[Bug tree-optimization/31715] [4.3 Regression] Array calculation done incorrectly

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2007-04-27 12:42 -------
Subject: Bug 31715

Author: rguenth
Date: Fri Apr 27 12:42:43 2007
New Revision: 124216

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124216
Log:
2007-04-27  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/31715
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Make
        sure to do computation on the offset in an appropriate
        signed type.

        * gcc.dg/Warray-bounds-4.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31715