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RE: SIGSEGV when called sem_init() with gdb.
- From: "lhall at pop dot ma dot ultranet dot com" <lhall at pop dot ma dot ultranet dot com>
- To: oreste dot bernardi at st dot com, cygwin at cygwin dot com
- Date: Tue, 10 Dec 2002 11:03:41 -0500
- Subject: RE: SIGSEGV when called sem_init() with gdb.
- Reply-to: lhall at rfk dot com
Rerun setup and update your gdb. If that doesn't help,
let the list know.
Larry
Original Message:
-----------------
From: Oreste Bernardi oreste.bernardi@st.com
Date: Tue, 10 Dec 2002 16:01:16 +0100
To: cygwin@cygwin.com
Subject: SIGSEGV when called sem_init() with gdb.
Dear, all
#include <semaphore.h>
int main () {
int p;
sem_t sem;
int i=0,d;
//sem=(sem_t)NULL; //With this There isn't any problem
sem_init (&sem,0,1);
sem_post (&sem);
sem_wait(&sem);
return i;
}
cygwin 1.3.17-1
gcc 3.2-3
gdb 20010428-3
When executing this source code with gdb I get an SIGSEGV signal when
sem_init() function is called.
If I continue on, program works fine.
If program is not executed from gdb, it works without any error.
If I initialize it with NULL, I don't get any error.
I think that is the same behavior as described by following mail:
http://sources.redhat.com/ml/cygwin/2002-10/msg00956.html
Is this true ?
To avoid annoying gdb error message, is my solution ("sem=(sem_t)NULL")
reliable and portable ?
Best Regards
Oreste Bernardi
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