#include "debug.h"
#include "timevar.h"
#include "c-common.h"
+#include "c-pragma.h"
/* In grokdeclarator, distinguish syntactic contexts of declarators. */
enum decl_context
int current_function_returns_null;
+/* Set to 0 at beginning of a function definition, set to 1 if
+ a call to a noreturn function is seen. */
+
+int current_function_returns_abnormally;
+
/* Set to nonzero by `grokdeclarator' for a function
whose return type is defaulted, if warnings for this are desired. */
int flag_no_asm;
-/* Nonzero means do some things the same way PCC does. */
-
-int flag_traditional;
-
/* Nonzero means enable C89 Amendment 1 features. */
int flag_isoc94 = 0;
int flag_noniso_default_format_attributes = 1;
-/* Nonzero means to allow single precision math even if we're generally
- being traditional. */
-int flag_allow_single_precision = 0;
-
/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
int flag_signed_bitfields = 1;
int strings_processed;
char *p = argv[0];
+ static const struct {
+ /* The name of the option. */
+ const char *option;
+ /* If non-NULL, a flag variable to set to 0 or 1. If NULL,
+ this means that cpp handles this option. */
+ int *flag;
+ } warn_options[] = {
+ /* This list is in alphabetical order. Keep it like that. */
+ { "bad-function-cast", &warn_bad_function_cast },
+ { "cast-qual", &warn_cast_qual },
+ { "char-subscripts", &warn_char_subscripts },
+ { "comment", NULL },
+ { "comments", NULL },
+ { "conversion", &warn_conversion },
+ { "div-by-zero", &warn_div_by_zero },
+ { "float-equal", &warn_float_equal },
+ { "format-extra-args", &warn_format_extra_args },
+ { "format-nonliteral", &warn_format_nonliteral },
+ { "format-security", &warn_format_security },
+ { "format-y2k", &warn_format_y2k },
+ { "implicit-function-declaration", &mesg_implicit_function_declaration },
+ { "implicit-int", &warn_implicit_int },
+ { "import", NULL },
+ { "long-long", &warn_long_long },
+ { "main", &warn_main },
+ { "missing-braces", &warn_missing_braces },
+ { "missing-declarations", &warn_missing_declarations },
+ { "missing-format-attribute", &warn_missing_format_attribute },
+ { "missing-prototypes", &warn_missing_prototypes },
+ { "multichar", &warn_multichar },
+ { "nested-externs", &warn_nested_externs },
+ { "parentheses", &warn_parentheses },
+ { "pointer-arith", &warn_pointer_arith },
+ { "redundant-decls", &warn_redundant_decls },
+ { "return-type", &warn_return_type },
+ { "sequence-point", &warn_sequence_point },
+ { "sign-compare", &warn_sign_compare },
+ { "strict-prototypes", &warn_strict_prototypes },
+ { "traditional", &warn_traditional },
+ { "trigraphs", NULL },
+ { "undef", NULL },
+ { "write-strings", &flag_const_strings }
+ };
+
strings_processed = cpp_handle_option (parse_in, argc, argv, 0);
- if (!strcmp (p, "-ftraditional") || !strcmp (p, "-traditional"))
- {
- warning ("-traditional is deprecated and may be removed");
- flag_traditional = 1;
- flag_writable_strings = 1;
- }
- else if (!strcmp (p, "-fallow-single-precision"))
- flag_allow_single_precision = 1;
- else if (!strcmp (p, "-fhosted") || !strcmp (p, "-fno-freestanding"))
+ if (!strcmp (p, "-fhosted") || !strcmp (p, "-fno-freestanding"))
{
flag_hosted = 1;
flag_no_builtin = 0;
if (warn_main == 2)
warn_main = 0;
}
- else if (!strcmp (p, "-fnotraditional") || !strcmp (p, "-fno-traditional"))
- {
- flag_traditional = 0;
- flag_writable_strings = 0;
- }
else if (!strncmp (p, "-std=", 5))
{
/* Select the appropriate language standard. We currently
iso_1990:
flag_isoc94 = 0;
iso_1994:
- flag_traditional = 0;
flag_writable_strings = 0;
flag_no_asm = 1;
flag_no_nonansi_builtin = 1;
|| !strcmp (argstart, "c9x")
|| !strcmp (argstart, "c99"))
{
- flag_traditional = 0;
flag_writable_strings = 0;
flag_no_asm = 1;
flag_no_nonansi_builtin = 1;
}
else if (!strcmp (argstart, "gnu89"))
{
- flag_traditional = 0;
flag_writable_strings = 0;
flag_no_asm = 0;
flag_no_nonansi_builtin = 0;
}
else if (!strcmp (argstart, "gnu9x") || !strcmp (argstart, "gnu99"))
{
- flag_traditional = 0;
flag_writable_strings = 0;
flag_no_asm = 0;
flag_no_nonansi_builtin = 0;
flag_isoc99 = 1;
flag_isoc94 = 1;
}
+ else if (!strcmp (argstart, "c++98"))
+ ; /* Handled by cpplib. */
else
error ("unknown C standard `%s'", argstart);
}
goto iso_1990;
else if (!strcmp (p, "-Werror-implicit-function-declaration"))
mesg_implicit_function_declaration = 2;
- else if (!strcmp (p, "-Wimplicit-function-declaration"))
- mesg_implicit_function_declaration = 1;
- else if (!strcmp (p, "-Wno-implicit-function-declaration"))
- mesg_implicit_function_declaration = 0;
- else if (!strcmp (p, "-Wimplicit-int"))
- warn_implicit_int = 1;
- else if (!strcmp (p, "-Wno-implicit-int"))
- warn_implicit_int = 0;
+ else if (!strncmp (p, "-Wformat=", 9))
+ set_Wformat (atoi (p + 9));
+ else if (!strcmp (p, "-Wformat"))
+ set_Wformat (1);
+ else if (!strcmp (p, "-Wno-format"))
+ set_Wformat (0);
else if (!strcmp (p, "-Wimplicit"))
{
warn_implicit_int = 1;
}
else if (!strcmp (p, "-Wno-implicit"))
warn_implicit_int = 0, mesg_implicit_function_declaration = 0;
- else if (!strcmp (p, "-Wlong-long"))
- warn_long_long = 1;
- else if (!strcmp (p, "-Wno-long-long"))
- warn_long_long = 0;
- else if (!strcmp (p, "-Wwrite-strings"))
- flag_const_strings = 1;
- else if (!strcmp (p, "-Wno-write-strings"))
- flag_const_strings = 0;
- else if (!strcmp (p, "-Wcast-qual"))
- warn_cast_qual = 1;
- else if (!strcmp (p, "-Wno-cast-qual"))
- warn_cast_qual = 0;
- else if (!strcmp (p, "-Wbad-function-cast"))
- warn_bad_function_cast = 1;
- else if (!strcmp (p, "-Wno-bad-function-cast"))
- warn_bad_function_cast = 0;
- else if (!strcmp (p, "-Wno-missing-noreturn"))
- warn_missing_noreturn = 0;
- else if (!strcmp (p, "-Wmissing-format-attribute"))
- warn_missing_format_attribute = 1;
- else if (!strcmp (p, "-Wno-missing-format-attribute"))
- warn_missing_format_attribute = 0;
- else if (!strcmp (p, "-Wpointer-arith"))
- warn_pointer_arith = 1;
- else if (!strcmp (p, "-Wno-pointer-arith"))
- warn_pointer_arith = 0;
- else if (!strcmp (p, "-Wstrict-prototypes"))
- warn_strict_prototypes = 1;
- else if (!strcmp (p, "-Wno-strict-prototypes"))
- warn_strict_prototypes = 0;
- else if (!strcmp (p, "-Wmissing-prototypes"))
- warn_missing_prototypes = 1;
- else if (!strcmp (p, "-Wno-missing-prototypes"))
- warn_missing_prototypes = 0;
- else if (!strcmp (p, "-Wmissing-declarations"))
- warn_missing_declarations = 1;
- else if (!strcmp (p, "-Wno-missing-declarations"))
- warn_missing_declarations = 0;
- else if (!strcmp (p, "-Wredundant-decls"))
- warn_redundant_decls = 1;
- else if (!strcmp (p, "-Wno-redundant-decls"))
- warn_redundant_decls = 0;
- else if (!strcmp (p, "-Wnested-externs"))
- warn_nested_externs = 1;
- else if (!strcmp (p, "-Wno-nested-externs"))
- warn_nested_externs = 0;
- else if (!strcmp (p, "-Wtraditional"))
- warn_traditional = 1;
- else if (!strcmp (p, "-Wno-traditional"))
- warn_traditional = 0;
- else if (!strncmp (p, "-Wformat=", 9))
- set_Wformat (atoi (p + 9));
- else if (!strcmp (p, "-Wformat"))
- set_Wformat (1);
- else if (!strcmp (p, "-Wno-format"))
- set_Wformat (0);
- else if (!strcmp (p, "-Wformat-y2k"))
- warn_format_y2k = 1;
- else if (!strcmp (p, "-Wno-format-y2k"))
- warn_format_y2k = 0;
- else if (!strcmp (p, "-Wformat-extra-args"))
- warn_format_extra_args = 1;
- else if (!strcmp (p, "-Wno-format-extra-args"))
- warn_format_extra_args = 0;
- else if (!strcmp (p, "-Wformat-nonliteral"))
- warn_format_nonliteral = 1;
- else if (!strcmp (p, "-Wno-format-nonliteral"))
- warn_format_nonliteral = 0;
- else if (!strcmp (p, "-Wformat-security"))
- warn_format_security = 1;
- else if (!strcmp (p, "-Wno-format-security"))
- warn_format_security = 0;
- else if (!strcmp (p, "-Wchar-subscripts"))
- warn_char_subscripts = 1;
- else if (!strcmp (p, "-Wno-char-subscripts"))
- warn_char_subscripts = 0;
- else if (!strcmp (p, "-Wconversion"))
- warn_conversion = 1;
- else if (!strcmp (p, "-Wno-conversion"))
- warn_conversion = 0;
- else if (!strcmp (p, "-Wparentheses"))
- warn_parentheses = 1;
- else if (!strcmp (p, "-Wno-parentheses"))
- warn_parentheses = 0;
- else if (!strcmp (p, "-Wreturn-type"))
- warn_return_type = 1;
- else if (!strcmp (p, "-Wno-return-type"))
- warn_return_type = 0;
- else if (!strcmp (p, "-Wsequence-point"))
- warn_sequence_point = 1;
- else if (!strcmp (p, "-Wno-sequence-point"))
- warn_sequence_point = 0;
- else if (!strcmp (p, "-Wcomment"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-comment"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wcomments"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-comments"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wtrigraphs"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-trigraphs"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wundef"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-undef"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wimport"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-import"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wmissing-braces"))
- warn_missing_braces = 1;
- else if (!strcmp (p, "-Wno-missing-braces"))
- warn_missing_braces = 0;
- else if (!strcmp (p, "-Wmain"))
- warn_main = 1;
else if (!strcmp (p, "-Wno-main"))
warn_main = -1;
- else if (!strcmp (p, "-Wsign-compare"))
- warn_sign_compare = 1;
- else if (!strcmp (p, "-Wno-sign-compare"))
- warn_sign_compare = 0;
- else if (!strcmp (p, "-Wfloat-equal"))
- warn_float_equal = 1;
- else if (!strcmp (p, "-Wno-float-equal"))
- warn_float_equal = 0;
- else if (!strcmp (p, "-Wmultichar"))
- warn_multichar = 1;
- else if (!strcmp (p, "-Wno-multichar"))
- warn_multichar = 0;
- else if (!strcmp (p, "-Wdiv-by-zero"))
- warn_div_by_zero = 1;
- else if (!strcmp (p, "-Wno-div-by-zero"))
- warn_div_by_zero = 0;
else if (!strcmp (p, "-Wunknown-pragmas"))
/* Set to greater than 1, so that even unknown pragmas in system
headers will be warned about. */
/* Only warn about unknown pragmas that are not in system headers. */
warn_unknown_pragmas = 1;
}
+ else if (!strcmp (p, "-E"))
+ flag_preprocess_only = 1;
else
- return strings_processed;
+ {
+ size_t i;
+ for (i = 0; i < sizeof (warn_options) / sizeof (warn_options[0]); i++)
+ if (strncmp (p, "-W", 2) == 0
+ && warn_options[i].flag
+ && (strcmp (p+2, warn_options[i].option) == 0
+ || (strncmp (p+2, "no-", 3) == 0
+ && strcmp (p+5, warn_options[i].option) == 0)))
+ {
+ *(warn_options[i].flag) = strncmp (p+2, "no-", 3) != 0;
+ return 1;
+ }
+ return strings_processed;
+ }
return 1;
}
for a top-level tentative array defn that wasn't complete before. */
void
-finish_incomplete_decl (decl)
+c_finish_incomplete_decl (decl)
tree decl;
{
if (TREE_CODE (decl) == VAR_DECL)
match enough. Ultimately, copy most of the information from the new
decl to the old one, and keep using the old one. */
- if (flag_traditional && TREE_CODE (newdecl) == FUNCTION_DECL
- && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (newdecl)) == olddecl
- && DECL_INITIAL (olddecl) == 0)
- /* If -traditional, avoid error for redeclaring fcn
- after implicit decl. */
- ;
- else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_BUILT_IN (olddecl))
+ if (TREE_CODE (olddecl) == FUNCTION_DECL && DECL_BUILT_IN (olddecl))
{
/* A function declaration for a built-in function. */
if (!TREE_PUBLIC (newdecl))
if (! different_binding_level)
TREE_TYPE (olddecl) = oldtype;
}
+ else if (TYPE_ARG_TYPES (oldtype) == NULL
+ && TYPE_ARG_TYPES (newtype) != NULL)
+ {
+ /* For bcmp, bzero, fputs the builtin type has arguments not
+ specified. Use the ones from the prototype so that type checking
+ is done for them. */
+ tree trytype
+ = build_function_type (TREE_TYPE (oldtype),
+ TYPE_ARG_TYPES (newtype));
+ trytype = build_type_attribute_variant (trytype,
+ TYPE_ATTRIBUTES (oldtype));
+
+ oldtype = trytype;
+ if (! different_binding_level)
+ TREE_TYPE (olddecl) = oldtype;
+ }
if (!types_match)
{
/* If types don't match for a built-in, throw away the built-in. */
&& current_binding_level == global_binding_level)
? "`%s' previously defined here"
: "`%s' previously declared here"));
+ return 0;
}
else if (TREE_CODE (newdecl) == TYPE_DECL
&& (DECL_IN_SYSTEM_HEADER (olddecl)
}
/* Type for passing arg must be consistent
with that declared for the arg. */
- if (! comptypes (TREE_VALUE (parm), TREE_VALUE (type))
- /* If -traditional, allow `unsigned int' instead of `int'
- in the prototype. */
- && (! (flag_traditional
- && TYPE_MAIN_VARIANT (TREE_VALUE (parm)) == integer_type_node
- && TYPE_MAIN_VARIANT (TREE_VALUE (type)) == unsigned_type_node)))
+ if (! comptypes (TREE_VALUE (parm), TREE_VALUE (type)))
{
error_with_decl (newdecl,
"prototype for `%s' follows and argument %d doesn't match",
IDENTIFIER_POINTER (name));
t = lookup_name_current_level (name);
- /* Don't type check externs here when -traditional. This is so that
- code with conflicting declarations inside blocks will get warnings
- not errors. X11 for instance depends on this. */
- if (! t && DECL_EXTERNAL (x) && TREE_PUBLIC (x) && ! flag_traditional)
+ if (! t && DECL_EXTERNAL (x) && TREE_PUBLIC (x))
{
- t = lookup_name (name);
+ t = IDENTIFIER_GLOBAL_VALUE (name);
/* Type decls at global scope don't conflict with externs declared
inside lexical blocks. */
- if (t && TREE_CODE (t) == TYPE_DECL)
- t = 0;
+ if (! t || TREE_CODE (t) == TYPE_DECL)
+ /* If there's no visible global declaration, try for an
+ invisible one. */
+ t = IDENTIFIER_LIMBO_VALUE (name);
different_binding_level = 1;
}
if (t != 0 && t == error_mark_node)
}
/* If this decl is `static' and an implicit decl was seen previously,
- warn. But don't complain if -traditional,
- since traditional compilers don't complain. */
- if (! flag_traditional && TREE_PUBLIC (name)
+ warn. */
+ if (TREE_PUBLIC (name)
/* Don't test for DECL_EXTERNAL, because grokdeclarator
sets this for all functions. */
&& ! TREE_PUBLIC (x)
}
/* Multiple external decls of the same identifier ought to match.
- Check against both global declarations (when traditional) and out of
- scope (limbo) block level declarations.
-
We get warnings about inline functions where they are defined.
Avoid duplicate warnings where they are used. */
if (TREE_PUBLIC (x)
{
tree decl;
- if (flag_traditional && IDENTIFIER_GLOBAL_VALUE (name) != 0
- && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name))
- || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name))))
- decl = IDENTIFIER_GLOBAL_VALUE (name);
- else if (IDENTIFIER_LIMBO_VALUE (name) != 0)
+ if (IDENTIFIER_LIMBO_VALUE (name) != 0)
/* Decls in limbo are always extern, so no need to check that. */
decl = IDENTIFIER_LIMBO_VALUE (name);
else
"previous implicit declaration of `%s'");
}
- /* In PCC-compatibility mode, extern decls of vars with no current decl
- take effect at top level no matter where they are. */
- if (flag_traditional && DECL_EXTERNAL (x)
- && lookup_name (name) == 0)
- {
- tree type = TREE_TYPE (x);
-
- /* But don't do this if the type contains temporary nodes. */
- while (type)
- {
- if (type == error_mark_node)
- break;
- if (TYPE_CONTEXT (type))
- {
- warning_with_decl (x, "type of external `%s' is not global");
- /* By exiting the loop early, we leave TYPE nonzero,
- and thus prevent globalization of the decl. */
- break;
- }
- else if (TREE_CODE (type) == FUNCTION_TYPE
- && TYPE_ARG_TYPES (type) != 0)
- /* The types might not be truly local,
- but the list of arg types certainly is temporary.
- Since prototypes are nontraditional,
- ok not to do the traditional thing. */
- break;
- type = TREE_TYPE (type);
- }
-
- if (type == 0)
- b = global_binding_level;
- }
-
/* This name is new in its binding level.
Install the new declaration and return it. */
if (b == global_binding_level)
IDENTIFIER_IMPLICIT_DECL (functionid) = decl;
/* ANSI standard says implicit declarations are in the innermost block.
- So we record the decl in the standard fashion.
- If flag_traditional is set, pushdecl does it top-level. */
+ So we record the decl in the standard fashion. */
pushdecl (decl);
/* This is a no-op in c-lang.c or something real in objc-actions.c. */
{
if (TREE_CODE (newdecl) == TYPE_DECL)
{
- if (flag_traditional && TREE_TYPE (newdecl) == TREE_TYPE (olddecl))
- return 0;
- /* pushdecl creates distinct types for TYPE_DECLs by calling
- build_type_copy, so the above comparison generally fails. We do
- another test against the TYPE_MAIN_VARIANT of the olddecl, which
- is equivalent to what this code used to do before the build_type_copy
- call. The variant type distinction should not matter for traditional
- code, because it doesn't have type qualifiers. */
- if (flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)) == TREE_TYPE (newdecl))
- return 0;
+ /* Do not complain about type redeclarations where at least one
+ declaration was in a system header. */
if (DECL_IN_SYSTEM_HEADER (olddecl) || DECL_IN_SYSTEM_HEADER (newdecl))
return 0;
return 1;
= build_function_type (ptr_type_node,
tree_cons (NULL_TREE, ptr_type_node, endlink));
- /* Types which are common to the fortran compiler and libf2c. When
- changing these, you also need to be concerned with f/com.h. */
-
- if (TYPE_PRECISION (float_type_node)
- == TYPE_PRECISION (long_integer_type_node))
- {
- g77_integer_type_node = long_integer_type_node;
- g77_uinteger_type_node = long_unsigned_type_node;
- }
- else if (TYPE_PRECISION (float_type_node)
- == TYPE_PRECISION (integer_type_node))
- {
- g77_integer_type_node = integer_type_node;
- g77_uinteger_type_node = unsigned_type_node;
- }
- else
- g77_integer_type_node = g77_uinteger_type_node = NULL_TREE;
-
- if (g77_integer_type_node != NULL_TREE)
- {
- pushdecl (build_decl (TYPE_DECL, get_identifier ("__g77_integer"),
- g77_integer_type_node));
- pushdecl (build_decl (TYPE_DECL, get_identifier ("__g77_uinteger"),
- g77_uinteger_type_node));
- }
-
- if (TYPE_PRECISION (float_type_node) * 2
- == TYPE_PRECISION (long_integer_type_node))
- {
- g77_longint_type_node = long_integer_type_node;
- g77_ulongint_type_node = long_unsigned_type_node;
- }
- else if (TYPE_PRECISION (float_type_node) * 2
- == TYPE_PRECISION (long_long_integer_type_node))
- {
- g77_longint_type_node = long_long_integer_type_node;
- g77_ulongint_type_node = long_long_unsigned_type_node;
- }
- else
- g77_longint_type_node = g77_ulongint_type_node = NULL_TREE;
-
- if (g77_longint_type_node != NULL_TREE)
- {
- pushdecl (build_decl (TYPE_DECL, get_identifier ("__g77_longint"),
- g77_longint_type_node));
- pushdecl (build_decl (TYPE_DECL, get_identifier ("__g77_ulongint"),
- g77_ulongint_type_node));
- }
-
pedantic_lvalues = pedantic;
make_fname_decl = c_make_fname_decl;
start_fname_decls ();
- incomplete_decl_finalize_hook = finish_incomplete_decl;
-
/* Record our roots. */
ggc_add_tree_root (c_global_trees, CTI_MAX);
tree decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
- /* If -traditional, permit redefining a builtin function any way you like.
- (Though really, if the program redefines these functions,
- it probably won't work right unless compiled with -fno-builtin.) */
- if (flag_traditional && name[0] != '_')
- DECL_BUILT_IN_NONANSI (decl) = 1;
if (library_name)
SET_DECL_ASSEMBLER_NAME (decl, get_identifier (library_name));
make_decl_rtl (decl, NULL);
DECL_BUILT_IN_CLASS (decl) = class;
DECL_FUNCTION_CODE (decl) = function_code;
+ /* The return builtins leave the current function. */
+ if (function_code == BUILT_IN_RETURN || function_code == BUILT_IN_EH_RETURN)
+ TREE_THIS_VOLATILE (decl) = 1;
+
/* Warn if a function in the namespace for users
is used without an occasion to consider it declared. */
if (name[0] != '_' || name[1] != '_')
attributes. */
void
-insert_default_attributes (decl)
+c_insert_default_attributes (decl)
tree decl;
{
if (!TREE_PUBLIC (decl))
initializer equal to zero. (Section 3.7.2)
-fno-common gives strict ANSI behavior. Usually you don't want it.
This matters only for variables with external linkage. */
- if (! flag_no_common || ! TREE_PUBLIC (decl))
+ if (!initialized && (! flag_no_common || ! TREE_PUBLIC (decl)))
DECL_COMMON (decl) = 1;
/* Set attributes here so if duplicate decl, will have proper attributes. */
decl_attributes (&decl, attributes, 0);
+ /* If #pragma weak was used, mark the decl weak now. */
+ if (current_binding_level == global_binding_level)
+ maybe_apply_pragma_weak (decl);
+
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl)
&& DECL_UNINLINABLE (decl)
const char *asmspec = 0;
/* If a name was specified, get the string. */
+ if (current_binding_level == global_binding_level)
+ asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree);
if (asmspec_tree)
asmspec = TREE_STRING_POINTER (asmspec_tree);
get_pending_sizes ();
}
-/* If DECL has a cleanup, build and return that cleanup here.
- This is a callback called by expand_expr. */
-
-tree
-maybe_build_cleanup (decl)
- tree decl ATTRIBUTE_UNUSED;
-{
- /* There are no cleanups in C. */
- return NULL_TREE;
-}
-
/* Given a parsed parameter declaration,
decode it into a PARM_DECL and push that on the current binding level.
Also, for the sake of forward parm decls,
/* Actual typedefs come to us as TYPE_DECL nodes. */
else if (TREE_CODE (id) == TYPE_DECL)
{
- type = TREE_TYPE (id);
- decl_attr = DECL_ATTRIBUTES (id);
- typedef_decl = id;
+ 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)
/* Decide whether an integer type is signed or not.
Optionally treat bitfields as signed by default. */
if (specbits & 1 << (int) RID_UNSIGNED
- /* Traditionally, all bitfields are unsigned. */
- || (bitfield && flag_traditional
- && (! explicit_flag_signed_bitfields || !flag_signed_bitfields))
|| (bitfield && ! flag_signed_bitfields
&& (explicit_int || defaulted_int || explicit_char
/* A typedef for plain `int' without `signed'
else if (type == char_type_node)
type = unsigned_char_type_node;
else if (typedef_decl)
- type = unsigned_type (type);
+ type = c_common_unsigned_type (type);
else
type = unsigned_type_node;
}
if (inner_decl == NULL_TREE
|| TREE_CODE (inner_decl) == IDENTIFIER_NODE)
attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
- if (TREE_CODE (inner_decl) == CALL_EXPR)
+ else if (TREE_CODE (inner_decl) == CALL_EXPR)
attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
- if (TREE_CODE (inner_decl) == ARRAY_REF)
+ else if (TREE_CODE (inner_decl) == ARRAY_REF)
attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
returned_attrs = decl_attributes (&type,
chainon (returned_attrs, attrs),
tree itype = NULL_TREE;
tree size = TREE_OPERAND (declarator, 1);
/* The index is a signed object `sizetype' bits wide. */
- tree index_type = signed_type (sizetype);
+ tree index_type = c_common_signed_type (sizetype);
array_ptr_quals = TREE_TYPE (declarator);
array_parm_static = TREE_STATIC (declarator);
type = integer_type_node;
}
-#ifndef TRADITIONAL_RETURN_FLOAT
- /* Traditionally, declaring return type float means double. */
-
- if (flag_traditional && TYPE_MAIN_VARIANT (type) == float_type_node)
- type = double_type_node;
-#endif /* TRADITIONAL_RETURN_FLOAT */
-
/* Construct the function type and go to the next
inner layer of declarator. */
TREE_PUBLIC (decl)
= !(specbits & ((1 << (int) RID_STATIC) | (1 << (int) RID_AUTO)));
+ if (defaulted_int)
+ C_FUNCTION_IMPLICIT_INT (decl) = 1;
+
/* Record presence of `inline', if it is reasonable. */
if (MAIN_NAME_P (declarator))
{
Otherwise, the fact that those components are volatile
will be ignored, and would even crash the compiler. */
if (C_TYPE_FIELDS_VOLATILE (TREE_TYPE (decl)))
- mark_addressable (decl);
+ c_mark_addressable (decl);
decl_attributes (&decl, returned_attrs, 0);
if (pedantic)
pedwarn ("%s defined inside parms",
TREE_CODE (t) == UNION_TYPE ? _("union") : _("structure"));
- else if (! flag_traditional)
+ else
warning ("%s defined inside parms",
TREE_CODE (t) == UNION_TYPE ? _("union") : _("structure"));
}
DECL_BIT_FIELD (x) = 1;
SET_DECL_C_BIT_FIELD (x);
- if (width == 0)
+ if (width == 0
+ && ! (* targetm.ms_bitfield_layout_p) (t))
{
/* field size 0 => force desired amount of alignment. */
#ifdef EMPTY_FIELD_BOUNDARY
min_precision (maxnode, unsign));
if (TYPE_PACKED (enumtype) || precision > TYPE_PRECISION (integer_type_node))
{
- tree narrowest = type_for_size (precision, unsign);
+ tree narrowest = c_common_type_for_size (precision, unsign);
if (narrowest == 0)
{
warning ("enumeration values exceed range of largest integer");
precision = TYPE_PRECISION (integer_type_node);
if (precision == TYPE_PRECISION (integer_type_node))
- enum_value_type = type_for_size (precision, 0);
+ enum_value_type = c_common_type_for_size (precision, 0);
else
enum_value_type = enumtype;
/* Now create a declaration for the enum value name. */
type = TREE_TYPE (value);
- type = type_for_size (MAX (TYPE_PRECISION (type),
- TYPE_PRECISION (integer_type_node)),
- ((flag_traditional
- || TYPE_PRECISION (type) >= TYPE_PRECISION (integer_type_node))
- && TREE_UNSIGNED (type)));
+ type = c_common_type_for_size (MAX (TYPE_PRECISION (type),
+ TYPE_PRECISION (integer_type_node)),
+ (TYPE_PRECISION (type)
+ >= TYPE_PRECISION (integer_type_node)
+ && TREE_UNSIGNED (type)));
decl = build_decl (CONST_DECL, name, type);
DECL_INITIAL (decl) = convert (type, value);
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_function_varargs = 0;
decl_attributes (&decl1, attributes, 0);
+ /* If #pragma weak was used, mark the decl weak now. */
+ if (current_binding_level == global_binding_level)
+ maybe_apply_pragma_weak (decl1);
+
if (DECL_DECLARED_INLINE_P (decl1)
&& DECL_UNINLINABLE (decl1)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (decl1)))
/* Promote the value to int before returning it. */
if (c_promoting_integer_type_p (restype))
{
- /* It retains unsignedness if traditional
- or if not really getting wider. */
+ /* It retains unsignedness if not really getting wider. */
if (TREE_UNSIGNED (restype)
- && (flag_traditional
- || (TYPE_PRECISION (restype)
- == TYPE_PRECISION (integer_type_node))))
+ && (TYPE_PRECISION (restype)
+ == TYPE_PRECISION (integer_type_node)))
restype = unsigned_type_node;
else
restype = integer_type_node;
layout_decl (found, 0);
}
- /* Traditionally, a parm declared float is actually a double. */
- if (found && flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (found)) == float_type_node)
- {
- TREE_TYPE (found) = double_type_node;
- DECL_ARG_TYPE (found) = double_type_node;
- layout_decl (found, 0);
- }
-
/* If no declaration found, default to int. */
if (!found)
{
"prototype declaration");
}
}
- /* If -traditional, allow `int' argument to match
- `unsigned' prototype. */
- else if (! (flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == integer_type_node
- && TYPE_MAIN_VARIANT (TREE_VALUE (type)) == unsigned_type_node))
+ else
{
error ("argument `%s' doesn't match prototype",
IDENTIFIER_POINTER (DECL_NAME (parm)));
This is called after parsing the body of the function definition.
- NESTED is nonzero if the function being finished is nested in another. */
+ NESTED is nonzero if the function being finished is nested in another.
+ CAN_DEFER_P is nonzero if the function may be deferred. */
void
-finish_function (nested)
+finish_function (nested, can_defer_p)
int nested;
+ int can_defer_p;
{
tree fndecl = current_function_decl;
-/* TREE_READONLY (fndecl) = 1;
- This caused &foo to be of type ptr-to-const-function
- which then got a warning when stored in a ptr-to-function variable. */
+#if 0
+ /* This caused &foo to be of type ptr-to-const-function which then
+ got a warning when stored in a ptr-to-function variable. */
+ TREE_READONLY (fndecl) = 1;
+#endif
poplevel (1, 0, 1);
BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
- /* Obey `register' declarations if `setjmp' is called in this fn. */
- if (flag_traditional && current_function_calls_setjmp)
- {
- setjmp_protect (DECL_INITIAL (fndecl));
- setjmp_protect_args ();
- }
-
if (MAIN_NAME_P (DECL_NAME (fndecl)) && flag_hosted)
{
if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (fndecl)))
/* Tie off the statement tree for this function. */
finish_stmt_tree (&DECL_SAVED_TREE (fndecl));
+
+ /* Complain if there's just no return statement. */
+ if (warn_return_type
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (fndecl))) != VOID_TYPE
+ && !current_function_returns_value && !current_function_returns_null
+ /* Don't complain if we abort. */
+ && !current_function_returns_abnormally
+ /* Don't warn for main(). */
+ && !MAIN_NAME_P (DECL_NAME (fndecl))
+ /* Or if they didn't actually specify a return type. */
+ && !C_FUNCTION_IMPLICIT_INT (fndecl)
+ /* Normally, with -Wreturn-type, flow will complain. Unless we're an
+ inline function, as we might never be compiled separately. */
+ && DECL_INLINE (fndecl))
+ warning ("no return statement in function returning non-void");
+
/* Clear out memory we no longer need. */
free_after_parsing (cfun);
/* Since we never call rest_of_compilation, we never clear
if (! nested)
{
/* Generate RTL for the body of this function. */
- c_expand_body (fndecl, nested, 1);
+ c_expand_body (fndecl, nested, can_defer_p);
+
/* Let the error reporting routines know that we're outside a
function. For a nested function, this value is used in
pop_c_function_context and then reset via pop_function_context. */
/* Initialize the RTL code for the function. */
current_function_decl = fndecl;
+ input_filename = DECL_SOURCE_FILE (fndecl);
init_function_start (fndecl, input_filename, DECL_SOURCE_LINE (fndecl));
/* This function is being processed in whole-function mode. */
tree shadowed_labels;
int returns_value;
int returns_null;
+ int returns_abnormally;
int warn_about_return_type;
int extern_inline;
struct binding_level *binding_level;
p->shadowed_labels = shadowed_labels;
p->returns_value = current_function_returns_value;
p->returns_null = current_function_returns_null;
+ p->returns_abnormally = current_function_returns_abnormally;
p->warn_about_return_type = warn_about_return_type;
p->extern_inline = current_extern_inline;
p->binding_level = current_binding_level;
shadowed_labels = p->shadowed_labels;
current_function_returns_value = p->returns_value;
current_function_returns_null = p->returns_null;
+ current_function_returns_abnormally = p->returns_abnormally;
warn_about_return_type = p->warn_about_return_type;
current_extern_inline = p->extern_inline;
current_binding_level = p->binding_level;
mark_binding_level (&p->binding_level);
}
-/* Copy the DECL_LANG_SPECIFIC data associated with NODE. */
+/* Copy the DECL_LANG_SPECIFIC data associated with DECL. */
void
-copy_lang_decl (decl)
+c_dup_lang_specific_decl (decl)
tree decl;
{
struct lang_decl *ld;
/* Mark the language specific bits in T for GC. */
void
-lang_mark_tree (t)
+c_mark_tree (t)
tree t;
{
if (TREE_CODE (t) == IDENTIFIER_NODE)
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