[Bug analyzer/97668] New: [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[Bug analyzer/97668] New: [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

            Bug ID: 97668
           Summary: [11 Regression] ICE in cmp_cst, at
                    analyzer/svalue.cc:283
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

Created attachment 49484
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49484&action=edit
Testcase

gfortran-11.0.0-alpha20201101 snapshot
(g:590febb5f6624f78b36402a7c9a9c318978f1efa) ICEs when compiling the attached
testcase w/ -O1 -fanalyzer:

% powerpc-e300c3-linux-gnu-gfortran-11.0.0 -std=legacy -O1 -fanalyzer -c
d9xjyayq.f
during IPA pass: analyzer
d9xjyayq.f:6:16:

    6 |       DO 136 IG=IS,1
      |                ^
internal compiler error: in cmp_cst, at analyzer/svalue.cc:283
0x71ef8e cmp_cst
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/svalue.cc:283
0x18aca58 cmp1<sort_ctx>
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:153
0x18acab4 netsort<sort_ctx>
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:170
0x18acab4 mergesort<sort_ctx>
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:207
0x18ad0f2 gcc_qsort(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:266
0x183636a ana::constraint_manager::canonicalize()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/constraint-manager.cc:1713
0x1211e95 ana::program_state::prune_for_point(ana::exploded_graph&,
ana::program_point const&, ana::exploded_node const*) const
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/program-state.cc:1049
0x11fcf02 ana::exploded_graph::get_or_create_node(ana::program_point const&,
ana::program_state const&, ana::exploded_node const*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2045
0x11ffae4 ana::exploded_graph::process_node(ana::exploded_node*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2850
0x1200672 ana::exploded_graph::process_worklist()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2523
0x120282b ana::impl_run_checkers(ana::logger*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:4658
0x1203721 ana::run_checkers()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:4729
0x11f6748 execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/analyzer-pass.cc:84

(While my target here is powerpc, the ICE should not be target-specific.)

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.0

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2020-11-02
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r11-4435-gbf1b5dae440de888.

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
Finally, a C testcase:

void
wb (_Complex double jh)
{
  _Complex double af = 0.0;

  do
    {
      af += jh;
    }
  while (af != 0.0);
}

_Complex double
o6 (void)
{
  _Complex double ba = 0.0;

  for (;;)
    {
      wb (ba);
      ba = 1.0;
    }

  return ba;
}

% gcc-11.0.0 -O1 -fanalyzer -c nzttegjf.c
during IPA pass: analyzer
nzttegjf.c: In function 'wb':
nzttegjf.c:20:7: internal compiler error: in cmp_cst, at analyzer/svalue.cc:283
   20 |       wb (ba);
      |       ^~~~~~~
0x73dc66 cmp_cst
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/svalue.cc:283
0x19296e0 cmp1<sort_ctx>
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:153
0x1929734 netsort<sort_ctx>
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:170
0x1929734 mergesort<sort_ctx>
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:207
0x1929cc2 gcc_qsort(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/sort.cc:266
0x18c2311 vec<ana::svalue const*, va_heap, vl_embed>::qsort(int (*)(void
const*, void const*))
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/vec.h:1138
0x18c2311 vec<ana::svalue const*, va_heap, vl_ptr>::qsort(int (*)(void const*,
void const*))
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/vec.h:2031
0x18c2311 ana::equiv_class::canonicalize()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/constraint-manager.cc:431
0x18c2311 ana::constraint_manager::canonicalize()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/constraint-manager.cc:1713
0x115d881 ana::program_state::prune_for_point(ana::exploded_graph&,
ana::program_point const&, ana::exploded_node const*) const
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/program-state.cc:1049
0x1149245 ana::exploded_graph::get_or_create_node(ana::program_point const&,
ana::program_state const&, ana::exploded_node const*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2045
0x114c6cd ana::exploded_graph::process_node(ana::exploded_node*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2850
0x114d47a ana::exploded_graph::process_worklist()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:2523
0x114f59a ana::impl_run_checkers(ana::logger*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:4658
0x115036c ana::run_checkers()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/engine.cc:4729
0x11424e8 execute
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201101/work/gcc-11-20201101/gcc/analyzer/analyzer-pass.cc:84

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by David Malcolm <dmalcolm@gcc.gnu.org>:

https://gcc.gnu.org/g:54cbdb528df16686290ad26e2130a1896915639d

commit r11-4740-g54cbdb528df16686290ad26e2130a1896915639d
Author: David Malcolm <dmalcolm@redhat.com>
Date:   Thu Nov 5 09:54:58 2020 -0500

    analyzer: fix ICE comparing COMPLEX_CSTs [PR97668]

    gcc/analyzer/ChangeLog:
            PR analyzer/97668
            * svalue.cc (cmp_cst): Handle COMPLEX_CST.

    gcc/testsuite/ChangeLog:
            PR analyzer/97668
            * gcc.dg/analyzer/pr97668.c: New test.
            * gfortran.dg/analyzer/pr97668.f: New test.

[Bug analyzer/97668] [11 Regression] ICE in cmp_cst, at analyzer/svalue.cc:283

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97668

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks for filing this.  Should be fixed by the above commit.