[Bug target/95381] New: [11 Regression]: Bootstrap on m68k fails with ICE: in operator[], at vec.h:867

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95381

            Bug ID: 95381
           Summary: [11 Regression]: Bootstrap on m68k fails with ICE: in
                    operator[], at vec.h:867
           Product: gcc
           Version: 11.0
               URL: https://buildd.debian.org/status/fetch.php?pkg=gcc-sna
                    pshot&arch=m68k&ver=1%3A20200525-1&stamp=1590584234&ra
                    w=0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: glaubitz at physik dot fu-berlin.de
                CC: bernds at gcc dot gnu.org, schwab at gcc dot gnu.org
  Target Milestone: ---

Bootstrapping gcc-11 on m68k fails with:

ln -sf libgccjit.so.0 libgccjit.so
echo | /<<PKGBUILDDIR>>/build-jit/./gcc/xgcc
-B/<<PKGBUILDDIR>>/build-jit/./gcc/ -E -dM - | \
  sed -n -e 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p' \
         -e 's/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
  sort -u > tmp-macro_list
/bin/bash ../../src/gcc/../move-if-change tmp-macro_list macro_list
echo timestamp > s-macro_list
/<<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:867
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.
/<<PKGBUILDDIR>>/build-jit/./gcc/xgcc -B/<<PKGBUILDDIR>>/build-jit/./gcc/ -xc++
-nostdinc /dev/null -S -o /dev/null
-fself-test=../../src/gcc/testsuite/selftests
make[4]: *** [../../src/gcc/c/Make-lang.in:124: s-selftest-c] Error 1
make[4]: *** Waiting for unfinished jobs....
cc1plus: internal compiler error: in operator[], at vec.h:867
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.
make[4]: *** [../../src/gcc/cp/Make-lang.in:178: s-selftest-c++] Error 1