[Bug middle-end/41317] folding causes strict aliasing violation

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2009-11-09 19:38 -------
Subject: Bug 41317

Author: jakub
Date: Mon Nov  9 19:38:29 2009
New Revision: 154046

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=154046
Log:
        PR middle-end/40946
        Backport from mainline
        2009-09-09  Richard Guenther  <rguenther@suse.de>

        PR middle-end/41317
        * tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Remove
        code dealing with plain pointer bases.
        (maybe_fold_offset_to_reference): Likewise.
        (maybe_fold_stmt_addition): Adjust.

        PR middle-end/40946
        * gcc.dg/pr40946.c: New test.

        Backport from mainline
        2009-09-09  Richard Guenther  <rguenther@suse.de>

        PR middle-end/41317
        * gcc.c-torture/execute/pr41317.c: New testcase.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr41317.c
    branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr40946.c
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_4-branch/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41317