1 files changed, 8 insertions, 0 deletions
diff --git a/test/Sema/MicrosoftCompatibility-x64.c b/test/Sema/MicrosoftCompatibility-x64.c
new file mode 100644
index 0000000000000..bf595af699393
--- /dev/null
+++ b/test/Sema/MicrosoftCompatibility-x64.c
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wmicrosoft -verify -fms-compatibility -triple x86_64-pc-win32
+int __stdcall f(void); /* expected-warning {{calling convention '__stdcall' ignored for this target}} */
+
+/* This should compile without warning because __stdcall is treated
+as __cdecl in MS compatibility mode for x64 compiles*/
+int __cdecl f(void) {
+  return 0;
+}