https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95381
--- Comment #8 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> --- (In reply to Richard Biener from comment #7) > Still broken? Unfortunately, yes: > https://buildd.debian.org/status/fetch.php?pkg=gcc-snapshot&arch=m68k&ver=1%3A20201002-1&stamp=1601807222&raw=0 echo timestamp > stmp-int-hdrs /<<PKGBUILDDIR>>/build-jit/./gcc/xgcc -B/<<PKGBUILDDIR>>/build-jit/./gcc/ -xc -nostdinc /dev/null -S -o /dev/null -fself-test=../../src/gcc/testsuite/selftests /<<PKGBUILDDIR>>/build-jit/./gcc/xgcc -B/<<PKGBUILDDIR>>/build-jit/./gcc/ -xc++ -nostdinc /dev/null -S -o /dev/null -fself-test=../../src/gcc/testsuite/selftests cc1: internal compiler error: in operator[], at vec.h:880 mmap: Bad file descriptor close: Bad file descriptor Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions. cc1plus: internal compiler error: in operator[], at vec.h:880 mmap: Bad file descriptor close: Bad file descriptor Please submit a full bug report, with preprocessed source if appropriate. I might try a full rebuild in a different environment. gcc-10 builds fine, FWIW.