[Bug analyzer/96841] New: [11 Regression] ICE: tree check: expected integer_cst, have nop_expr in to_wide, at tree.h:5904

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96841

            Bug ID: 96841
           Summary: [11 Regression] ICE: tree check: expected integer_cst,
                    have nop_expr in to_wide, at tree.h:5904
           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: ---

gcc-11.0.0-alpha20200823 snapshot (g:87c753ac241f25d222d46ba1ac66ceba89d6a200)
ICEs when compiling the following testcase w/ -O1 -fanalyzer:

int
l8 (void);

__SIZE_TYPE__
malloc (__SIZE_TYPE__);

void
th (int *);

void
bv (__SIZE_TYPE__ ny)
{
  int ***mf;

  while (l8 ())
    {
      *mf = 0;
      (*mf)[ny] = (int *) malloc (sizeof (int));
      th ((*mf)[ny]);
    }
}

% gcc-11.0.0 -O1 -fanalyzer -w -c eswf7if4.c
during IPA pass: analyzer
eswf7if4.c:18:27: internal compiler error: tree check: expected integer_cst,
have nop_expr in to_wide, at tree.h:5904
   18 |       (*mf)[ny] = (int *) malloc (sizeof (int));
      |                           ^~~~~~~~~~~~~~~~~~~~~
0x6feeda tree_check_failed(tree_node const*, char const*, int, char const*,
...)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/tree.c:9714
0x5ef958 tree_check(tree_node const*, char const*, int, char const*, tree_code)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/tree.h:3551
0x5ef958 wi::to_wide(tree_node const*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/tree.h:5904
0x5f0070 wi::to_wide(tree_node const*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/tree.h:3418
0x5f0070 pp_c_integer_constant(c_pretty_printer*, tree_node*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/c-family/c-pretty-print.c:940
0x89bb09 c_pretty_printer::unary_expression(tree_node*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/c-family/c-pretty-print.c:1801
0x80284d c_tree_printer
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/c/c-objc-common.c:317
0x80284d c_tree_printer
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/c/c-objc-common.c:254
0x18a4ef5 pp_format(pretty_printer*, text_info*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/pretty-print.c:1475
0x185826b ana::evdesc::event_desc::formatted_print(char const*, ...) const
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/pending-diagnostic.cc:63
0x1845f24 ana::warning_event::get_desc(bool) const
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/checker-path.cc:870
0x1845bc2 ana::checker_event::prepare_for_emission(ana::checker_path*,
ana::pending_diagnostic*, diagnostic_event_id_t)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/checker-path.cc:144
0x18556d1 ana::checker_path::prepare_for_emission(ana::pending_diagnostic*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/checker-path.h:498
0x18556d1 ana::diagnostic_manager::emit_saved_diagnostic(ana::exploded_graph
const&, ana::saved_diagnostic const&, ana::exploded_path const&, gimple const*,
int)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/diagnostic-manager.cc:568
0x1856fef ana::dedupe_winners::emit_best(ana::diagnostic_manager*,
ana::exploded_graph const&)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/diagnostic-manager.cc:469
0x1855a9a ana::diagnostic_manager::emit_saved_diagnostics(ana::exploded_graph
const&)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/diagnostic-manager.cc:522
0x10fa2a4 ana::impl_run_checkers(ana::logger*)
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/engine.cc:4121
0x10faeac ana::run_checkers()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/engine.cc:4175
0x10ef828 execute
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/analyzer/analyzer-pass.cc:84