[Bug bootstrap/66508] Attempt to Compile gcc-6.0 on OSX 10.9.4 cause segmentation fault

["youfan.noey at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66508

--- Comment #3 from Fan You <youfan.noey at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #2)
> Duplicate of pr66448? Which revision are you using?

Just updated and tried again, get the same result.

Revision: 224410

After changing

diff --git a/gcc/passes.c b/gcc/passes.c
index d3ffe33..1bc8a36 100644
--- a/gcc/passes.c
+++ b/gcc/passes.c
@@ -332,7 +332,7 @@ rest_of_decl_compilation (tree decl,
       */
       && !decl_function_context (decl)
       && !current_function_decl
-
+      && DECL_SOURCE_LOCATION (decl) != BUILTINS_LOCATION
       && !decl_type_context (decl))
     (*debug_hooks->early_global_decl) (decl);
 }

I get similar error as pr66448 

/Users/jieyuandai/src/gcc/gcc/dwarf2out.c:5693:1: error: âvoid
check_die(dw_die_ref)â defined but not used [-Werror=unused-function]
 check_die (dw_die_ref die)
 ^
cc1plus: all warnings being treated as errors

Retry build with gcc-4.9.2 get the same results.