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// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t
// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll
// RUN: not %run %t %t.dll 2>&1 | FileCheck %s
#include <windows.h>
#include <malloc.h>
DWORD WINAPI thread_proc(void *context) {
int subscript = -1;
char stack_buffer[42];
stack_buffer[subscript] = 42;
// CHECK: AddressSanitizer: stack-buffer-underflow on address [[ADDR:0x[0-9a-f]+]]
// CHECK: WRITE of size 1 at [[ADDR]] thread T1
// CHECK-NEXT: thread_proc{{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-3]]
//
// CHECK: Address [[ADDR]] is located in stack of thread T1 at offset [[OFFSET:.*]] in frame
// CHECK-NEXT: thread_proc{{.*}}dll_thread_stack_array_left_oob.cc
//
// CHECK: 'stack_buffer' <== Memory access at offset [[OFFSET]] underflows this variable
return 0;
}
extern "C" __declspec(dllexport)
int test_function() {
HANDLE thr = CreateThread(NULL, 0, thread_proc, NULL, 0, NULL);
// CHECK-LABEL: Thread T1 created by T0 here:
// CHECK: test_function{{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-2]]
// CHECK-NEXT: main{{.*}}dll_host.cc
// CHECK-LABEL: SUMMARY
if (thr == 0)
return 1;
if (WAIT_OBJECT_0 != WaitForSingleObject(thr, INFINITE))
return 2;
return 0;
}
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