1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui/regions/regions-infer-bound-from-trait-self.rs b/tests/ui/regions/regions-infer-bound-from-trait-self.rs
new file mode 100644
index 000000000..d15bfffe9
--- /dev/null
+++ b/tests/ui/regions/regions-infer-bound-from-trait-self.rs
@@ -0,0 +1,51 @@
+// Test that we can derive lifetime bounds on `Self` from trait
+// inheritance.
+
+trait Static : 'static { }
+
+trait Is<'a> : 'a { }
+
+struct Inv<'a> {
+    x: Option<&'a mut &'a isize>
+}
+
+fn check_bound<'a,A:'a>(x: Inv<'a>, a: A) { }
+
+// In these case, `Self` inherits `'static`.
+
+trait InheritsFromStatic : Sized + 'static {
+    fn foo1<'a>(self, x: Inv<'a>) {
+        check_bound(x, self)
+    }
+}
+trait InheritsFromStaticIndirectly : Sized + Static {
+    fn foo1<'a>(self, x: Inv<'a>) {
+        check_bound(x, self)
+    }
+}
+
+
+// In these case, `Self` inherits `'a`.
+
+trait InheritsFromIs<'a> : Sized + 'a {
+    fn foo(self, x: Inv<'a>) {
+        check_bound(x, self)
+    }
+}
+
+trait InheritsFromIsIndirectly<'a> : Sized + Is<'a> {
+    fn foo(self, x: Inv<'a>) {
+        check_bound(x, self)
+    }
+}
+
+// In this case, `Self` inherits nothing.
+
+trait InheritsFromNothing<'a> : Sized {
+    fn foo(self, x: Inv<'a>) {
+        check_bound(x, self)
+            //~^ ERROR parameter type `Self` may not live long enough
+    }
+}
+
+fn main() { }