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[Bug tree-optimization/55079] [4.8 regression] false positive -Warray-bounds (also seen at -O3 bootstrap)
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 11 Dec 2012 10:06:20 +0000
- Subject: [Bug tree-optimization/55079] [4.8 regression] false positive -Warray-bounds (also seen at -O3 bootstrap)
- Auto-submitted: auto-generated
- References: <bug-55079-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55079
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-11 10:06:20 UTC ---
Author: rguenth
Date: Tue Dec 11 10:06:15 2012
New Revision: 194388
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194388
Log:
2012-12-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/55079
* tree-vrp.c (extract_range_from_binary_expr_1): Handle MAX/MIN_EXPR
for more cases.
(register_edge_assert_for_2): Register asserts for post-in/decrement
tests.
(check_array_ref): Dump what expression we emit array bound
warnings for.
(search_for_addr_array): Likewise.
* gcc.dg/Warray-bounds-9.c: New testcase.
* gcc.dg/Warray-bounds-10.c: Likewise.
* gcc.dg/tree-ssa/ssa-pre-1.c: Adjust.
Added:
trunk/gcc/testsuite/gcc.dg/Warray-bounds-10.c
trunk/gcc/testsuite/gcc.dg/Warray-bounds-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c