1 files changed, 32 insertions, 0 deletions
diff --git a/test/asan/TestCases/Windows/dll_intercept_memset.cc b/test/asan/TestCases/Windows/dll_intercept_memset.cc
new file mode 100644
index 000000000000..d4be376f2458
--- /dev/null
+++ b/test/asan/TestCases/Windows/dll_intercept_memset.cc
@@ -0,0 +1,32 @@
+// 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
+
+// Test that it works correctly even with ICF enabled.
+// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll -link /OPT:REF /OPT:ICF
+// RUN: not %run %t %t.dll 2>&1 | FileCheck %s
+
+#include <stdio.h>
+#include <string.h>
+
+extern "C" __declspec(dllexport)
+int test_function() {
+  char buff[5] = "aaaa";
+
+  memset(buff, 'b', 5);
+  if (buff[2] != 'b')
+    return 2;
+  printf("Initial test OK\n");
+  fflush(0);
+// CHECK: Initial test OK
+
+  memset(buff, 'c', 6);
+// CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
+// CHECK: WRITE of size 6 at [[ADDR]] thread T0
+// CHECK-NEXT:  __asan_memset
+// CHECK-NEXT:  test_function {{.*}}dll_intercept_memset.cc:[[@LINE-4]]
+// CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
+// CHECK-NEXT:  test_function {{.*}}dll_intercept_memset.cc
+// CHECK: 'buff' <== Memory access at offset {{.*}} overflows this variable
+  return 0;
+}