[Bug tree-optimization/57685] New: GCC stuck in an infinite loop

[antoine.balestrat at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57685

            Bug ID: 57685
           Summary: GCC stuck in an infinite loop
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: antoine.balestrat at gmail dot com

Hello !
Using GCC 4.9.0 as of 20130623 :

$ cat inf.c
unsigned f(void)
{
    unsigned a;
    int b, c, d, e;

    for(c = 27; c < 40; c++)
        b |= d |= b;

    if(b)
        a = e;

    return a;
}

$ ulimit -t 60

$ xgcc -O3 inf.c
gcc: internal compiler error: CPU time limit exceeded (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.