15d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t 25d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll 35d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: not %run %t %t.dll 2>&1 | FileCheck %s 45d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines 55d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines#include <stdio.h> 65d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines#include <string.h> 75d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines 85d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hinesvoid call_memcpy(void* (*f)(void *, const void *, size_t), 95d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines void *a, const void *b, size_t c) { 105d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines f(a, b, c); 115d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines} 125d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines 135d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hinesextern "C" __declspec(dllexport) 145d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hinesint test_function() { 155d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines char buff1[6] = "Hello", buff2[5]; 165d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines 175d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines call_memcpy(&memcpy, buff2, buff1, 5); 185d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines if (buff1[2] != buff2[2]) 195d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines return 2; 205d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines printf("Initial test OK\n"); 215d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines fflush(0); 225d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK: Initial test OK 235d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines 245d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines call_memcpy(&memcpy, buff2, buff1, 6); 255d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 265d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK: WRITE of size 6 at [[ADDR]] thread T0 275d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK-NEXT: __asan_memcpy 285d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK-NEXT: call_memcpy 295d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy_indirect.cc:[[@LINE-5]] 305d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame 315d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy_indirect.cc 325d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// CHECK: 'buff2' <== Memory access at offset {{.*}} overflows this variable 335d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines return 0; 345d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines} 35