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From: "mikpe at it dot uu dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/37954] odd sized packed structures passed by value, under ARM, cause lockup of application
Date: Wed, 21 Oct 2009 12:20:00 -0000	[thread overview]
Message-ID: <20091021121952.14986.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37954-16876@http.gcc.gnu.org/bugzilla/>



------- Comment #8 from mikpe at it dot uu dot se  2009-10-21 12:19 -------
I can reproduce the misalignment exceptions on armv5tel-linux-gnueabi with
gcc-4.3.4 at -O0 but not with gcc-4.4.2.  The loop in main() which iterates
over the packed array creates a misaligned pointer from which it performs
word-sized loads, which causes misalignment exceptions.  gcc-4.4.2 generates
very different code which doesn't make assumptions about alignment.


-- 

mikpe at it dot uu dot se changed:

           What    |Removed                     |Added
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                 CC|                            |mikpe at it dot uu dot se


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37954


  parent reply	other threads:[~2009-10-21 12:20 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-29 19:43 [Bug c/37954] New: odd sized packed structures, " damon dot michaels at navico dot com
2008-10-29 19:44 ` [Bug c/37954] " pinskia at gcc dot gnu dot org
2008-10-29 19:49 ` damon dot michaels at navico dot com
2008-10-29 19:52 ` damon dot michaels at navico dot com
2008-10-29 19:53 ` damon dot michaels at navico dot com
2008-10-29 19:53 ` damon dot michaels at navico dot com
2009-10-21  9:36 ` [Bug target/37954] odd sized packed structures passed by value, " maurice35 dot david at laposte dot net
2009-10-21  9:37 ` maurice35 dot david at laposte dot net
2009-10-21 12:20 ` mikpe at it dot uu dot se [this message]
2009-10-21 14:47 ` maurice35 dot david at laposte dot net
2009-10-21 19:47 ` mikpe at it dot uu dot se
2009-10-22 17:55 ` mikpe at it dot uu dot se
2009-10-23  0:29 ` mikpe at it dot uu dot se
2009-10-23 12:49 ` mikpe at it dot uu dot se
2010-09-01 12:41 ` [Bug target/37954] [4.3 only] " ramana at gcc dot gnu dot org
     [not found] <bug-37954-4@http.gcc.gnu.org/bugzilla/>
2011-04-28 16:25 ` [Bug target/37954] " rguenth at gcc dot gnu.org
2015-03-12 11:29 ` ramana at gcc dot gnu.org
2015-04-30 11:15 ` amodra at gmail dot com

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