[Bug tree-optimization/56264] New: ICE in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:557

["antoine.balestrat at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56264

             Bug #: 56264
           Summary: ICE in check_loop_closed_ssa_use, at
                    tree-ssa-loop-manip.c:557
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: antoine.balestrat@gmail.com


Using GCC 4.8.0 as of 220130209 :

$ cat check.c
int a, b, c;

void f(void)
{
    if(b)
    {
        for(a = 0; a < 1; a++)
lbl:
            c = c && b ? : 0;

        c = 0;
        goto lbl;
    }

    if(a)
        goto lbl;
}

$ xgcc -w -O2 -funswitch-loops check.c
check.c: In function âfâ:
check.c:3:6: internal compiler error: in check_loop_closed_ssa_use, at 
tree-ssa-loop-manip.c:557
 void f(void)
      ^
0x9d90f6 check_loop_closed_ssa_use
    ../../srcdir/gcc/tree-ssa-loop-manip.c:556
0x9dac42 verify_loop_closed_ssa(bool)
    ../../srcdir/gcc/tree-ssa-loop-manip.c:602
0x83eede execute_function_todo
    ../../srcdir/gcc/passes.c:1974
0x83f757 execute_todo
    ../../srcdir/gcc/passes.c:1999
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