[Bug bootstrap/63188] New: [5 Regression] r214954 breaks bootstrap on x86_64-apple-darwin13

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63188

            Bug ID: 63188
           Summary: [5 Regression] r214954 breaks bootstrap on
                    x86_64-apple-darwin13
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: iains at gcc dot gnu.org, jsm28 at gcc dot gnu.org
              Host: x86_64-apple-darwin13
            Target: x86_64-apple-darwin13
             Build: x86_64-apple-darwin13

Revision r214954 breaks bootstrap on x86_64-apple-darwin13:

g++ -c  -DIN_GCC_FRONTEND -DIN_GCC_FRONTEND -g  -DIN_GCC    -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-format -Wmissing-format-attribute -Woverloaded-virtual
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-fno-common  -DHAVE_CONFIG_H -I. -Ic-family -I../../work/gcc
-I../../work/gcc/c-family -I../../work/gcc/../include -I./../intl
-I../../work/gcc/../libcpp/include -I/opt/mp/include 
-I../../work/gcc/../libdecnumber -I../../work/gcc/../libdecnumber/dpd
-I../libdecnumber -I../../work/gcc/../libbacktrace -DCLOOG_INT_GMP 
-DCLOOG_INT_GMP -I/opt/mp/include  -o c-family/c-cppbuiltin.o -MT
c-family/c-cppbuiltin.o -MMD -MP -MF c-family/.deps/c-cppbuiltin.TPo
../../work/gcc/c-family/c-cppbuiltin.c
../../work/gcc/c-family/c-cppbuiltin.c: In function 'void
c_cpp_builtins(cpp_reader*)':
../../work/gcc/c-family/c-cppbuiltin.c:972:25: error: expected
primary-expression before ',' token
      INIT_SECTION_ASM_OP, 1);
                         ^
INIT_SECTION_ASM_OP is defined in gcc/config/darwin.h:

#undef  INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP