41 lines · c
1// RUN: %clang_safestack %s -pthread -o %t2// RUN: %run %t3 4// Test that pthreads receive their own unsafe stack.5 6#include <stdlib.h>7#include <string.h>8#include <pthread.h>9#include "utils.h"10 11static int ptr_test = 42;12 13void *t1_start(void *ptr)14{15 if (ptr != &ptr_test)16 abort();17 18 // safe stack19 int val = ptr_test * 5;20 21 // unsafe stack22 char buffer[8096]; // two pages23 memset(buffer, val, sizeof (buffer));24 break_optimization(buffer);25 26 return ptr;27}28 29int main(int argc, char **argv)30{31 pthread_t t1;32 void *ptr = NULL;33 if (pthread_create(&t1, NULL, t1_start, &ptr_test))34 abort();35 if (pthread_join(t1, &ptr))36 abort();37 if (ptr != &ptr_test)38 abort();39 return 0;40}41