[Bug c++/106824] New: ice in set_nan, at value-range.cc:283

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106824

            Bug ID: 106824
           Summary: ice in set_nan, at  value-range.cc:283
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 53535
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53535&action=edit
gzipped C++ source code

The attached C++ code does this with recent gcc:

./../include/fst/shortest-path.h:191:6: internal compiler error: in set_nan, at 
value-range.cc:283
0x13fcb6b frange::set_nan(fp_prop::kind)
        ../../trunk.git/gcc/value-range.cc:283
0x204ccb1 foperator_not_equal::op1_range(frange&, tree_node*, irange const&,
fra
nge const&, relation_kind_t) const
        ../../trunk.git/gcc/range-op-float.cc:468
0x1f2298b gimple_range_calc_op1(vrange&, gimple const*, vrange const&, vrange
co
nst&)
        ../../trunk.git/gcc/gimple-range-gori.cc:0
0x1f25a6d gori_compute::compute_operand1_range(vrange&, gimple*, vrange const&, 
tree_node*, fur_source&)

Git range seems to be 152895769581468e..4fbe3e6aa74dae5c

Flags required are -march=bdver2 -O2. I have a reduction running.