[Bug rtl-optimization/109187] New: [13 Regression] ICE: qsort checking failed: qsort comparator non-negative on sorted output: 1736258160 at -O2

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109187

            Bug ID: 109187
           Summary: [13 Regression] ICE: qsort checking failed: qsort
                    comparator non-negative on sorted output: 1736258160
                    at -O2
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: aarch64-unknown-linux-gnu

Created attachment 54703
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54703&action=edit
reduced testcase

Compiler output:
$ aarch64-unknown-linux-gnu-gcc testcase.c -O2
testcase.c: In function 'foo':
testcase.c:15:1: error: qsort comparator non-negative on sorted output:
1736258160
   15 | }
      | ^
during RTL pass: sched1
testcase.c:15:1: internal compiler error: qsort checking failed
0xad2af3 qsort_chk_error
        /repo/gcc-trunk/gcc/vec.cc:204
0xad2c3c qsort_chk(void*, unsigned long, unsigned long, int (*)(void const*,
void const*, void*), void*)
        /repo/gcc-trunk/gcc/vec.cc:246
0x20ccab5 gcc_qsort(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
        /repo/gcc-trunk/gcc/sort.cc:272
0x1ec3882 ready_sort_real
        /repo/gcc-trunk/gcc/haifa-sched.cc:3095
0x1ecc05c ready_sort
        /repo/gcc-trunk/gcc/haifa-sched.cc:3111
0x1ecc05c schedule_block(basic_block_def**, void*)
        /repo/gcc-trunk/gcc/haifa-sched.cc:6718
0x1125b1a schedule_region
        /repo/gcc-trunk/gcc/sched-rgn.cc:3200
0x1125b1a schedule_insns()
        /repo/gcc-trunk/gcc/sched-rgn.cc:3527
0x1125dec schedule_insns()
        /repo/gcc-trunk/gcc/sched-rgn.cc:3513
0x1125dec rest_of_handle_sched
        /repo/gcc-trunk/gcc/sched-rgn.cc:3731
0x1125dec execute
        /repo/gcc-trunk/gcc/sched-rgn.cc:3841
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