDRESSABLE (label) = 1;
{
/* Warn if there are enumerators that don't correspond to
case expressions. */
- warning ("%Henumeration value `%E' not handled in switch",
+ warning ("%Henumeration value %qE not handled in switch",
&switch_location, TREE_PURPOSE (chain));
}
}
The time complexity here is O(N**2) worst case, since we've
not sorted the enumeration values. However, in the absence
- of case ranges this is O(N), since all single cases that
+ of case ranges this is O(N), since all single cases that
corresponded to enumerations have been marked above. */
splay_tree_foreach (cases, match_case_to_enum, type);
}
/* Hook used by expand_expr to expand language-specific tree codes. */
-/* The only things that should go here are bits needed to expand
+/* The only things that should go here are bits needed to expand
constant initializers. Everything else should be handled by the
gimplification routines. */
rtx
-c_expand_expr (tree exp, rtx target, enum machine_mode tmode,
+c_expand_expr (tree exp, rtx target, enum machine_mode tmode,
int modifier /* Actually enum_modifier. */,
rtx *alt_rtl)
{
}
default:
- abort ();
+ gcc_unreachable ();
}
}
-/* Hook used by unsafe_for_reeval to handle language-specific tree codes. */
-
-int
-c_common_unsafe_for_reeval (tree exp)
-{
- /* Statement expressions may not be reevaluated, likewise compound
- literals. */
- if (TREE_CODE (exp) == STMT_EXPR
- || TREE_CODE (exp) == COMPOUND_LITERAL_EXPR)
- return 2;
-
- /* Walk all other expressions. */
- return -1;
-}
-
/* Hook used by staticp to handle language-specific tree codes. */
-bool
+tree
c_staticp (tree exp)
{
- if (TREE_CODE (exp) == COMPOUND_LITERAL_EXPR
- && TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (exp)))
- return true;
- return false;
+ return (TREE_CODE (exp) == COMPOUND_LITERAL_EXPR
+ && TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (exp))
+ ? exp : NULL);
}
\f
switch (code)
{
case PREINCREMENT_EXPR:
- val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
+ val = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
break;
case POSTINCREMENT_EXPR:
- val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
+ val = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
arg = save_expr (arg);
- val = build (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
- val = build (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
+ val = build2 (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
+ val = build2 (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
break;
case PREDECREMENT_EXPR:
- val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, invert_truthvalue (arg));
+ val = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg,
+ invert_truthvalue (arg));
break;
case POSTDECREMENT_EXPR:
- val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, invert_truthvalue (arg));
+ val = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg,
+ invert_truthvalue (arg));
arg = save_expr (arg);
- val = build (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
- val = build (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
+ val = build2 (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
+ val = build2 (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
break;
default:
- abort ();
+ gcc_unreachable ();
}
TREE_SIDE_EFFECTS (val) = 1;
return val;
builtin_define_with_value ("__PTRDIFF_TYPE__", PTRDIFF_TYPE, 0);
builtin_define_with_value ("__WCHAR_TYPE__", MODIFIED_WCHAR_TYPE, 0);
builtin_define_with_value ("__WINT_TYPE__", WINT_TYPE, 0);
+ builtin_define_with_value ("__INTMAX_TYPE__", INTMAX_TYPE, 0);
+ builtin_define_with_value ("__UINTMAX_TYPE__", UINTMAX_TYPE, 0);
}
static void
c_init_attributes (void)
{
/* Fill in the built_in_attributes array. */
-#define DEF_ATTR_NULL_TREE(ENUM) \
+#define DEF_ATTR_NULL_TREE(ENUM) \
built_in_attributes[(int) ENUM] = NULL_TREE;
-#define DEF_ATTR_INT(ENUM, VALUE) \
- built_in_attributes[(int) ENUM] = build_int_2 (VALUE, VALUE < 0 ? -1 : 0);
+#define DEF_ATTR_INT(ENUM, VALUE) \
+ built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
#define DEF_ATTR_IDENT(ENUM, STRING) \
built_in_attributes[(int) ENUM] = get_identifier (STRING);
#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
if (TYPE_P (*node))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *node = build_type_copy (*node);
+ *node = build_variant_type_copy (*node);
TYPE_PACKED (*node) = 1;
if (TYPE_MAIN_VARIANT (*node) == *node)
{
/* If it is the main variant, then pack the other variants
too. This happens in,
-
+
struct Foo {
struct Foo const *ptr; // creates a variant w/o packed flag
} __ attribute__((packed)); // packs it now.
*/
tree probe;
-
+
for (probe = *node; probe; probe = TYPE_NEXT_VARIANT (probe))
TYPE_PACKED (probe) = 1;
}
-
+
}
else if (TREE_CODE (*node) == FIELD_DECL)
DECL_PACKED (*node) = 1;
that changes what the typedef is typing. */
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
DECL_COMMON (*node) = 0;
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
DECL_COMMON (*node) = 1;
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
TYPE_READONLY (TREE_TYPE (type)), 1));
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
DECL_UNINLINABLE (*node) = 1;
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
|| (TREE_CODE (node) == VAR_DECL && TREE_STATIC (node)))
{
TREE_USED (node) = 1;
+ DECL_PRESERVE_P (node) = 1;
}
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
TREE_USED (decl) = 1;
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
else
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *node = build_type_copy (*node);
+ *node = build_variant_type_copy (*node);
TREE_USED (*node) = 1;
}
TREE_THIS_VOLATILE (TREE_TYPE (type))));
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
&& TYPE_MODE (*type) == DECL_MODE (TYPE_FIELDS (*type)))))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *type = build_type_copy (*type);
+ *type = build_variant_type_copy (*type);
TYPE_TRANSPARENT_UNION (*type) = 1;
}
else if (decl != 0 && TREE_CODE (decl) == PARM_DECL
DECL_TRANSPARENT_UNION (decl) = 1;
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
*no_add_attrs = true;
if (TREE_CODE (TREE_VALUE (args)) != IDENTIFIER_NODE)
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
else
{
int j;
int len = strlen (p);
enum machine_mode mode = VOIDmode;
tree typefm;
- tree ptr_type;
+ bool valid_mode;
if (len > 4 && p[0] == '_' && p[1] == '_'
&& p[len - 1] == '_' && p[len - 2] == '_')
/* Change this type to have a type with the specified mode.
First check for the special modes. */
- if (! strcmp (p, "byte"))
+ if (!strcmp (p, "byte"))
mode = byte_mode;
else if (!strcmp (p, "word"))
mode = word_mode;
- else if (! strcmp (p, "pointer"))
+ else if (!strcmp (p, "pointer"))
mode = ptr_mode;
else
for (j = 0; j < NUM_MACHINE_MODES; j++)
if (!strcmp (p, GET_MODE_NAME (j)))
- mode = (enum machine_mode) j;
+ {
+ mode = (enum machine_mode) j;
+ break;
+ }
if (mode == VOIDmode)
{
- error ("unknown machine mode `%s'", p);
+ error ("unknown machine mode %<%s%>", p);
return NULL_TREE;
}
- if (VECTOR_MODE_P (mode))
+ valid_mode = false;
+ switch (GET_MODE_CLASS (mode))
{
+ case MODE_INT:
+ case MODE_PARTIAL_INT:
+ case MODE_FLOAT:
+ valid_mode = targetm.scalar_mode_supported_p (mode);
+ break;
+
+ case MODE_COMPLEX_INT:
+ case MODE_COMPLEX_FLOAT:
+ valid_mode = targetm.scalar_mode_supported_p (GET_MODE_INNER (mode));
+ break;
+
+ case MODE_VECTOR_INT:
+ case MODE_VECTOR_FLOAT:
warning ("specifying vector types with __attribute__ ((mode)) "
"is deprecated");
warning ("use __attribute__ ((vector_size)) instead");
- }
+ valid_mode = vector_mode_valid_p (mode);
+ break;
- typefm = lang_hooks.types.type_for_mode (mode, TYPE_UNSIGNED (type));
- if (typefm == NULL_TREE)
- error ("no data type for mode `%s'", p);
+ default:
+ break;
+ }
+ if (!valid_mode)
+ {
+ error ("unable to emulate %<%s%>", p);
+ return NULL_TREE;
+ }
- else if ((TREE_CODE (type) == POINTER_TYPE
- || TREE_CODE (type) == REFERENCE_TYPE)
- && !targetm.valid_pointer_mode (mode))
- error ("invalid pointer mode `%s'", p);
- else
+ if (POINTER_TYPE_P (type))
{
- /* If this is a vector, make sure we either have hardware
- support, or we can emulate it. */
- if (VECTOR_MODE_P (mode) && !vector_mode_valid_p (mode))
+ tree (*fn)(tree, enum machine_mode, bool);
+
+ if (!targetm.valid_pointer_mode (mode))
{
- error ("unable to emulate '%s'", GET_MODE_NAME (mode));
+ error ("invalid pointer mode %<%s%>", p);
return NULL_TREE;
}
- if (TREE_CODE (type) == POINTER_TYPE)
- {
- ptr_type = build_pointer_type_for_mode (TREE_TYPE (type),
- mode, false);
- *node = ptr_type;
- }
- else if (TREE_CODE (type) == REFERENCE_TYPE)
+ if (TREE_CODE (type) == POINTER_TYPE)
+ fn = build_pointer_type_for_mode;
+ else
+ fn = build_reference_type_for_mode;
+ typefm = fn (TREE_TYPE (type), mode, false);
+ }
+ else
+ typefm = lang_hooks.types.type_for_mode (mode, TYPE_UNSIGNED (type));
+
+ if (typefm == NULL_TREE)
+ {
+ error ("no data type for mode %qs", p);
+ return NULL_TREE;
+ }
+ else if (TREE_CODE (type) == ENUMERAL_TYPE)
+ {
+ /* For enumeral types, copy the precision from the integer
+ type returned above. If not an INTEGER_TYPE, we can't use
+ this mode for this type. */
+ if (TREE_CODE (typefm) != INTEGER_TYPE)
{
- ptr_type = build_reference_type_for_mode (TREE_TYPE (type),
- mode, false);
- *node = ptr_type;
+ error ("cannot use mode %qs for enumeral types", p);
+ return NULL_TREE;
}
- else
- *node = typefm;
- /* No need to layout the type here. The caller should do this. */
+
+ if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+ type = build_variant_type_copy (type);
+ TYPE_PRECISION (type) = TYPE_PRECISION (typefm);
+ typefm = type;
+ }
+ else if (TREE_CODE (type) != TREE_CODE (typefm))
+ {
+ error ("mode %qs applied to inappropriate type", p);
+ return NULL_TREE;
}
+
+ *node = typefm;
+
+ /* No need to layout the type here. The caller should do this. */
}
return NULL_TREE;
if (targetm.have_named_sections)
{
+ user_defined_section_attribute = true;
+
if ((TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL)
&& TREE_CODE (TREE_VALUE (args)) == STRING_CST)
{
if (TREE_CODE (decl) == VAR_DECL
&& current_function_decl != NULL_TREE
- && ! TREE_STATIC (decl))
+ && !TREE_STATIC (decl))
{
error ("%Jsection attribute cannot be specified for "
"local variables", decl);
&& strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (decl)),
TREE_STRING_POINTER (TREE_VALUE (args))) != 0)
{
- error ("%Jsection of '%D' conflicts with previous declaration",
+ error ("%Jsection of %qD conflicts with previous declaration",
*node, *node);
*no_add_attrs = true;
}
}
else
{
- error ("%Jsection attribute not allowed for '%D'", *node, *node);
+ error ("%Jsection attribute not allowed for %qD", *node, *node);
*no_add_attrs = true;
}
}
&& DECL_ORIGINAL_TYPE (decl) == NULL_TREE)
{
tree tt = TREE_TYPE (decl);
- *type = build_type_copy (*type);
+ *type = build_variant_type_copy (*type);
DECL_ORIGINAL_TYPE (decl) = tt;
TYPE_NAME (*type) = decl;
TREE_USED (*type) = TREE_USED (decl);
TREE_TYPE (decl) = *type;
}
else if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *type = build_type_copy (*type);
+ *type = build_variant_type_copy (*type);
TYPE_ALIGN (*type) = (1 << i) * BITS_PER_UNIT;
TYPE_USER_ALIGN (*type) = 1;
else if (TREE_CODE (decl) != VAR_DECL
&& TREE_CODE (decl) != FIELD_DECL)
{
- error ("%Jalignment may not be specified for '%D'", decl, decl);
+ error ("%Jalignment may not be specified for %qD", decl, decl);
*no_add_attrs = true;
}
else
tree decl = *node;
if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl))
- || (TREE_CODE (decl) != FUNCTION_DECL && ! DECL_EXTERNAL (decl)))
+ || (TREE_CODE (decl) != FUNCTION_DECL && !DECL_EXTERNAL (decl)))
{
- error ("%J'%D' defined both normally and as an alias", decl, decl);
+ error ("%J%qD defined both normally and as an alias", decl, decl);
*no_add_attrs = true;
}
}
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
*no_add_attrs = true;
- if (decl_function_context (decl) != 0 || ! TREE_PUBLIC (decl))
+ if (TYPE_P (*node))
+ {
+ if (TREE_CODE (*node) != RECORD_TYPE && TREE_CODE (*node) != UNION_TYPE)
+ {
+ warning ("%qs attribute ignored on non-class types",
+ IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+ }
+ else if (decl_function_context (decl) != 0 || !TREE_PUBLIC (decl))
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
return NULL_TREE;
}
return NULL_TREE;
}
+ /* If this is a type, set the visibility on the type decl. */
+ if (TYPE_P (decl))
+ {
+ decl = TYPE_NAME (decl);
+ if (!decl)
+ return NULL_TREE;
+ }
+
if (strcmp (TREE_STRING_POINTER (id), "default") == 0)
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
else if (strcmp (TREE_STRING_POINTER (id), "internal") == 0)
DECL_VISIBILITY (decl) = VISIBILITY_INTERNAL;
else if (strcmp (TREE_STRING_POINTER (id), "hidden") == 0)
- DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
+ DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
else if (strcmp (TREE_STRING_POINTER (id), "protected") == 0)
DECL_VISIBILITY (decl) = VISIBILITY_PROTECTED;
else
error ("visibility arg must be one of \"default\", \"hidden\", \"protected\" or \"internal\"");
+ DECL_VISIBILITY_SPECIFIED (decl) = 1;
+
+ /* For decls only, go ahead and attach the attribute to the node as well.
+ This is needed so we can determine whether we have VISIBILITY_DEFAULT
+ because the visibility was not specified, or because it was explicitly
+ overridden from the class visibility. */
+ if (DECL_P (*node))
+ *no_add_attrs = false;
return NULL_TREE;
}
+/* Determine the ELF symbol visibility for DECL, which is either a
+ variable or a function. It is an error to use this function if a
+ definition of DECL is not available in this translation unit.
+ Returns true if the final visibility has been determined by this
+ function; false if the caller is free to make additional
+ modifications. */
+
+bool
+c_determine_visibility (tree decl)
+{
+ gcc_assert (TREE_CODE (decl) == VAR_DECL
+ || TREE_CODE (decl) == FUNCTION_DECL);
+
+ /* If the user explicitly specified the visibility with an
+ attribute, honor that. DECL_VISIBILITY will have been set during
+ the processing of the attribute. We check for an explicit
+ attribute, rather than just checking DECL_VISIBILITY_SPECIFIED,
+ to distinguish the use of an attribute from the use of a "#pragma
+ GCC visibility push(...)"; in the latter case we still want other
+ considerations to be able to overrule the #pragma. */
+ if (lookup_attribute ("visibility", DECL_ATTRIBUTES (decl)))
+ return true;
+
+ /* Anything that is exported must have default visibility. */
+ if (TARGET_DLLIMPORT_DECL_ATTRIBUTES
+ && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)))
+ {
+ DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
+ DECL_VISIBILITY_SPECIFIED (decl) = 1;
+ return true;
+ }
+
+ return false;
+}
+
/* Handle an "tls_model" attribute; arguments as in
struct attribute_spec.handler. */
{
tree decl = *node;
- if (! DECL_THREAD_LOCAL (decl))
+ if (!DECL_THREAD_LOCAL (decl))
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else
if (TREE_CODE (decl) != FUNCTION_DECL)
{
- error ("%J'%E' attribute applies only to functions", decl, name);
+ error ("%J%qE attribute applies only to functions", decl, name);
*no_add_attrs = true;
}
else if (DECL_INITIAL (decl))
{
- error ("%Jcan't set '%E' attribute after definition", decl, name);
+ error ("%Jcan%'t set %qE attribute after definition", decl, name);
*no_add_attrs = true;
}
else
/* ??? TODO: Support types. */
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
if (TREE_CODE (decl) != FUNCTION_DECL)
{
- error ("%J'%E' attribute applies only to functions", decl, name);
+ error ("%J%qE attribute applies only to functions", decl, name);
*no_add_attrs = true;
}
else if (DECL_INITIAL (decl))
{
- error ("%Jcan't set '%E' attribute after definition", decl, name);
+ error ("%Jcan%'t set %qE attribute after definition", decl, name);
*no_add_attrs = true;
}
else
/* ??? TODO: Support types. */
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else if (TYPE_P (*node))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *node = build_type_copy (*node);
+ *node = build_variant_type_copy (*node);
TREE_DEPRECATED (*node) = 1;
type = *node;
}
what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
}
if (what)
- warning ("`%s' attribute ignored for `%s'",
+ warning ("%qs attribute ignored for %qs",
IDENTIFIER_POINTER (name), what);
else
- warning ("`%s' attribute ignored",
+ warning ("%qs attribute ignored",
IDENTIFIER_POINTER (name));
}
if (TREE_CODE (size) == NON_LVALUE_EXPR)
size = TREE_OPERAND (size, 0);
- if (! host_integerp (size, 1))
+ if (!host_integerp (size, 1))
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
return NULL_TREE;
}
if (TREE_CODE (type) == RECORD_TYPE
|| (GET_MODE_CLASS (orig_mode) != MODE_FLOAT
&& GET_MODE_CLASS (orig_mode) != MODE_INT)
- || ! host_integerp (TYPE_SIZE_UNIT (type), 1))
+ || !host_integerp (TYPE_SIZE_UNIT (type), 1))
{
- error ("invalid vector type for attribute `%s'",
+ error ("invalid vector type for attribute %qs",
IDENTIFIER_POINTER (name));
return NULL_TREE;
}
/* If no arguments are specified, all pointer arguments should be
non-null. Verify a full prototype is given so that the arguments
will have the correct types when we actually check them later. */
- if (! args)
+ if (!args)
{
- if (! TYPE_ARG_TYPES (type))
+ if (!TYPE_ARG_TYPES (type))
{
error ("nonnull attribute without arguments on a non-prototype");
*no_add_attrs = true;
tree argument;
unsigned HOST_WIDE_INT arg_num = 0, ck_num;
- if (! get_nonnull_operand (TREE_VALUE (args), &arg_num))
+ if (!get_nonnull_operand (TREE_VALUE (args), &arg_num))
{
error ("nonnull argument has invalid operand number (arg %lu)",
(unsigned long) attr_arg_num);
{
for (ck_num = 1; ; ck_num++)
{
- if (! argument || ck_num == arg_num)
+ if (!argument || ck_num == arg_num)
break;
argument = TREE_CHAIN (argument);
}
- if (! argument
+ if (!argument
|| TREE_CODE (TREE_VALUE (argument)) == VOID_TYPE)
{
error ("nonnull argument with out-of-range operand number (arg %lu, operand %lu)",
for (param = params, param_num = 1; ;
param_num++, param = TREE_CHAIN (param))
{
- if (! param)
+ if (!param)
break;
- if (! args || nonnull_check_p (args, param_num))
+ if (!args || nonnull_check_p (args, param_num))
check_function_arguments_recurse (check_nonnull_arg, NULL,
TREE_VALUE (param),
param_num);
}
}
+/* Check that the Nth argument of a function call (counting backwards
+ from the end) is a (pointer)0. */
+
+static void
+check_function_sentinel (tree attrs, tree params)
+{
+ tree attr = lookup_attribute ("sentinel", attrs);
+
+ if (attr)
+ {
+ if (!params)
+ warning ("missing sentinel in function call");
+ else
+ {
+ tree sentinel, end;
+ unsigned pos = 0;
+
+ if (TREE_VALUE (attr))
+ {
+ tree p = TREE_VALUE (TREE_VALUE (attr));
+ STRIP_NOPS (p);
+ pos = TREE_INT_CST_LOW (p);
+ }
+
+ sentinel = end = params;
+
+ /* Advance `end' ahead of `sentinel' by `pos' positions. */
+ while (pos > 0 && TREE_CHAIN (end))
+ {
+ pos--;
+ end = TREE_CHAIN (end);
+ }
+ if (pos > 0)
+ {
+ warning ("not enough arguments to fit a sentinel");
+ return;
+ }
+
+ /* Now advance both until we find the last parameter. */
+ while (TREE_CHAIN (end))
+ {
+ end = TREE_CHAIN (end);
+ sentinel = TREE_CHAIN (sentinel);
+ }
+
+ /* Validate the sentinel. */
+ if (!POINTER_TYPE_P (TREE_TYPE (TREE_VALUE (sentinel)))
+ || !integer_zerop (TREE_VALUE (sentinel)))
+ warning ("missing sentinel in function call");
+ }
+ }
+}
+
/* Helper for check_function_nonnull; given a list of operands which
must be non-null in ARGS, determine if operand PARAM_NUM should be
checked. */
for (; args; args = TREE_CHAIN (args))
{
- if (! get_nonnull_operand (TREE_VALUE (args), &arg_num))
- abort ();
+ bool found = get_nonnull_operand (TREE_VALUE (args), &arg_num);
+
+ gcc_assert (found);
if (arg_num == param_num)
return true;
/* ??? TODO: Support types. */
else
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
we'd be missing too much, since we do have attribute constructor. */
if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl))
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
return NULL_TREE;
}
/* Ignore the attribute for functions not returning any value. */
if (VOID_TYPE_P (TREE_TYPE (*node)))
{
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ warning ("%qs attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle a "sentinel" attribute. */
+
+static tree
+handle_sentinel_attribute (tree *node, tree name, tree args,
+ int ARG_UNUSED (flags), bool *no_add_attrs)
+{
+ tree params = TYPE_ARG_TYPES (*node);
+
+ if (!params)
+ {
+ warning ("%qs attribute requires prototypes with named arguments",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
+ else
+ {
+ while (TREE_CHAIN (params))
+ params = TREE_CHAIN (params);
+
+ if (VOID_TYPE_P (TREE_VALUE (params)))
+ {
+ warning ("%qs attribute only applies to variadic functions",
+ IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+ }
+
+ if (args)
+ {
+ tree position = TREE_VALUE (args);
+ STRIP_NOPS (position);
+ if (TREE_CODE (position) != INTEGER_CST)
+ {
+ warning ("requested position is not an integer constant");
+ *no_add_attrs = true;
+ }
+ else
+ {
+ if (tree_int_cst_lt (position, integer_zero_node))
+ {
+ warning ("requested position is less than zero");
+ *no_add_attrs = true;
+ }
+ }
+ }
+
return NULL_TREE;
}
\f
/* Check for errors in format strings. */
if (warn_format)
- check_function_format (attrs, params);
+ {
+ check_function_format (attrs, params);
+ check_function_sentinel (attrs, params);
+ }
}
/* Generic argument checking recursion routine. PARAM is the argument to
|| TREE_CODE (format_num_expr) == NON_LVALUE_EXPR)
format_num_expr = TREE_OPERAND (format_num_expr, 0);
- if (TREE_CODE (format_num_expr) != INTEGER_CST
- || TREE_INT_CST_HIGH (format_num_expr) != 0)
- abort ();
+ gcc_assert (TREE_CODE (format_num_expr) == INTEGER_CST
+ && !TREE_INT_CST_HIGH (format_num_expr));
format_num = TREE_INT_CST_LOW (format_num_expr);
else if (token == CPP_NAME)
error ("%s before \"%s\"", string, IDENTIFIER_POINTER (value));
else if (token < N_TTYPES)
- error ("%s before '%s' token", string, cpp_type2name (token));
+ error ("%s before %qs token", string, cpp_type2name (token));
else
error ("%s", string);
}
/* Walk a gimplified function and warn for functions whose return value is
ignored and attribute((warn_unused_result)) is set. This is done before
- inlining, so we don't have to worry about that. */
-
+ inlining, so we don't have to worry about that. */
+
void
c_warn_unused_result (tree *top_p)
{
break;
case CALL_EXPR:
+ if (TREE_USED (t))
+ break;
+
/* This is a naked call, as opposed to a CALL_EXPR nested inside
a MODIFY_EXPR. All calls whose value is ignored should be
represented like this. Look for the attribute. */
if (lookup_attribute ("warn_unused_result", TYPE_ATTRIBUTES (ftype)))
{
if (fdecl)
- warning ("%Hignoring return value of `%D', "
+ warning ("%Hignoring return value of %qD, "
"declared with attribute warn_unused_result",
EXPR_LOCUS (t), fdecl);
else
}
}
+/* Build the result of __builtin_offsetof. EXPR is a nested sequence of
+ component references, with an INDIRECT_REF at the bottom; much like
+ the traditional rendering of offsetof as a macro. Returns the folded
+ and properly cast result. */
+
+static tree
+fold_offsetof_1 (tree expr)
+{
+ enum tree_code code = PLUS_EXPR;
+ tree base, off, t;
+
+ switch (TREE_CODE (expr))
+ {
+ case ERROR_MARK:
+ return expr;
+
+ case INDIRECT_REF:
+ return size_zero_node;
+
+ case COMPONENT_REF:
+ base = fold_offsetof_1 (TREE_OPERAND (expr, 0));
+ if (base == error_mark_node)
+ return base;
+
+ t = TREE_OPERAND (expr, 1);
+ if (DECL_C_BIT_FIELD (t))
+ {
+ error ("attempt to take address of bit-field structure "
+ "member %qs", IDENTIFIER_POINTER (DECL_NAME (t)));
+ return error_mark_node;
+ }
+ off = size_binop (PLUS_EXPR, DECL_FIELD_OFFSET (t),
+ size_int (tree_low_cst (DECL_FIELD_BIT_OFFSET (t), 1)
+ / BITS_PER_UNIT));
+ break;
+
+ case ARRAY_REF:
+ base = fold_offsetof_1 (TREE_OPERAND (expr, 0));
+ if (base == error_mark_node)
+ return base;
+
+ t = TREE_OPERAND (expr, 1);
+ if (TREE_CODE (t) == INTEGER_CST && tree_int_cst_sgn (t) < 0)
+ {
+ code = MINUS_EXPR;
+ t = fold (build1 (NEGATE_EXPR, TREE_TYPE (t), t));
+ }
+ t = convert (sizetype, t);
+ off = size_binop (MULT_EXPR, TYPE_SIZE_UNIT (TREE_TYPE (expr)), t);
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ return size_binop (code, base, off);
+}
+
+tree
+fold_offsetof (tree expr)
+{
+ /* Convert back from the internal sizetype to size_t. */
+ return convert (size_type_node, fold_offsetof_1 (expr));
+}
+
#include "gt-c-common.h"
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