1 files changed, 16 insertions, 0 deletions
diff --git a/test/asan/TestCases/Windows/coverage-dll-stdio.cc b/test/asan/TestCases/Windows/coverage-dll-stdio.cc
new file mode 100644
index 0000000000000..5e12e38554499
--- /dev/null
+++ b/test/asan/TestCases/Windows/coverage-dll-stdio.cc
@@ -0,0 +1,16 @@
+// Test that coverage and MSVC CRT stdio work from a DLL. This ensures that the
+// __local_stdio_printf_options function isn't instrumented for coverage.
+
+// RUN: rm -rf %t && mkdir %t && cd %t
+// RUN: %clang_cl_asan -fsanitize-coverage=func -O0 %p/dll_host.cc -Fet.exe
+// RUN: %clang_cl_asan -fsanitize-coverage=func -LD -O0 %s -Fet.dll
+// RUN: %run ./t.exe t.dll 2>&1 | FileCheck %s
+
+#include <stdio.h>
+
+extern "C" __declspec(dllexport)
+int test_function() {
+  printf("hello world\n");
+  // CHECK: hello world
+  return 0;
+}