> cat bug.i
void f(int i, int j, int k) {
        if (i == 0) k = 0;
        if (j == 0) __builtin_unreachable();
        if (k == 0) __builtin_unreachable();
}

> gcc -O2 -ftracer bug.i
bug.i: In function ‘f’:
bug.i:5:1: internal compiler error: Segmentation fault

Using SVN revision 148787.


-- 
           Summary: ICE with -O2 -ftracer __builtin_unreachable()
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: wouter dot vermaelen at scarlet dot be


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40519