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 <windows.h> 6 #include <malloc.h> 7 8 DWORD WINAPI thread_proc(void *context) { 9 int subscript = -1; 10 char stack_buffer[42]; 11 stack_buffer[subscript] = 42; 12 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 13 // CHECK: WRITE of size 1 at [[ADDR]] thread T1 14 // CHECK-NEXT: thread_proc {{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-3]] 15 // 16 // CHECK: Address [[ADDR]] is located in stack of thread T1 at offset [[OFFSET:.*]] in frame 17 // CHECK-NEXT: thread_proc {{.*}}dll_thread_stack_array_left_oob.cc 18 // 19 // CHECK: 'stack_buffer' <== Memory access at offset [[OFFSET]] underflows this variable 20 21 return 0; 22 } 23 24 extern "C" __declspec(dllexport) 25 int test_function() { 26 HANDLE thr = CreateThread(NULL, 0, thread_proc, NULL, 0, NULL); 27 // CHECK-LABEL: Thread T1 created by T0 here: 28 // CHECK: test_function {{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-2]] 29 // CHECK-NEXT: main {{.*}}dll_host.cc 30 // CHECK-LABEL: SUMMARY 31 if (thr == 0) 32 return 1; 33 if (WAIT_OBJECT_0 != WaitForSingleObject(thr, INFINITE)) 34 return 2; 35 return 0; 36 } 37
