38 lines · cpp
1// Check that free hook doesn't conflict with Realloc.2// RUN: %clangxx_asan -O2 %s -o %t3// RUN: %run %t 2>&1 | FileCheck %s4 5// FIXME: merge this with the common free_hook_realloc test when we can run6// common tests on Windows.7 8#include <stdlib.h>9#include <io.h>10#include <sanitizer/allocator_interface.h>11 12static void *glob_ptr;13 14extern "C" {15void __sanitizer_free_hook(const volatile void *ptr) {16 if (ptr == glob_ptr) {17 *(int*)ptr = 0;18 write(1, "FreeHook\n", sizeof("FreeHook\n"));19 }20}21}22 23int main() {24 int *x = (int*)malloc(100);25 x[0] = 42;26 glob_ptr = x;27 int *y = (int*)realloc(x, 200);28 // Verify that free hook was called and didn't spoil the memory.29 if (y[0] != 42) {30 _exit(1);31 }32 write(1, "Passed\n", sizeof("Passed\n"));33 free(y);34 // CHECK: FreeHook35 // CHECK: Passed36 return 0;37}38