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File gcc46-pr38757.patch of Package gcc
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. * c-lang.c (c_source_language): New function. (LANG_HOOKS_SOURCE_LANGUAGE): Define. * 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. --- 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_EH_PROTECT_CLEANUP_ACTIONS NULL #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 @@ -307,7 +308,8 @@ extern void lhd_end_section (void); LANG_HOOKS_EH_RUNTIME_TYPE, \ LANG_HOOKS_EH_PROTECT_CLEANUP_ACTIONS, \ 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-lang.c.jj 2011-01-03 12:53:05.376056936 +0100 +++ gcc/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. */ @@ -43,6 +49,8 @@ enum c_language_kind c_language = clk_c; #define LANG_HOOKS_NAME "GNU C" #undef LANG_HOOKS_INIT #define LANG_HOOKS_INIT c_objc_common_init +#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 @@ -17650,9 +17650,18 @@ 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) != NULL) + add_AT_flag (die, DW_AT_prototyped, 1); + break; + default: + break; + } } /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found @@ -19875,6 +19884,10 @@ gen_compile_unit_die (const char *filena language = DW_LANG_ObjC; else if (strcmp (language_string, "GNU Objective-C++") == 0) language = DW_LANG_ObjC_plus_plus; + else if (strcmp (language_string, "GNU C") == 0 + && lang_hooks.source_language + && lang_hooks.source_language () >= 1999) + language = DW_LANG_C99; } add_AT_unsigned (die, DW_AT_language, language);
