1 // RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t
2 // RUN: %clang_cl_asan -Wno-fortify-source %LD %Od %s %Fe%t.dll
3 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
4
5 // Test that it works correctly even with ICF enabled.
6 // RUN: %clang_cl_asan -Wno-fortify-source %LD %Od %s %Fe%t.dll \
7 // RUN: %if target={{.*-windows-gnu}} %{ -Wl,--gc-sections,--icf=all %} \
8 // RUN: %else %{ -link /OPT:REF /OPT:ICF %}
9 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
10
11 #include <stdio.h>
12 #include <string.h>
13
14 extern "C" __declspec(dllexport)
test_function()15 int test_function() {
16 char buff1[6] = "Hello", buff2[5];
17
18 memcpy(buff2, buff1, 5);
19 if (buff1[2] != buff2[2])
20 return 2;
21 printf("Initial test OK\n");
22 fflush(0);
23 // CHECK: Initial test OK
24
25 memcpy(buff2, buff1, 6);
26 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
27 // CHECK: WRITE of size 6 at [[ADDR]] thread T0
28 // CHECK-NEXT: __asan_{{.*}}memcpy
29 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy.cpp:[[@LINE-4]]
30 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
31 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy.cpp
32 // CHECK: 'buff2'{{.*}} <== Memory access at offset {{.*}} overflows this variable
33 return 0;
34 }
35