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106 lines
3.8 KiB

2009-03-18 Jakub Jelinek <jakub@redhat.com>
PR debug/38757
* langhooks.h (struct lang_hooks): Add source_language langhook.
* langhooks-def.h (LANG_HOOKS_SOURCE_LANGUAGE): Define to NULL.
(LANG_HOOKS_INITIALIZER): Add LANG_HOOKS_SOURCE_LANGUAGE.
* dwarf2out.c (add_prototyped_attribute): Add DW_AT_prototype
also for DW_LANG_{C,C99,ObjC}.
(gen_compile_unit_die): Use lang_hooks.source_language () to
determine if DW_LANG_C99 or DW_LANG_C89 should be returned.
c/
* c-lang.c (c_source_language): New function.
(LANG_HOOKS_SOURCE_LANGUAGE): Define.
--- gcc/langhooks.h.jj 2011-01-03 12:53:05.125745450 +0100
+++ gcc/langhooks.h 2011-01-04 17:59:43.166744926 +0100
@@ -467,6 +467,10 @@ struct lang_hooks
gimplification. */
bool deep_unsharing;
+ /* Return year of the source language standard version if the FE supports
+ multiple versions of the standard. */
+ int (*source_language) (void);
+
/* Whenever you add entries here, make sure you adjust langhooks-def.h
and langhooks.c accordingly. */
};
--- gcc/langhooks-def.h.jj 2011-01-03 12:53:05.000000000 +0100
+++ gcc/langhooks-def.h 2011-01-04 18:00:44.858851030 +0100
@@ -118,6 +118,7 @@ extern void lhd_omp_firstprivatize_type_
#define LANG_HOOKS_BLOCK_MAY_FALLTHRU hook_bool_const_tree_true
#define LANG_HOOKS_EH_USE_CXA_END_CLEANUP false
#define LANG_HOOKS_DEEP_UNSHARING false
+#define LANG_HOOKS_SOURCE_LANGUAGE NULL
/* Attribute hooks. */
#define LANG_HOOKS_ATTRIBUTE_TABLE NULL
@@ -303,7 +304,8 @@ extern void lhd_end_section (void);
LANG_HOOKS_EH_PROTECT_CLEANUP_ACTIONS, \
LANG_HOOKS_BLOCK_MAY_FALLTHRU, \
LANG_HOOKS_EH_USE_CXA_END_CLEANUP, \
- LANG_HOOKS_DEEP_UNSHARING \
+ LANG_HOOKS_DEEP_UNSHARING, \
+ LANG_HOOKS_SOURCE_LANGUAGE \
}
#endif /* GCC_LANG_HOOKS_DEF_H */
--- gcc/c/c-lang.c.jj 2011-01-03 12:53:05.376056936 +0100
+++ gcc/c/c-lang.c 2011-01-04 17:59:43.167743798 +0100
@@ -36,6 +36,12 @@ along with GCC; see the file COPYING3.
enum c_language_kind c_language = clk_c;
+static int
+c_source_language (void)
+{
+ return flag_isoc99 ? 1999 : 1989;
+}
+
/* Lang hooks common to C and ObjC are declared in c-objc-common.h;
consequently, there should be very few hooks below. */
@@ -45,6 +51,8 @@ enum c_language_kind c_language = clk_c;
#define LANG_HOOKS_INIT c_objc_common_init
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS c_common_init_ts
+#undef LANG_HOOKS_SOURCE_LANGUAGE
+#define LANG_HOOKS_SOURCE_LANGUAGE c_source_language
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
--- gcc/dwarf2out.c.jj 2011-01-03 12:53:05.102056475 +0100
+++ gcc/dwarf2out.c 2011-01-04 18:03:14.534151763 +0100
@@ -16109,9 +16109,18 @@ add_bit_size_attribute (dw_die_ref die,
static inline void
add_prototyped_attribute (dw_die_ref die, tree func_type)
{
- if (get_AT_unsigned (comp_unit_die (), DW_AT_language) == DW_LANG_C89
- && prototype_p (func_type))
- add_AT_flag (die, DW_AT_prototyped, 1);
+ switch (get_AT_unsigned (comp_unit_die (), DW_AT_language))
+ {
+ case DW_LANG_C:
+ case DW_LANG_C89:
+ case DW_LANG_C99:
+ case DW_LANG_ObjC:
+ if (prototype_p (func_type))
+ add_AT_flag (die, DW_AT_prototyped, 1);
+ break;
+ default:
+ break;
+ }
}
/* Add an 'abstract_origin' attribute below a given DIE. The DIE is found
@@ -18915,6 +18924,10 @@ gen_compile_unit_die (const char *filena
if (strcmp (language_string, "GNU Go") == 0)
language = DW_LANG_Go;
}
+ else if (strcmp (language_string, "GNU C") == 0
+ && lang_hooks.source_language
+ && lang_hooks.source_language () >= 1999)
+ language = DW_LANG_C99;
}
/* Use a degraded Fortran setting in strict DWARF2 so is_fortran works. */
else if (strcmp (language_string, "GNU Fortran") == 0)