1 // RUN: %clangxx -O2 %s -o %t && %run %t 2>&1 | FileCheck %s 2 3 // Malloc/free hooks are not supported on Windows. 4 // XFAIL: win32 5 6 #include <stdlib.h> 7 #include <unistd.h> 8 #include <sanitizer/allocator_interface.h> 9 10 extern "C" { 11 const volatile void *global_ptr; 12 13 // Note: avoid calling functions that allocate memory in malloc/free 14 // to avoid infinite recursion. 15 void __sanitizer_malloc_hook(const volatile void *ptr, size_t sz) { 16 if (__sanitizer_get_ownership(ptr)) { 17 write(1, "MallocHook\n", sizeof("MallocHook\n")); 18 global_ptr = ptr; 19 } 20 } 21 void __sanitizer_free_hook(const volatile void *ptr) { 22 if (__sanitizer_get_ownership(ptr) && ptr == global_ptr) 23 write(1, "FreeHook\n", sizeof("FreeHook\n")); 24 } 25 } // extern "C" 26 27 int main() { 28 volatile int *x = new int; 29 // CHECK: MallocHook 30 // Check that malloc hook was called with correct argument. 31 if (global_ptr != (void*)x) { 32 _exit(1); 33 } 34 *x = 0; 35 delete x; 36 // CHECK: FreeHook 37 return 0; 38 } 39
