1 // RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t
2 // RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll
3 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
4
5 #include <stdio.h>
6 #include <string.h>
7
call_memcpy(void * (* f)(void *,const void *,size_t),void * a,const void * b,size_t c)8 void call_memcpy(void* (*f)(void *, const void *, size_t),
9 void *a, const void *b, size_t c) {
10 f(a, b, c);
11 }
12
13 extern "C" __declspec(dllexport)
test_function()14 int test_function() {
15 char buff1[6] = "Hello", buff2[5];
16
17 call_memcpy(&memcpy, buff2, buff1, 5);
18 if (buff1[2] != buff2[2])
19 return 2;
20 printf("Initial test OK\n");
21 fflush(0);
22 // CHECK: Initial test OK
23
24 call_memcpy(&memcpy, buff2, buff1, 6);
25 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
26 // CHECK: WRITE of size 6 at [[ADDR]] thread T0
27 // CHECK-NEXT: __asan_{{.*}}memcpy
28 // CHECK-NEXT: call_memcpy
29 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy_indirect.cc:[[@LINE-5]]
30 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
31 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy_indirect.cc
32 // CHECK: 'buff2' <== Memory access at offset {{.*}} overflows this variable
33 return 0;
34 }
35