1*673dc3d4SNico Weber // Check that free hook doesn't conflict with Realloc. 2*673dc3d4SNico Weber // RUN: %clangxx_asan -O2 %s -o %t 3*673dc3d4SNico Weber // RUN: %run %t 2>&1 | FileCheck %s 4*673dc3d4SNico Weber 5*673dc3d4SNico Weber // FIXME: merge this with the common free_hook_realloc test when we can run 6*673dc3d4SNico Weber // common tests on Windows. 7*673dc3d4SNico Weber 8*673dc3d4SNico Weber // FIXME: Doesn't work with DLLs 9*673dc3d4SNico Weber // XFAIL: win32-dynamic-asan 10*673dc3d4SNico Weber 11*673dc3d4SNico Weber #include <stdlib.h> 12*673dc3d4SNico Weber #include <io.h> 13*673dc3d4SNico Weber #include <sanitizer/allocator_interface.h> 14*673dc3d4SNico Weber 15*673dc3d4SNico Weber static void *glob_ptr; 16*673dc3d4SNico Weber 17*673dc3d4SNico Weber extern "C" { __sanitizer_free_hook(const volatile void * ptr)18*673dc3d4SNico Webervoid __sanitizer_free_hook(const volatile void *ptr) { 19*673dc3d4SNico Weber if (ptr == glob_ptr) { 20*673dc3d4SNico Weber *(int*)ptr = 0; 21*673dc3d4SNico Weber write(1, "FreeHook\n", sizeof("FreeHook\n")); 22*673dc3d4SNico Weber } 23*673dc3d4SNico Weber } 24*673dc3d4SNico Weber } 25*673dc3d4SNico Weber main()26*673dc3d4SNico Weberint main() { 27*673dc3d4SNico Weber int *x = (int*)malloc(100); 28*673dc3d4SNico Weber x[0] = 42; 29*673dc3d4SNico Weber glob_ptr = x; 30*673dc3d4SNico Weber int *y = (int*)realloc(x, 200); 31*673dc3d4SNico Weber // Verify that free hook was called and didn't spoil the memory. 32*673dc3d4SNico Weber if (y[0] != 42) { 33*673dc3d4SNico Weber _exit(1); 34*673dc3d4SNico Weber } 35*673dc3d4SNico Weber write(1, "Passed\n", sizeof("Passed\n")); 36*673dc3d4SNico Weber free(y); 37*673dc3d4SNico Weber // CHECK: FreeHook 38*673dc3d4SNico Weber // CHECK: Passed 39*673dc3d4SNico Weber return 0; 40*673dc3d4SNico Weber } 41