1 // Check that free hook doesn't conflict with Realloc. 2 // RUN: %clangxx_asan -O2 %s -o %t 3 // 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 // CHECK: FreeHook 29 // CHECK: Passed 30 return 0; 31 } 32
