Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs b/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs
new file mode 100644
index 000000000..950ad1f50
--- /dev/null
+++ b/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs
@@ -0,0 +1,30 @@
+// build-pass (FIXME(62277): could be check-pass?)
+
+#![allow(unused)]
+#![deny(explicit_outlives_requirements)]
+
+// A case where we can't infer the outlives requirement. Example copied from
+// RFC 2093.
+// (https://rust-lang.github.io/rfcs/2093-infer-outlives.html
+// #where-explicit-annotations-would-still-be-required)
+
+
+trait MakeRef<'a> {
+    type Type;
+}
+
+impl<'a, T> MakeRef<'a> for Vec<T>
+    where T: 'a  // still required
+{
+    type Type = &'a T;
+}
+
+
+struct Foo<'a, T>
+    where T: 'a  // still required, not inferred from `field`
+{
+    field: <Vec<T> as MakeRef<'a>>::Type
+}
+
+
+fn main() {}