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* [Bug tree-optimization/112827] New: ICE on valid code at -O1 on x86_64-linux-gnu: Segmentation fault
@ 2023-12-02 18:43 zhendong.su at inf dot ethz.ch
  2023-12-02 18:50 ` [Bug tree-optimization/112827] [14 Regression] " pinskia at gcc dot gnu.org
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2023-12-02 18:43 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112827

            Bug ID: 112827
           Summary: ICE on valid code at -O1 on x86_64-linux-gnu:
                    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: ---

This appears to be a recent regression as it does not reproduce with 13.2. 

Compiler Explorer: https://godbolt.org/z/4EhdjPE6o

[507] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../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 20231202 (experimental) (GCC) 
[508] % 
[508] % gcctk -O1 small.c
during GIMPLE pass: sccp
small.c: In function ‘main’:
small.c:2:5: internal compiler error: Segmentation fault
    2 | int main() {
      |     ^~~~
0x105e273 crash_signal
        ../../gcc-trunk/gcc/toplev.cc:316
0x1149492 gimple_bb(gimple const*)
        ../../gcc-trunk/gcc/gimple.h:1908
0x1149492 instantiate_scev_name
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2263
0x1149492 instantiate_scev_r
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2637
0x1149dee instantiate_scev(edge_def*, loop*, tree_node*)
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2719
0x114bae9 instantiate_parameters(loop*, tree_node*)
        ../../gcc-trunk/gcc/tree-scalar-evolution.h:64
0x114bae9 simplify_peeled_chrec
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1344
0x11488a6 analyze_evolution_in_loop
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1455
0x11488a6 interpret_loop_phi
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1587
0x11488a6 analyze_scalar_evolution_1
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1975
0x114849a analyze_scalar_evolution_1
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1958
0x1148e24 analyze_scalar_evolution(loop*, tree_node*)
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039
0x11483ee interpret_condition_phi
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1611
0x11483ee analyze_scalar_evolution_1
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1977
0x1148e24 analyze_scalar_evolution(loop*, tree_node*)
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039
0x114abd2 interpret_rhs_expr
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1641
0x1148579 interpret_gimple_assign
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1919
0x1148579 analyze_scalar_evolution_1
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1970
0x1148e24 analyze_scalar_evolution(loop*, tree_node*)
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039
0x114abd2 interpret_rhs_expr
        ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1641
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.
[509] % 
[509] % cat small.c
int a, b, c, d, e;
int main() {
  for (; c; c++) {
    for (a = 0; a < 2; a++)
      ;
    for (; b; b++) {
      e = d;
      d = a;
    }
  }
  return 0;
}

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2023-12-09 15:55 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-12-02 18:43 [Bug tree-optimization/112827] New: ICE on valid code at -O1 on x86_64-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
2023-12-02 18:50 ` [Bug tree-optimization/112827] [14 Regression] " pinskia at gcc dot gnu.org
2023-12-03  9:18 ` zhendong.su at inf dot ethz.ch
2023-12-04  7:04 ` rguenth at gcc dot gnu.org
2023-12-04  9:44 ` rguenth at gcc dot gnu.org
2023-12-04 11:54 ` cvs-commit at gcc dot gnu.org
2023-12-04 11:54 ` rguenth at gcc dot gnu.org
2023-12-05  7:30 ` cvs-commit at gcc dot gnu.org
2023-12-09 15:55 ` jakub at gcc dot gnu.org

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