[Bug tree-optimization/31940] New: ICE with -O -ftrapv -ftree-vrp on negation after comparison to INT_MIN

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

With gcc 4.1.2, this short code:

void f1(int);
void f2(int x)
{
    if (x != -2147483647 - 1)
        f1(-x);
}

causes GCC to segfault.

$ gcc/bin/gcc -c -O -ftree-vrp -ftrapv trapv-ice.c
trapv-ice.c: In function ‘f2’:
trapv-ice.c:3: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE with -O -ftrapv -ftree-vrp on negation after
                    comparison to INT_MIN
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: truedfx at gentoo dot org
  GCC host triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31940