https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68041
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- With the patch in comment 2, bootstrap completed without any problem. Preliminary tests for g++ and asan === g++ Summary for unix/-m64 === # of expected passes 1007 # of unexpected failures 14 # of unsupported tests 179 === g++ Summary === # of expected passes 2021 # of unexpected failures 21 # of unsupported tests 358 the failures are FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O0 output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O1 output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O2 output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O3 -g output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -Os output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O2 -flto -flto-partition=none output pattern test FAIL: c-c++-common/asan/sanity-check-pure-c-1.c -O2 -flto output pattern test for both -m32 and -m64, and FAIL: c-c++-common/asan/memcmp-1.c -O0 output pattern test FAIL: c-c++-common/asan/memcmp-1.c -O1 output pattern test FAIL: c-c++-common/asan/memcmp-1.c -O2 output pattern test FAIL: c-c++-common/asan/memcmp-1.c -O3 -g output pattern test FAIL: c-c++-common/asan/memcmp-1.c -Os output pattern test FAIL: c-c++-common/asan/memcmp-1.c -O2 -flto -flto-partition=none output pattern test FAIL: c-c++-common/asan/memcmp-1.c -O2 -flto output pattern test for -m64 only. How many lines of the output do you need to adjust the regexps? Further tests for ubsan and gcc in progress.