1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/rfc-2627-raw-dylib/multiple-declarations.rs b/src/test/ui/rfc-2627-raw-dylib/multiple-declarations.rs
new file mode 100644
index 000000000..13c9aa01e
--- /dev/null
+++ b/src/test/ui/rfc-2627-raw-dylib/multiple-declarations.rs
@@ -0,0 +1,20 @@
+// only-x86
+// only-windows
+// compile-flags: --crate-type lib --emit link
+#![allow(clashing_extern_declarations)]
+#![feature(raw_dylib)]
+//~^ WARN the feature `raw_dylib` is incomplete
+#[link(name = "foo", kind = "raw-dylib")]
+extern "C" {
+    fn f(x: i32);
+}
+
+pub fn lib_main() {
+    #[link(name = "foo", kind = "raw-dylib")]
+    extern "stdcall" {
+        fn f(x: i32);
+        //~^ ERROR multiple declarations of external function `f` from library `foo.dll` have different calling conventions
+    }
+
+    unsafe { f(42); }
+}