1 files changed, 5 insertions, 1 deletions
diff --git a/tests/ui/proc-macro/signature.rs b/tests/ui/proc-macro/signature.rs
index 230223825..11187aa31 100644
--- a/tests/ui/proc-macro/signature.rs
+++ b/tests/ui/proc-macro/signature.rs
@@ -8,6 +8,10 @@ extern crate proc_macro;
 
 #[proc_macro_derive(A)]
 pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
-    //~^ ERROR: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn
+    //~^ ERROR: mismatched derive proc macro signature
+    //~| mismatched derive proc macro signature
+    //~| mismatched derive proc macro signature
+    //~| proc macro functions may not be `extern
+    //~| proc macro functions may not be `unsafe
     loop {}
 }