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-rw-r--r--tests/ui/nll/ty-outlives/projection-body.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/nll/ty-outlives/projection-body.rs b/tests/ui/nll/ty-outlives/projection-body.rs
new file mode 100644
index 000000000..b03a539eb
--- /dev/null
+++ b/tests/ui/nll/ty-outlives/projection-body.rs
@@ -0,0 +1,27 @@
+// Test that when we infer the lifetime to a subset of the fn body, it
+// works out.
+//
+// check-pass
+
+trait MyTrait<'a> {
+ type Output;
+}
+
+fn foo1<T>()
+where
+ for<'x> T: MyTrait<'x>,
+{
+ // Here the region `'c` in `<T as MyTrait<'c>>::Output` will be
+ // inferred to a subset of the fn body.
+ let x = bar::<T::Output>();
+ drop(x);
+}
+
+fn bar<'a, T>() -> &'a ()
+where
+ T: 'a,
+{
+ &()
+}
+
+fn main() {}