Viewing file:  tls-test.c (1.04 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-require-effective-target tls } */
/* { dg-require-effective-target pthread } */
/* { dg-options "-pthread" } */
#include <pthread.h>
extern int printf (char *,...);
__thread int a = 5;
int *volatile a_in_other_thread = (int *) 12345;
static void *
thread_func (void *arg)
{
a_in_other_thread = &a;
a+=5;
*((int *) arg) = a;
return (void *)0;
}
int
main ()
{
pthread_t thread;
void *thread_retval;
int *volatile a_in_main_thread;
int *volatile again ;
int thr_a;
a_in_main_thread = &a;
if (pthread_create (&thread, (pthread_attr_t *)0, thread_func, &thr_a))
return 0;
if (pthread_join (thread, &thread_retval))
return 0;
again = &a;
if (again != a_in_main_thread)
{
printf ("FAIL: main thread addy changed from 0x%0x to 0x%0x\n",
a_in_other_thread, again);
return 1;
}
if (a != 5 || thr_a != 10 || (a_in_other_thread == a_in_main_thread))
{
printf ("FAIL: a= %d, thr_a = %d Addr = 0x%0x\n",
a, thr_a, a_in_other_thread);
return 1;
}
return 0;
}
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