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-rw-r--r--src/test/ui/issues/issue-29861.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-29861.rs b/src/test/ui/issues/issue-29861.rs
new file mode 100644
index 000000000..58f8eb536
--- /dev/null
+++ b/src/test/ui/issues/issue-29861.rs
@@ -0,0 +1,20 @@
+pub trait MakeRef<'a> {
+ type Ref;
+}
+impl<'a, T: 'a> MakeRef<'a> for T {
+ type Ref = &'a T;
+}
+
+pub trait MakeRef2 {
+ type Ref2;
+}
+impl<'a, T: 'a> MakeRef2 for T {
+//~^ ERROR the lifetime parameter `'a` is not constrained
+ type Ref2 = <T as MakeRef<'a>>::Ref;
+}
+
+fn foo() -> <String as MakeRef2>::Ref2 { &String::from("foo") }
+
+fn main() {
+ println!("{}", foo());
+}