From: Khoo Yit Phang <khooyp@cs.umd.edu>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: Khoo Yit Phang <khooyp@cs.umd.edu>, Hui Zhu <teawater@gmail.com>,
gdb@sourceware.org
Subject: Re: Disable -lmcheck when Python has threads (Re: [BUG] gdb crash when "python import gtk")
Date: Thu, 30 Aug 2012 16:09:00 -0000 [thread overview]
Message-ID: <41429A68-82EE-4B57-BAB3-559D2907A71B@cs.umd.edu> (raw)
In-Reply-To: <20120830160438.GA25469@host2.jankratochvil.net>
Hi,
On Aug 30, 2012, at 12:04 PM, Jan Kratochvil wrote:
> Hi,
>
> On Thu, 30 Aug 2012 18:00:46 +0200, Khoo Yit Phang wrote:
>> I ran into a similar issue as below and tracked it down: the "memory
>> clobbered before allocated block" (and other related messages) because
>> -lmcheck is not thread safe, and triggers spuriously when threads are used
>> in Python (e.g., the "gtk" module).
>
> this needs some references to glibc/gtk/python maintainers statements etc.
>
> -lmcheck is AFAIK thread safe in glibc itself.
-lmcheck is definitely not thread safe, at least as of glibc 2.13 (Ubuntu 11.04). See the first answer of http://stackoverflow.com/questions/314931/glibcs-lmcheck-option-and-multithreading.
Yit
August 30, 2012
next prev parent reply other threads:[~2012-08-30 16:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-19 5:26 [BUG] gdb crash when "python import gtk" Hui Zhu
2012-07-19 7:16 ` Hui Zhu
2012-07-19 7:21 ` Phil Muldoon
2012-07-19 7:40 ` Jan Kratochvil
2012-07-19 7:54 ` Hui Zhu
[not found] ` <A681786A-58A1-41E6-8410-8EBD8330E6BE@cs.umd.edu>
2012-08-30 16:05 ` Disable -lmcheck when Python has threads (Re: [BUG] gdb crash when "python import gtk") Jan Kratochvil
2012-08-30 16:07 ` Jan Kratochvil
2012-08-30 16:09 ` Khoo Yit Phang [this message]
2012-08-30 16:11 ` Khoo Yit Phang
2012-08-30 16:41 ` Khoo Yit Phang
2012-09-06 19:30 ` Tom Tromey
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