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From: "andersk at mit dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61964] [4.8 regression] krb5 database propagation enters infinite loop; reduced test case
Date: Wed, 30 Jul 2014 20:21:00 -0000 [thread overview]
Message-ID: <bug-61964-4-0fgZ6OVEBX@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-61964-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61964
--- Comment #3 from Anders Kaseorg <andersk at mit dot edu> ---
(In reply to Richard Biener from comment #1)
> The testcase is violating strict-aliasing rules as you access a struct head
> as struct node here:
Agree with ghudson here: n->prev points to &heads[2], not &heads[0].
Although assigning a casted struct head * to a struct node * is arguably
sloppy, the standard does not prohibit it, as long as it is never dereferenced
in that form.
next prev parent reply other threads:[~2014-07-30 20:21 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 13:21 [Bug tree-optimization/61964] New: " andersk at mit dot edu
2014-07-30 14:31 ` [Bug tree-optimization/61964] " ghudson at mit dot edu
2014-07-30 20:21 ` andersk at mit dot edu [this message]
2014-07-31 4:20 ` andersk at mit dot edu
2014-07-31 9:29 ` mikpelinux at gmail dot com
2014-07-31 9:48 ` schwab@linux-m68k.org
2014-07-31 10:05 ` [Bug tree-optimization/61964] [4.8/4.9/4.10 " rguenth at gcc dot gnu.org
2014-07-31 12:20 ` vries at gcc dot gnu.org
2014-07-31 12:24 ` rguenther at suse dot de
2014-07-31 14:07 ` rguenth at gcc dot gnu.org
2014-07-31 14:10 ` [Bug tree-optimization/61964] [4.8/4.9 " rguenth at gcc dot gnu.org
2014-07-31 17:09 ` vries at gcc dot gnu.org
2014-08-01 7:32 ` rguenth at gcc dot gnu.org
2014-08-01 7:36 ` rguenth at gcc dot gnu.org
2014-08-01 7:40 ` rguenth at gcc dot gnu.org
2014-08-01 8:17 ` rguenth at gcc dot gnu.org
2014-08-01 8:18 ` andersk at mit dot edu
2014-08-04 0:25 ` vries at gcc dot gnu.org
2014-08-18 8:38 ` vries at gcc dot gnu.org
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