https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110518

            Bug ID: 110518
           Summary: ICE in alloc_succs_info, at sel-sched-ir.cc:4723
           Product: gcc
           Version: 12.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: 19373742 at buaa dot edu.cn
  Target Milestone: ---

Created attachment 55450
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55450&action=edit
The compiler output

*******************************************************************************
OS and Platform:
CentOS Linux release 7.9.2009 (Core), x86_64 GNU/Linux
*******************************************************************************
gcc version:
# /home/gcc-releases/gcc-12-0630/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/home/gcc-releases/gcc-12-0630/bin/gcc
COLLECT_LTO_WRAPPER=/home/gcc-releases/gcc-12-0630/libexec/gcc/x86_64-pc-linux-gnu/12.3.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/home/gcc-releases/gcc-12-0630/
--disable-multilib --enable-languages=c,c++
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.3.1 20230630 (GCC)
*******************************************************************************
Command Lines:
# /home/gcc-releases/gcc-12-0630/bin/gcc -I /home/csmith/include/csmith-2.3.0/ 
-O3   -fno-tree-dominator-opts -fno-tree-fre -fno-tree-pre  -fcode-hoisting
-fexpensive-optimizations -finline -finline-functions -finline-small-functions
-fmove-loop-stores -fsched-interblock -fschedule-insns2 -fstrict-aliasing
-fthread-jumps -fno-toplevel-reorder -ftree-bit-ccp -ftree-ccp -ftree-dce
-ftree-loop-im -ftree-loop-optimize -ftree-ter -fselective-scheduling2
-fvar-tracking-assignments -save-temps cra2.c -o cra2.o 2>cra2_error.txt
*******************************************************************************
Error Messages:
during RTL pass: sched2
cra2.c: In function ‘func_12’:
cra2.c:361:1: internal compiler error: in alloc_succs_info, at
sel-sched-ir.cc:4723
  361 | }
      | ^
0x6e24f5 alloc_succs_info
        ../.././gcc/sel-sched-ir.cc:4723
0x6e24f5 compute_succs_info(rtx_insn*, short)
        ../.././gcc/sel-sched-ir.cc:4760
0xc5cb66 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2738
0xc5cb66 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
0xc5cc16 compute_av_set_at_bb_end
        ../.././gcc/sel-sched.cc:2758
0xc5cc16 compute_av_set_inside_bb
        ../.././gcc/sel-sched.cc:2969
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

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