[Bug algol68/123653] New: algol68: segmentation fault in mode_check_selection

[jemarch at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123653

            Bug ID: 123653
           Summary: algol68: segmentation fault in mode_check_selection
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: algol68
          Assignee: algol68 at gcc dot gnu.org
          Reporter: jemarch at gcc dot gnu.org
  Target Milestone: ---

Compiling the following program ICEs:

  begin mode Foo = struct (int i);
        Foo f;
        j of f
  end

a681: internal compiler error: Segmentation fault
0x233630d internal_error(char const*, ...)
        ../../gcc/diagnostic-global-context.cc:787
0x10573bf crash_signal
        ../../gcc/toplev.cc:325
0x7fb9fab8904f ???
        ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x7fb9facbe616 __strcmp_sse42
        ../sysdeps/x86_64/multiarch/strcmp-sse4_2.S:173
0xa24029 mode_check_selection
        ../../gcc/algol68/a68-parser-moids-check.cc:1674
0xa24029 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1796
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1732
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1735
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1732
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1735
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1732
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1735
0xa253b1 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1732
0xa253b1 mode_check_serial
        ../../gcc/algol68/a68-parser-moids-check.cc:397
0xa2551f mode_check_serial_units
        ../../gcc/algol68/a68-parser-moids-check.cc:422
0xa256f4 mode_check_closed
        ../../gcc/algol68/a68-parser-moids-check.cc:693
0xa25716 mode_check_closed
        ../../gcc/algol68/a68-parser-moids-check.cc:695
0xa23610 mode_check_enclosed
        ../../gcc/algol68/a68-parser-moids-check.cc:883
0xa23c06 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1780
0xa239f7 mode_check_unit
        ../../gcc/algol68/a68-parser-moids-check.cc:1732
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