[rustc.git] / src / compiler-rt / test / tsan / Linux / user_malloc.cc

// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include <stdio.h>

// Defined by tsan.
extern "C" void *__interceptor_malloc(unsigned long size);
extern "C" void __interceptor_free(void *p);

extern "C" void *malloc(unsigned long size) {
  static int first = 0;
  if (__sync_lock_test_and_set(&first, 1) == 0)
    fprintf(stderr, "user malloc\n");
  return __interceptor_malloc(size);
}

extern "C" void free(void *p) {
  __interceptor_free(p);
}

int main() {
  volatile char *p = (char*)malloc(10);
  p[0] = 0;
  free((void*)p);
}

// CHECK: user malloc
// CHECK-NOT: ThreadSanitizer
Commit	Line	Data
1a4d82fc JJ	1	// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 \| FileCheck %s
	2	#include <stdio.h>
	3
92a42be0	4	// Defined by tsan.
1a4d82fc JJ	5	extern "C" void *__interceptor_malloc(unsigned long size);
	6	extern "C" void __interceptor_free(void *p);
	7
	8	extern "C" void *malloc(unsigned long size) {
	9	static int first = 0;
	10	if (__sync_lock_test_and_set(&first, 1) == 0)
5bcae85e	11	fprintf(stderr, "user malloc\n");
1a4d82fc JJ	12	return __interceptor_malloc(size);
	13	}
	14
	15	extern "C" void free(void *p) {
	16	__interceptor_free(p);
	17	}
	18
	19	int main() {
	20	volatile char p = (char)malloc(10);
	21	p[0] = 0;
	22	free((void*)p);
	23	}
	24
	25	// CHECK: user malloc
	26	// CHECK-NOT: ThreadSanitizer
	27