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[Bug tree-optimization/35609] [4.3/4.4 Regression] "is used uninitialized in this function" should be may warning
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Mar 2008 10:45:37 -0000
- Subject: [Bug tree-optimization/35609] [4.3/4.4 Regression] "is used uninitialized in this function" should be may warning
- References: <bug-35609-9876@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from rguenth at gcc dot gnu dot org 2008-03-19 10:45 -------
Subject: Bug 35609
Author: rguenth
Date: Wed Mar 19 10:44:52 2008
New Revision: 133341
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133341
Log:
2008-03-19 Richard Guenther <rguenther@suse.de>
PR middle-end/35609
* tree-ssa.c (always_executed): New global flag.
(warn_uninitialized_var): If !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:
trunk/gcc/testsuite/gcc.dg/uninit-15.c
trunk/gcc/testsuite/gcc.dg/uninit-16.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35609