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Date: Tue, 23 Aug 2005 15:46:24 +0300
From: Pavel Tsekov <ptsekov AT gmx DOT net>
X-X-Sender: ptsekov AT mordor
To: znort AT pop DOT gmx DOT net
cc: cygwin AT cygwin DOT com
Subject: Re: signal trouble
In-Reply-To: <4a03a72c050823024012eb6fe7@mail.gmail.com>
Message-ID: <Pine.CYG.4.58.0508231543130.1556@mordor>
References: <4a03a72c050823024012eb6fe7 AT mail DOT gmail DOT com>
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Hello,

On Tue, 23 Aug 2005, znort wrote:

> Could you tell/help me why the little code :

[...]

> Under cygwin gcc version 3.4.4 (cygming special) and Linux with gcc 3.3.5
> same "strange" results... (no segmentation fault with cygwin anyway)
>
> (notes : Under Solaris x86 (gcc3.4.4) it works perfectly !?)
>
> I think I've forgotten something but where ?

See the attached file - it is modified version of your program. When the
second SIGSEGV occurs SIGSEGV signals are blocked. This is because you
exited the signal handler via a longjmp() and the signal mask is not
cleared. To do what you want you must use sigsetjmp/siglongjmp pair of
calls or remove SIGSEGV from the list of blocked signals.
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