Hello!
I just installed the latest unstable version of Debian on Saturday
and am either doing something wrong or I have found a bug. On top
of this, I have followed the mini-howto for upgrading from libc5
to libc6 and installed all of the suggested packages.
I've narrowed the problem down to compiling the following code
with g++:
#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
void dummy_function() {
pthread_mutexattr_t mutexattr;
pthread_mutexattr_init(&mutexattr);
}
int main() {
int childpid;
childpid = fork();
printf("After fork.. childpid = %d\n", childpid);
return 0;
}
Now, normally this should run with the following expected output:
After fork.. childpid = 9909
After fork.. childpid = 0
But, when I run it I only get
After fork.. childpid = 9909
>From this, it is obvious that the child process is not actually
running and the child dumps a core file.
I've been compiling this as follows:
g++ -c file.c
g++ -o file file.o -lpthread
Now, my understanding was that pthread was supposed to be for libc5,
but, it doesn't seem to compile at all if I don't include this.
I played a little more with this and have found that the following
does work:
gcc -o file file.o -lpthread -lg++
but, the instant I add in:
gcc -o file file.o -lpthread -lg++ -lstdc++
(which is what the g++ expands to) and then the same problem occurs.
Any ideas? I tried adding the -D_REENTRANT option as well as suggested
by the pthreads FAQ but still no success. And yes, my actual code
is C++ (though this snipit isn't) so compiling it without the g++ and
stdc++ libraries must be done.
Oh, and I should mention some of my current configuration:
Linux 2.0.29
libc6 2.0.5c-0.1
libc6-dev 2.0.5c-0.1
libg++272 2.7.2.8-0.1
ldso 1.9.6-2
libc5 5.4.33-7
libreadlineg 2.1-7
libreadline2 2.1-7
Any help or suggestions would be appreciated because otherwise
I'm stuck and can't continue on with my software development.
Cheers!
Richard..
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Richard Dansereau
Email: [EMAIL PROTECTED] Home page: http://pobox.com/~rdanse
Electrical and Computer Engineering - University of Manitoba - Canada
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