[Bug sanitizer/78267] [7 Regression] libsanitizer breaks bootstrap on x86_64-apple-darwin16 at r241977

[howarth.at.gcc at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267

--- Comment #37 from Jack Howarth <howarth.at.gcc at gmail dot com> ---
Created attachment 40045
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40045&action=edit
preprocessed source for sanitizer_mac.cc from stage3

preprocessed source for sanitizer_mac.cc from stage3 generated with...

[Jacks-Mac-Pro:x86_64-apple-darwin15.6.0/libsanitizer/sanitizer_common] root#
/sw/src/fink.build/gcc7-7.0.0-1/darwin_objdir/./gcc/xgcc -shared-libgcc
-B/sw/src/fink.build/gcc7-7.0.0-1/darwin_objdir/./gcc -nostdinc++
-L/sw/src/fink.build/gcc7-7.0.0-1/darwin_objdir/x86_64-apple-darwin15.6.0/libstdc++-v3/src
-L/sw/src/fink.build/gcc7-7.0.0-1/darwin_objdir/x86_64-apple-darwin15.6.0/libstdc++-v3/src/.libs
-L/sw/src/fink.build/gcc7-7.0.0-1/darwin_objdir/x86_64-apple-darwin15.6.0/libstdc++-v3/libsupc++/.libs
-B/sw/lib/gcc7/x86_64-apple-darwin15.6.0/bin/
-B/sw/lib/gcc7/x86_64-apple-darwin15.6.0/lib/ -isystem
/sw/lib/gcc7/x86_64-apple-darwin15.6.0/include -isystem
/sw/lib/gcc7/x86_64-apple-darwin15.6.0/sys-include -D_GNU_SOURCE -D_DEBUG
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-DHAVE_RPC_XDR_H=0 -DHAVE_TIRPC_RPC_XDR_H=0 -I.
-I../../../../gcc-7-20161114/libsanitizer/sanitizer_common -I.. -I
../../../../gcc-7-20161114/libsanitizer/include -isystem
../../../../gcc-7-20161114/libsanitizer/include/system -Wall -W
-Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC
-fno-builtin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables
-fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include
-I../../libstdc++-v3/include/x86_64-apple-darwin15.6.0
-I../../../../gcc-7-20161114/libsanitizer/../libstdc++-v3/libsupc++
-std=gnu++11 -g -O2 -MT sanitizer_mac.lo -MD -MP -MF .deps/sanitizer_mac.Tpo -c
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc
-fno-common -DPIC -o .libs/sanitizer_mac.o --save-temps
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Address Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Address Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Address Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Undefined Behavior Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Undefined Behavior Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Undefined Behavior Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Thread Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Thread Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Thread Sanitizer reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Sanitizer tool reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Sanitizer tool reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Sanitizer tool reported a failure.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Consult syslog for more information.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Consult syslog for more information.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:0:
warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
       os_trace("Consult syslog for more information.");

../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc: In
function ‘void __sanitizer::LogFullErrorReport(const char*)’:
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:7:
error: ‘_Static_assert’ was not declared in this scope
       os_trace("Address Sanitizer reported a failure.");
       ^~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:9:
error: ‘_os_trace_with_buffer’ was not declared in this scope
       os_trace("Address Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:497:9:
note: suggested alternative: ‘_os_trace_verify_printf’
       os_trace("Address Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
         _os_trace_verify_printf
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:7:
error: ‘_Static_assert’ was not declared in this scope
       os_trace("Undefined Behavior Sanitizer reported a failure.");
       ^~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:9:
error: ‘_os_trace_with_buffer’ was not declared in this scope
       os_trace("Undefined Behavior Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:500:9:
note: suggested alternative: ‘_os_trace_verify_printf’
       os_trace("Undefined Behavior Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
         _os_trace_verify_printf
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:7:
error: ‘_Static_assert’ was not declared in this scope
       os_trace("Thread Sanitizer reported a failure.");
       ^~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:9:
error: ‘_os_trace_with_buffer’ was not declared in this scope
       os_trace("Thread Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:503:9:
note: suggested alternative: ‘_os_trace_verify_printf’
       os_trace("Thread Sanitizer reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
         _os_trace_verify_printf
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:7:
error: ‘_Static_assert’ was not declared in this scope
       os_trace("Sanitizer tool reported a failure.");
       ^~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:9:
error: ‘_os_trace_with_buffer’ was not declared in this scope
       os_trace("Sanitizer tool reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:505:9:
note: suggested alternative: ‘_os_trace_verify_printf’
       os_trace("Sanitizer tool reported a failure.");
         ^~~~~~~~~~~~~~~~~~~~~
         _os_trace_verify_printf
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:7:
error: ‘_Static_assert’ was not declared in this scope
       os_trace("Consult syslog for more information.");
       ^~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:9:
error: ‘_os_trace_with_buffer’ was not declared in this scope
       os_trace("Consult syslog for more information.");
         ^~~~~~~~~~~~~~~~~~~~~
../../../../gcc-7-20161114/libsanitizer/sanitizer_common/sanitizer_mac.cc:508:9:
note: suggested alternative: ‘_os_trace_verify_printf’
       os_trace("Consult syslog for more information.");
         ^~~~~~~~~~~~~~~~~~~~~
         _os_trace_verify_printf