[rustc.git] / src / compiler-rt / test / asan / TestCases / free_hook_realloc.cc

// Check that free hook doesn't conflict with Realloc.
// RUN: %clangxx_asan -O2 %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s
#include <stdlib.h>
#include <unistd.h>

static void *glob_ptr;

extern "C" {
void __asan_free_hook(void *ptr) {
  if (ptr == glob_ptr) {
    *(int*)ptr = 0;
    write(1, "FreeHook\n", sizeof("FreeHook\n"));
  }
}
}

int main() {
  int *x = (int*)malloc(100);
  x[0] = 42;
  glob_ptr = x;
  int *y = (int*)realloc(x, 200);
  // Verify that free hook was called and didn't spoil the memory.
  if (y[0] != 42) {
    _exit(1);
  }
  write(1, "Passed\n", sizeof("Passed\n"));
  free(y);
  // CHECK: FreeHook
  // CHECK: Passed
  return 0;
}
Commit	Line	Data
1a4d82fc JJ	1	// Check that free hook doesn't conflict with Realloc.
	2	// RUN: %clangxx_asan -O2 %s -o %t
	3	// RUN: %run %t 2>&1 \| FileCheck %s
	4	#include <stdlib.h>
	5	#include <unistd.h>
	6
	7	static void *glob_ptr;
	8
	9	extern "C" {
	10	void __asan_free_hook(void *ptr) {
	11	if (ptr == glob_ptr) {
	12	(int)ptr = 0;
	13	write(1, "FreeHook\n", sizeof("FreeHook\n"));
	14	}
	15	}
	16	}
	17
	18	int main() {
	19	int x = (int)malloc(100);
	20	x[0] = 42;
	21	glob_ptr = x;
	22	int y = (int)realloc(x, 200);
	23	// Verify that free hook was called and didn't spoil the memory.
	24	if (y[0] != 42) {
	25	_exit(1);
	26	}
	27	write(1, "Passed\n", sizeof("Passed\n"));
	28	free(y);
	29	// CHECK: FreeHook
	30	// CHECK: Passed
	31	return 0;
	32	}