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[Bug tree-optimization/35609] [4.3 Regression] "is used uninitialized in this function" should be may warning



------- Comment #7 from rguenth at gcc dot gnu dot org  2008-03-25 10:10 -------
Subject: Bug 35609

Author: rguenth
Date: Tue Mar 25 10:09:22 2008
New Revision: 133507

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133507
Log:
2008-03-25  Richard Guenther  <rguenther@suse.de>

        Backport from mainline:
        2008-03-19  Richard Guenther  <rguenther@suse.de>

        PR middle-end/35609
        * tree-ssa.c (walk_data): New structure.
        (warn_uninitialized_var): If not always_executed warn with "maybe"
        instead of "is".
        (execute_early_warn_uninitialized): Compute post-dominators.
        Initialize always_executed before processing each basic block.

        * gcc.dg/testsuite/uninit-15.c: New testcase.
        * gcc.dg/testsuite/uninit-16.c: Likewise.

Added:
    branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/uninit-15.c
      - copied unchanged from r133341, trunk/gcc/testsuite/gcc.dg/uninit-15.c
    branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/uninit-16.c
      - copied unchanged from r133341, trunk/gcc/testsuite/gcc.dg/uninit-16.c
Modified:
    branches/gcc-4_3-branch/gcc/ChangeLog
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_3-branch/gcc/tree-ssa.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35609


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