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#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
/* Simple test program, has a race. Parent and child both modify x
with no locking. */
int x = 0;
void* child_fn ( void* arg )
{
/* Unprotected relative to parent */
x++;
return NULL;
}
int main ( void )
{
pthread_t child;
if (pthread_create(&child, NULL, child_fn, NULL)) {
perror("pthread_create");
exit(1);
}
/* Unprotected relative to child */
x++;
if (pthread_join(child, NULL)) {
perror("pthread join");
exit(1);
}
return 0;
}
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