https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864
--- Comment #23 from Jürgen Reuter <juergen.reuter at desy dot de> ---
This patch still doesn't work for me:
libtool: compile: /usr/local/packages/gcc_9.0/_build/./gcc/xgcc -shared-libgcc
-B/usr/local/packages/gcc_9.0/_build/./gcc -nostdinc++
-L/usr/local/packages/gcc_9.0/_build/x86_64-apple-darwin18.5.0/libstdc++-v3/src
-L/usr/local/packages/gcc_9.0/_build/x86_64-apple-darwin18.5.0/libstdc++-v3/src/.libs
-L/usr/local/packages/gcc_9.0/_build/x86_64-apple-darwin18.5.0/libstdc++-v3/libsupc++/.libs
-B/usr/local/x86_64-apple-darwin18.5.0/bin/
-B/usr/local/x86_64-apple-darwin18.5.0/lib/ -isystem
/usr/local/x86_64-apple-darwin18.5.0/include -isystem
/usr/local/x86_64-apple-darwin18.5.0/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../../../../libsanitizer/sanitizer_common -I.. -I
../../../../libsanitizer/include -isystem
../../../../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-darwin18.5.0
-I../../../../libsanitizer/../libstdc++-v3/libsupc++ -std=gnu++11 -g -O2 -MT
sanitizer_platform_limits_posix.lo -MD -MP -MF
.deps/sanitizer_platform_limits_posix.Tpo -c
../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
-fno-common -DPIC -o .libs/sanitizer_platform_limits_posix.o
In file included from /usr/include/sys/attr.h:42,
from /usr/include/sys/mount.h:76,
from
../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:55:
/usr/include/sys/ucred.h:94:2: error: '_Atomic' does not name a type
94 | _Atomic u_long cr_ref; /* reference count */
| ^~~~~~~
make[4]: *** [sanitizer_platform_limits_posix.lo] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-target-libsanitizer] Error 2
make: *** [all] Error 2
