Benutzung und Auswertung von void **retval in pthread_join()

[botty]

Probiers mal damit.

#include <stdio.h>
#include <pthread.h>
#include <assert.h>

int bla;

void *func(void *arg) {
	printf("Thread started\nBye\n");
	
	bla = 0;
	
	while(1) 
		pthread_testcancel();
	
	return &bla;
}

int main(void) {
	pthread_t id;
	
	void *ret;
	
	assert(sizeof(void *) == sizeof(int));
	
	pthread_create(&id, 0, func, 0);
	
	printf("PTHREAD_CANCELED=%d\n", (int)PTHREAD_CANCELED);
	
	printf("Cancel\n");
	pthread_cancel(id);
	
	printf("Join\n");
	pthread_join(id, &ret);
	
	printf("%p\t%d\n", ret, ret == PTHREAD_CANCELED);

	printf("%d\n", (int)ret);
	
	return 0;
}

Gruß botty

Edit: assert() ergänzt.