public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/46167] New: [4.5/4.6 Regression] ICE: SEIGSEGV in flow_bb_inside_loop_p (cfgloop.c:776) with -O -ftree-vectorize Date: Mon, 25 Oct 2010 18:09:00 -0000 [thread overview] Message-ID: <bug-46167-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46167 Summary: [4.5/4.6 Regression] ICE: SEIGSEGV in flow_bb_inside_loop_p (cfgloop.c:776) with -O -ftree-vectorize Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: zsojka@seznam.cz Created attachment 22148 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22148 reduced testcase valgrind output : $ gcc -O -ftree-vectorize pr46167.c ==21601== Invalid read of size 8 ==21601== at 0x5933E8: flow_bb_inside_loop_p (cfgloop.c:776) ==21601== by 0x100FA9F: vect_recog_dot_prod_pattern (tree-vect-patterns.c:260) ==21601== by 0x10104A5: vect_pattern_recog (tree-vect-patterns.c:683) ==21601== by 0x9DE777: vect_analyze_loop (tree-vect-loop.c:1406) ==21601== by 0x9EC288: vectorize_loops (tree-vectorizer.c:219) ==21601== by 0x797A5E: execute_one_pass (passes.c:1560) ==21601== by 0x797CF4: execute_pass_list (passes.c:1615) ==21601== by 0x797D06: execute_pass_list (passes.c:1616) ==21601== by 0x797D06: execute_pass_list (passes.c:1616) ==21601== by 0x8E4B65: tree_rest_of_compilation (tree-optimize.c:422) ==21601== by 0xAAF281: cgraph_expand_function (cgraphunit.c:1494) ==21601== by 0xAB1849: cgraph_optimize (cgraphunit.c:1553) ==21601== Address 0x18 is not stack'd, malloc'd or (recently) free'd ==21601== pr46167.c: In function 'foo': pr46167.c:1:5: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Tested revisions: r165915 - crash r163636 - crash r161659 - OK r159696 - OK 4.5 r165781 - crash 4.5.1 - OK 4.4 r165754 - OK
next reply other threads:[~2010-10-25 18:09 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-10-25 18:09 zsojka at seznam dot cz [this message] 2010-10-26 8:25 ` [Bug tree-optimization/46167] [4.5/4.6 Regression] ICE: SIGSEGV " hjl.tools at gmail dot com 2010-10-26 8:27 ` hjl.tools at gmail dot com 2010-10-26 13:37 ` jakub at gcc dot gnu.org 2010-10-26 15:53 ` irar at gcc dot gnu.org 2010-10-26 20:16 ` irar at gcc dot gnu.org 2010-10-26 20:26 ` irar at il dot ibm.com
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-46167-4@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).