From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5969 invoked by alias); 28 Nov 2012 08:51:50 -0000 Received: (qmail 5912 invoked by uid 48); 28 Nov 2012 08:51:28 -0000 From: "markus at trippelsdorf dot de" To: gcc-bugs@gcc.gnu.org Subject: [Bug other/55358] Valgrind errors Date: Wed, 28 Nov 2012 08:51:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: other X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: markus at trippelsdorf dot de X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-11/txt/msg02680.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55358 --- Comment #6 from Markus Trippelsdorf 2012-11-28 08:51:26 UTC --- Created attachment 28818 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28818 stl benchmark The last issue can be reproduced with an old C++ STL benchmark from Stepanov and Stroustrup (attached): markus@x4 ~ % /var/tmp/gcc_valgrind/usr/local/bin/g++ -O2 -fprofile-generate bench.cpp markus@x4 ~ % ./a.out size array vector with pointers vector with iterators deque list set multiset 10 0.18 0.18 0.19 0.44 1.08 0.67 1.08 ... markus@x4 ~ % /var/tmp/gcc_valgrind/usr/local/bin/g++ -O2 -fprofile-use -flto bench.cpp ==22679== Invalid write of size 8 ==22679== at 0x68007D: iterative_hash_canonical_type(tree_node*, unsigned int) (gimple.c:3170) ==22679== by 0xD611C0: htab_find_slot (hashtab.c:712) ==22679== by 0x68A918: gimple_register_canonical_type(tree_node*) (gimple.c:3438) ==22679== by 0x4D093B: lto_file_read(lto_file_struct*, _IO_FILE*, int*) (lto.c:2050) ==22679== by 0x4D25EA: lto_main() (lto.c:2966) ==22679== by 0x82A5B5: compile_file() (toplev.c:545) ==22679== by 0x82C4D9: toplev_main(int, char**) (toplev.c:1884) ==22679== by 0x4ECD884: (below main) (libc-start.c:258) ==22679== Address 0x4031e98 is not stack'd, malloc'd or (recently) free'd ==22679==