Date: Tue, 15 Sep 1998 12:22:11 +0200 (CEST) From: Konrad Heuer <kheuer@gwdu60.gwdg.de> To: freebsd-hackers@FreeBSD.ORG Subject: Catching SIGSEGV Message-ID: <Pine.BSF.3.96.980915114921.5972A-100000@gwdu60.gwdg.de>
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May I ask my question here although it's not correlated to FreeBSD
development?
I write a program which shall run under FreeBSD and want to catch SIGSEGV
to count these events. So the program is like this:
int nsegv = 0;
int *ptr;
int zero = 0;
void sighdl ( int sig )
{
ptr = &zero;
nsegv++;
}
int dowork ( )
{
int buf;
signal(SIGSEGV, sighdl);
ptr = InvalidAddress;
buf = *ptr;
}
Ok, the signal handler gets called, ptr will be reset to a legal address,
but nevertheless after returning from the signal handler it will be called
again immediately resulting in an infinite loop.
Where's my mistake? What can I do to prevent that loop?
Thanks for any reply.
Regards
Konrad Heuer
// Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH
// Goettingen (GWDG), Am Fassberg, D-37077 Goettingen, Germany
//
// kheuer@gwdu60.gwdg.de
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