1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/typeck/issue-80779.rs b/src/test/ui/typeck/issue-80779.rs
new file mode 100644
index 000000000..1624f6b77
--- /dev/null
+++ b/src/test/ui/typeck/issue-80779.rs
@@ -0,0 +1,13 @@
+// Regression test for #80779.
+
+pub struct T<'a>(&'a str);
+
+pub fn f<'a>(val: T<'a>) -> _ {
+    //~^ ERROR: the placeholder `_` is not allowed within types on item signatures for return types
+    g(val)
+}
+
+pub fn g(_: T<'static>) -> _ {}
+//~^ ERROR: the placeholder `_` is not allowed within types on item signatures for return types
+
+fn main() {}