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/64121] New: [5 Regression] ICE: SSA corruption with -O -fsanitize=undefined
Date: Sun, 30 Nov 2014 09:33:00 -0000 [thread overview]
Message-ID: <bug-64121-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64121
Bug ID: 64121
Summary: [5 Regression] ICE: SSA corruption with -O
-fsanitize=undefined
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Created attachment 34145
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34145&action=edit
reduced testcase
Compiler output:
$ gcc -O -fsanitize=undefined testcase.c
Unable to coalesce ssa_names 1 and 6 which are marked as MUST COALESCE.
xp_1(ab) and xp_6(ab)
testcase.c: In function 'execute':
testcase.c:4:1: internal compiler error: SSA corruption
execute (int *ip, int x)
^
0xd2c828 fail_abnormal_edge_coalesce
/mnt/svn/gcc-trunk/gcc/tree-ssa-coalesce.c:921
0xd2c828 coalesce_partitions
/mnt/svn/gcc-trunk/gcc/tree-ssa-coalesce.c:1219
0xd2c828 coalesce_ssa_name()
/mnt/svn/gcc-trunk/gcc/tree-ssa-coalesce.c:1364
0xcc27cf remove_ssa_form
/mnt/svn/gcc-trunk/gcc/tree-outof-ssa.c:999
0xcc27cf rewrite_out_of_ssa(ssaexpand*)
/mnt/svn/gcc-trunk/gcc/tree-outof-ssa.c:1233
0x7d3c37 execute
/mnt/svn/gcc-trunk/gcc/cfgexpand.c:5703
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r218181 - ICE
4_9 r218177 - OK
next reply other threads:[~2014-11-30 9:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-30 9:33 zsojka at seznam dot cz [this message]
2014-11-30 10:04 ` [Bug tree-optimization/64121] " mpolacek at gcc dot gnu.org
2014-12-01 10:00 ` rguenth at gcc dot gnu.org
2014-12-01 10:00 ` rguenth at gcc dot gnu.org
2014-12-01 10:13 ` mpolacek at gcc dot gnu.org
2014-12-01 12:45 ` jakub at gcc dot gnu.org
2014-12-01 12:54 ` mpolacek at gcc dot gnu.org
2014-12-01 13:02 ` jakub at gcc dot gnu.org
2014-12-01 13:11 ` mpolacek at gcc dot gnu.org
2014-12-01 15:38 ` mpolacek at gcc dot gnu.org
2014-12-01 15:44 ` mpolacek 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-64121-4@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: link
Be 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).