tests H.R. T: 'a bounds proving themselves

Author: nikomatsakis

src/test/ui/regions/forall-wf-ref-reflexive.rs

@@ -0,0 +1,18 @@
+// Test that we consider `for<'a> &'a T: 'a` to be sufficient to prove
+// that `for<'a> &'a T: 'a`.
+//
+// FIXME. Except we don't!
+
+#![allow(warnings)]
+
+fn self_wf2<T>()
+where
+    for<'a> &'a T: 'a,
+{
+    self_wf2::<T>();
+    //~^ ERROR `T` does not live long enough
+    //
+    // FIXME. This ought to be accepted, presumably.
+}
+
+fn main() {}

src/test/ui/regions/forall-wf-ref-reflexive.stderr

@@ -0,0 +1,8 @@
+error: `T` does not live long enough
+  --> $DIR/forall-wf-ref-reflexive.rs:12:5
+   |
+LL |     self_wf2::<T>();
+   |     ^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+

src/test/ui/regions/forall-wf-reflexive.rs

@@ -0,0 +1,15 @@
+// Test that we consider `for<'a> T: 'a` to be sufficient to prove
+// that `for<'a> T: 'a`.
+//
+// check-pass
+
+#![allow(warnings)]
+
+fn self_wf1<T>()
+where
+    for<'a> T: 'a,
+{
+    self_wf1::<T>();
+}
+
+fn main() {}