[Bug analyzer/93938] New: ICE in validate, at analyzer/region-model.cc:231

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93938

            Bug ID: 93938
           Summary: ICE in validate, at analyzer/region-model.cc:231
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

gcc-10.0.1-alpha20200223 snapshot (g:3133bed5d0327e8a9cd0a601b7ecdb9de4fc825d)
ICEs when compiling gcc/testsuite/gcc.dg/pr70022.c w/ -O1 -fanalyzer:

% gcc-10.0.1 -O1 -fanalyzer -c gcc/testsuite/gcc.dg/pr70022.c
during IPA pass: analyzer
gcc/testsuite/gcc.dg/pr70022.c: In function 'foo':
gcc/testsuite/gcc.dg/pr70022.c:9:11: internal compiler error: in validate, at
analyzer/region-model.cc:231
    9 |   return v[~0UL];
      |          ~^~~~~~
0x71c9d4 ana::region_id::validate(ana::region_model const&) const
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:231
0x71cca0 ana::region_id::validate(ana::region_model const&) const
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:201
0x71cca0 ana::region::validate(ana::region_model const*) const
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:1368
0x11023fe ana::region_model::validate() const
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:3712
0x1106b3f ana::region_model::purge_unused_svalues(ana::purge_stats*,
ana::region_model_context*, ana::svalue_id*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:6261
0x10fb236 ana::program_state::prune_for_point(ana::exploded_graph&,
ana::program_point const&, ana::state_change*) const
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/program-state.cc:923
0x10e7dca ana::exploded_graph::get_or_create_node(ana::program_point const&,
ana::program_state const&, ana::state_change*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:1885
0x10eadf2 ana::exploded_graph::process_node(ana::exploded_node*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:2509
0x10eb5ca ana::exploded_graph::process_worklist()
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:2310
0x10ebcf9 ana::impl_run_checkers(ana::logger*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:3670
0x10ec79c ana::run_checkers()
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:3727
0x10e1ef8 execute
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/analyzer-pass.cc:84