https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79341
--- Comment #65 from Dominik Vogt <vogt at linux dot vnet.ibm.com> --- That patch does not compile, and fixing the compiler error (context -> ctx) doesn't help either. > but I also can't reproduce the nullptr-1.c failure myself An example command line is $ .../gcc/build-fixes/gcc/xgcc -B.../build-fixes/gcc/ .../gcc/testsuite/c-c++-common/asan/null-deref-1.c -B.../build-fixes/s390x-ibm-linux-gnu/./libsanitizer/ -B.../build-fixes/s390x-ibm-linux-gnu/./libsanitizer/asan/ -L.../build-fixes/s390x-ibm-linux-gnu/./libsanitizer/asan/.libs -fsanitize=address -g -I.../gcc/testsuite/../../libsanitizer/include -fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -fno-omit-frame-pointer -fno-shrink-wrap -lm -m64 -o ./null-deref-1.exe -march=zEC12