Re: popen/pthread/static-libs bug

[Davy Durham]

Now, for anyone who's watching I noticed after comparing an strace of 
the program below that the dynamically linked one does a fork() in the 
popen and the statically linked one does a vfork().  Perhaps the 
threading is doing something that shouldn't be done after a vfork(), but 
why one calls fork() and the other vfork() just because of the different 
linking I don't know.. but it still looks like a bug or some workaround 
that needs to be mentioned in the man pages (which I don't see)

-- Davy

David Durham wrote:

> Actually.. this source code can even be reduced to (I don't know why I 
> had the pthread_join in there.. it hangs at the pthread_create):
>
> #include <stdio.h>
> #include <pthread.h>
>
> void *func(void *temp)
> {
>     return NULL;
> }
>
> int main()
> {
>     pthread_t threadID;
>
>     popen("ls","r");
>
>     pthread_create(&threadID,NULL,func,NULL);
>     
>     return 0;
> }