http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51296
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-11-28
14:22:24 UTC ---
(In reply to comment #14)
> > --- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-11-26
> > 15:18:40 UTC ---
> > Does this reduced test work with -std=gnu++11 -pthread ?
>
> Unfortunately not, I still get
>
> 22 : Invalid argument
IMHO it's fortunate since it's not just problem in the std::mutex code ;)
> Only if I add an explicit call to pthread_mutex_init does the testcase
> work.
Very strange, especially since the definitions you gave in comment 9 don't seem
to do anything complicated.
Does this work?
#include <stdio.h>
#include <string.h>
#include <pthread.h>
struct M {
pthread_mutex_t m;
M() noexcept {
pthread_mutex_t tmp = PTHREAD_MUTEX_INITIALIZER;
m = tmp;
}
};
int main()
{
M m;
int e = pthread_mutex_lock(&m.m);
if (e)
printf("%d : %s\n", e, strerror(e));
return e;
}
If that works, we might be able to fix it using fixincludes (similar to PR
50982 comment 32)
Otherwise I suppose we must not define __GTHREAD_MUTEX_INIT on Tru64, causing
std::mutex to use the init function instead.
