[Bug tree-optimization/112333] New: ICE on valid code at -O2 and -O3: Segmentation fault

[Bug tree-optimization/112333] New: ICE on valid code at -O2 and -O3: Segmentation fault

[zhendong.su at inf dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112333

            Bug ID: 112333
           Summary: ICE on valid code at -O2 and -O3: Segmentation fault
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhendong.su at inf dot ethz.ch
  Target Milestone: ---

It appears to be a recent regression.

Compiler Explorer: https://godbolt.org/z/z8fo6PvPh 

With my local build, -g is needed to reproduce the ICE. 

[512] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231101 (experimental) (GCC) 
[513] % 
[513] % gcctk -O3 -g small.c
during GIMPLE pass: ccp
small.c: In function ‘main’:
small.c:3:5: internal compiler error: Segmentation fault
    3 | int main() {
      |     ^~~~
0x111dc93 crash_signal
        ../../gcc-trunk/gcc/toplev.cc:315
0x7f658ef6c08f ???
       
/build/glibc-BHL3KM/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xd70a7b gsi_for_stmt(gimple*)
        ../../gcc-trunk/gcc/gimple-iterator.cc:615
0x13a2e72 insert_debug_temp_for_var_def(gimple_stmt_iterator*, tree_node*)
        ../../gcc-trunk/gcc/tree-ssa.cc:471
0x13a329a insert_debug_temps_for_defs(gimple_stmt_iterator*)
        ../../gcc-trunk/gcc/tree-ssa.cc:506
0xd707e4 gsi_remove(gimple_stmt_iterator*, bool)
        ../../gcc-trunk/gcc/gimple-iterator.cc:567
0x12624c2 simple_dce_from_worklist(bitmap_head*, bitmap_head*)
        ../../gcc-trunk/gcc/tree-ssa-dce.cc:2206
0x1314c1a substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
        ../../gcc-trunk/gcc/tree-ssa-propagate.cc:1001
0x1242db8 ccp_finalize
        ../../gcc-trunk/gcc/tree-ssa-ccp.cc:1031
0x1243468 do_ssa_ccp
        ../../gcc-trunk/gcc/tree-ssa-ccp.cc:2980
0x1243468 execute
        ../../gcc-trunk/gcc/tree-ssa-ccp.cc:3025
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.
[514] % 
[514] % cat small.c
int printf(const char *, ...);
int a, b, c, d, e;
int main() {
  long g;
  int h = a, i;
  if (e)
    goto j;
  i = 0;
  for (; i < 1; i++) {
    int k = d | c, l = ~a;
    if (k) {
    m:
      e = 0;
    j:
      b = l;
      if (c)
        goto m;
    }
  }
  if (a) {
    while (a > 1)
      a--;
    g = a;
    printf("%d", h);
  }
  while (a)
    ;
  return 0;
}

[Bug tree-optimization/112333] ICE on valid code at -O2 and -O3: Segmentation fault

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112333

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.

*** This bug has been marked as a duplicate of bug 112320 ***