[Bug fortran/31262] New: -fno-range-check can trigger ICE

["fxcoudert at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

$ cat uu.f90 
  print *, 7_8*huge(0_8)+17_8
  end
$ gfortran -static uu.f90 -fno-range-check
uu.f90: In function ?MAIN__?:
uu.f90:1: internal compiler error: in gfc_conv_mpz_to_tree, at
fortran/trans-const.c:183

There's an assertion in gfc_conv_mpz_to_tree:
      /* We assume that all numbers are in range for its type, and that
         we never create a type larger than 2*HWI, which is the largest
         that the middle-end can handle.  */

It's wrong. Now that we have -fno-range-check, we should handle this in some
way, probably by a modulo operation.


-- 
           Summary: -fno-range-check can trigger ICE
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: fxcoudert at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31262