[Bug tree-optimization/55832] New: ICE in fold_convert_loc, at fold-const.c:1967

[antoine.balestrat at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55832

             Bug #: 55832
           Summary: ICE in fold_convert_loc, at fold-const.c:1967
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: antoine.balest...@gmail.com


Hello ! Even though I've seen quite a lot of possible duplicates, I was unable
to determine whether any of them were due to the same problem. So let's file a
new bug report and sorry if this is a dup :-)
I'm using GCC 4.8.0 as of 20121231.

$ cat fold.c
int g, b;

void f(void)
{
    int a = 0;
    unsigned char c;
    unsigned short d = 0, *p = &a;

    if(g)
        a--;

    if(b && a < (d = 1))
        for(;; a++);

    for(; a < 15; a++)
        b |= d <= c;

    *p ? : (g = 0);
}

$ xgcc -w -O3 fold.c
fold.c: In function ‘f’:
fold.c:3:6: internal compiler error: in fold_convert_loc, at fold-const.c:1967
 void f(void)
      ^
Please submit a full bug report,
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See <http://gcc.gnu.org/bugs.html> for instructions.