diff options
Diffstat (limited to 'gcc/c/c-decl.c')
| -rw-r--r-- | gcc/c/c-decl.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 6ba0e0e..88424a7 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -9515,32 +9515,48 @@ declspecs_add_qual (source_location loc, gcc_assert (TREE_CODE (qual) == IDENTIFIER_NODE && C_IS_RESERVED_WORD (qual)); i = C_RID_CODE (qual); + location_t prev_loc = 0; switch (i) { case RID_CONST: dupe = specs->const_p; specs->const_p = true; + prev_loc = specs->locations[cdw_const]; specs->locations[cdw_const] = loc; break; case RID_VOLATILE: dupe = specs->volatile_p; specs->volatile_p = true; + prev_loc = specs->locations[cdw_volatile]; specs->locations[cdw_volatile] = loc; break; case RID_RESTRICT: dupe = specs->restrict_p; specs->restrict_p = true; + prev_loc = specs->locations[cdw_restrict]; specs->locations[cdw_restrict] = loc; break; case RID_ATOMIC: dupe = specs->atomic_p; specs->atomic_p = true; + prev_loc = specs->locations[cdw_atomic]; + specs->locations[cdw_atomic] = loc; break; default: gcc_unreachable (); } if (dupe) - pedwarn_c90 (loc, OPT_Wpedantic, "duplicate %qE", qual); + { + bool warned = pedwarn_c90 (loc, OPT_Wpedantic, + "duplicate %qE declaration specifier", qual); + if (!warned + && warn_duplicate_decl_specifier + && prev_loc >= RESERVED_LOCATION_COUNT + && !from_macro_expansion_at (prev_loc) + && !from_macro_expansion_at (loc)) + warning_at (loc, OPT_Wduplicate_decl_specifier, + "duplicate %qE declaration specifier", qual); + } return specs; } |