https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105597

            Bug ID: 105597
           Summary: ice in type, at value-range.h:223
           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 52972
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52972&action=edit
C source code

For the attached C code, recent gcc trunk with flag -O2 does this:

during GIMPLE pass: vrp
mgpswindows.c: In function 'mgps_initpsdevice':
mgpswindows.c:48:5: internal compiler error: in type, at value-range.h:223
   48 | int mgps_initpsdevice()
      |     ^~~~~~~~~~~~~~~~~
0x1c9b178 irange::type() const
    ../../trunk.git/gcc/value-range.h:223
0x1c9b178 operator_minus::lhs_op1_relation(irange const&, irange const&, irange
const&, tree_code) const
    /home/dcb/gcc/working/gcc/../../trunk.git/gcc/range-op.cc:1349

I will have my usual go at reducing the code and finding a range of git
hashes where the problem starts.

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