Subj : pthread_once() does not update __pthread_once_pad
To   : comp.programming.threads
From : Scott Shinault
Date : Sat Jan 29 2005 02:58 pm

 Having a problem where pthread_once() gets called, but does not update the
__pthread_once_pad[3] to show that the init routine was called for the
associated pthread_once_t var.

The init routine gets called, and the resultant pthread_key_t variable can
be used to call pthread_setspecific(), but a resultant pthread_getspecific()
will fail. I can see in gdb that the __pthread_once_pad[3] value is
unchanged.

This is happening on SOlaris 9 SPARC with gcc 3.3.2, and on Solaris 8 x86.
The code works on Linux with an older gcc and also on Solaris 8 SPARC with
an older gcc.

We can write our pthread_once() to increment the __pthread_once_pad[3] value
and call the init function and it will work fine.

Any clues?

.