1 files changed, 5 insertions, 0 deletions
diff --git a/tests/ui/unsized-locals/issue-50940.rs b/tests/ui/unsized-locals/issue-50940.rs
new file mode 100644
index 00000000000..7ba809b7e83
--- /dev/null
+++ b/tests/ui/unsized-locals/issue-50940.rs
@@ -0,0 +1,5 @@
+fn main() {
+    struct A<X: ?Sized>(X);
+    A as fn(str) -> A<str>;
+    //~^ERROR the size for values of type `str` cannot be known at compilation time
+}