From: Ulrich Drepper <drepper@redhat.com>
To: "Kevin B. Hendricks" <kevin.hendricks@sympatico.ca>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Catching SIGSEGV with signal() in 2.6
Date: Mon, 05 Apr 2004 19:04:15 -0700 [thread overview]
Message-ID: <4072101F.3010603@redhat.com> (raw)
In-Reply-To: <200404052040.54301.kevin.hendricks@sympatico.ca>
Kevin B. Hendricks wrote:
> For some reason, the segfault generated by trying to write to address 0 can
> not be properly caught anymore (or at least it appears that way to me).
If the code would be correct you'd see the expected behavior.
> void SignalHdl( int sig )
> {
> bSignal = 1;
> longjmp( check_env, sig );
> }
Since you jump out of a signal handling you must use siglongmp
> int check( TestFunc func, void* p )
> {
> int result;
> bSignal = 0;
> if ( !setjmp( check_env ) )
And sigsetjmp(check_env, 1) here.
--
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
next prev parent reply other threads:[~2004-04-06 2:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-06 0:40 Catching SIGSEGV with signal() in 2.6 Kevin B. Hendricks
2004-04-06 2:04 ` Ulrich Drepper [this message]
2004-04-06 3:01 ` Kevin B. Hendricks
2004-04-06 4:08 ` Ulrich Drepper
2004-04-06 12:02 ` Kevin B. Hendricks
2004-04-06 15:53 ` Edgar Toernig
-- strict thread matches above, loose matches on Subject: below --
2004-04-05 15:25 bero
2004-04-05 18:17 ` Jamie Lokier
2004-04-05 19:16 ` Chris Friesen
2004-04-05 20:40 ` Jamie Lokier
2004-04-05 20:59 ` Richard B. Johnson
2004-04-05 21:11 ` Chris Friesen
2004-04-05 21:12 ` Jamie Lokier
2004-04-05 21:23 ` bero
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