public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/55792] [4.8 Regression] Bad memory access with profiledbootstrap and LTO Date: Wed, 09 Jan 2013 00:23:00 -0000 [thread overview] Message-ID: <bug-55792-4-cQ3MFyQLXY@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-55792-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55792 --- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> 2013-01-09 00:22:18 UTC --- gimple_location is duplicated by: #1 0x0000000000751f32 in gimple_copy (stmt=0x7fffe8d75a00) at /export/gnu/import/git/gcc/gcc/gimple.c:2205 #2 0x00000000009c960d in gimple_duplicate_bb (bb=0x7fffe8d768f0) at /export/gnu/import/git/gcc/gcc/tree-cfg.c:5397 #3 0x00000000005b27a5 in duplicate_block (bb=0x7fffe8d768f0, e=0x7fffe8d793f0, after=0x7fffe8d76888) at /export/gnu/import/git/gcc/gcc/cfghooks.c:1012 #4 0x000000000099c511 in tail_duplicate () at /export/gnu/import/git/gcc/gcc/tracer.c:323 #5 0x000000000099c765 in tracer () at /export/gnu/import/git/gcc/gcc/tracer.c:380 #6 0x00000000008ae0e6 in execute_one_pass (pass=0x16d18a0 <pass_tracer>) at /export/gnu/import/git/gcc/gcc/passes.c:2335 #7 0x00000000008ae2da in execute_pass_list (pass=0x16d18a0 <pass_tracer>) at /export/gnu/import/git/gcc/gcc/passes.c:2383 #8 0x00000000008ae30b in execute_pass_list ( pass=0x16d07e0 <pass_all_optimizations>) at /export/gnu/import/git/gcc/gcc/passes.c:2384 #9 0x00000000005da366 in expand_function (node=0x7ffff17536f0) at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1641 #10 0x00000000005da821 in expand_all_functions () at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1745 (gdb) p copy $176 = (gimple) 0x7fffe8e0a320 (gdb) Later, the original location is removed: #0 remove_unused_locals () at /export/gnu/import/git/gcc/gcc/tree-ssa-live.c:793 #1 0x00000000008ad5cb in execute_function_todo (data=0x8800) at /export/gnu/import/git/gcc/gcc/passes.c:1952 #2 0x00000000008ac965 in do_per_function ( callback=0x8ad4ae <execute_function_todo(void*)>, data=0x8800) at /export/gnu/import/git/gcc/gcc/passes.c:1703 #3 0x00000000008ad765 in execute_todo (flags=34816) at /export/gnu/import/git/gcc/gcc/passes.c:2001 #4 0x00000000008ae175 in execute_one_pass ( pass=0x16d3220 <pass_cleanup_cfg_post_optimizing>) at /export/gnu/import/git/gcc/gcc/passes.c:2349 #5 0x00000000008ae2da in execute_pass_list ( pass=0x16d3220 <pass_cleanup_cfg_post_optimizing>) at /export/gnu/import/git/gcc/gcc/passes.c:2383 #6 0x00000000005da366 in expand_function (node=0x7ffff17536f0) at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1641 #7 0x00000000005da821 in expand_all_functions () at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1745 and freed. Then we copy the freed gimple_location: #0 expand_gimple_stmt_1 (stmt=0x7fffe8e0a320) at /export/gnu/import/git/gcc/gcc/cfgexpand.c:2202 #1 0x00000000005a7786 in expand_gimple_stmt (stmt=0x7fffe8e0a320) at /export/gnu/import/git/gcc/gcc/cfgexpand.c:2305 #2 0x00000000005ad975 in expand_gimple_basic_block (bb=0x7fffe8d76888, disable_tail_calls=false) at /export/gnu/import/git/gcc/gcc/cfgexpand.c:4084 #3 0x00000000005af426 in gimple_expand_cfg () at /export/gnu/import/git/gcc/gcc/cfgexpand.c:4603 #4 0x00000000008ae0e6 in execute_one_pass (pass=0x16ce300 <pass_expand>) at /export/gnu/import/git/gcc/gcc/passes.c:2335 #5 0x00000000008ae2da in execute_pass_list (pass=0x16ce300 <pass_expand>) at /export/gnu/import/git/gcc/gcc/passes.c:2383 #6 0x00000000005da366 in expand_function (node=0x7ffff17536f0) at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1641 #7 0x00000000005da821 in expand_all_functions () at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1745 #8 0x00000000005db2ab in compile () at /export/gnu/import/git/gcc/gcc/cgraphunit.c:2043 #9 0x000000000053c60a in lto_main () at /export/gnu/import/git/gcc/gcc/lto/lto.c:3390 #10 0x0000000000999401 in compile_file () at /export/gnu/import/git/gcc/gcc/toplev.c:545
next prev parent reply other threads:[~2013-01-09 0:23 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-12-22 18:05 [Bug bootstrap/55792] New: " hjl.tools at gmail dot com 2012-12-22 18:43 ` [Bug bootstrap/55792] " hjl.tools at gmail dot com 2012-12-22 20:13 ` hjl.tools at gmail dot com 2013-01-03 19:03 ` hjl.tools at gmail dot com 2013-01-04 23:58 ` hjl.tools at gmail dot com 2013-01-05 16:47 ` hjl.tools at gmail dot com 2013-01-05 17:21 ` hjl.tools at gmail dot com 2013-01-07 10:13 ` rguenth at gcc dot gnu.org 2013-01-07 15:41 ` hjl.tools at gmail dot com 2013-01-07 16:02 ` rguenth at gcc dot gnu.org 2013-01-07 16:03 ` [Bug bootstrap/55792] [4.8 Regression] " rguenth at gcc dot gnu.org 2013-01-07 17:55 ` dnovillo at gcc dot gnu.org 2013-01-07 22:14 ` hjl.tools at gmail dot com 2013-01-07 23:30 ` hjl.tools at gmail dot com 2013-01-08 1:20 ` hjl.tools at gmail dot com 2013-01-08 10:17 ` rguenth at gcc dot gnu.org 2013-01-08 17:13 ` hjl.tools at gmail dot com 2013-01-09 0:23 ` hjl.tools at gmail dot com [this message] 2013-01-09 9:32 ` rguenth at gcc dot gnu.org 2013-01-09 16:11 ` hjl.tools at gmail dot com 2013-01-09 17:13 ` hjl.tools at gmail dot com 2013-01-09 18:22 ` rguenth at gcc dot gnu.org 2013-01-09 18:38 ` hjl.tools at gmail dot com 2013-01-09 22:52 ` hjl.tools at gmail dot com 2013-01-10 11:30 ` rguenth at gcc dot gnu.org 2013-01-10 12:16 ` rguenth at gcc dot gnu.org 2013-01-10 13:43 ` rguenth at gcc dot gnu.org 2013-01-10 14:08 ` rguenth at gcc dot gnu.org 2013-01-10 14:12 ` rguenth at gcc dot gnu.org 2013-01-10 15:29 ` rguenth at gcc dot gnu.org 2013-01-10 15:35 ` rguenth at gcc dot gnu.org 2013-01-10 17:03 ` hjl.tools at gmail dot com 2013-01-10 19:36 ` hjl.tools at gmail dot com 2013-01-11 17:37 ` hubicka at ucw dot cz 2013-01-14 13:43 ` rguenth at gcc dot gnu.org 2013-01-14 13:50 ` rguenth at gcc dot gnu.org 2013-01-14 13:51 ` rguenth at gcc dot gnu.org 2013-01-15 14:32 ` rguenth at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-55792-4-cQ3MFyQLXY@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).