[Bug tree-optimization/49218] Incorrect optimization of a 'for' loop creates an infinite loop

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49218

--- Comment #11 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-30 
11:17:38 UTC ---
Author: rguenth
Date: Mon May 30 11:17:35 2011
New Revision: 174430

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174430
Log:
2011-05-30  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/49218
    * tree-vrp.c (adjust_range_with_scev): Properly check whether
    overflow occured.

    * gcc.c-torture/execute/pr49218.c: New testcase.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.c-torture/execute/pr49218.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_6-branch/gcc/tree-vrp.c