1 files changed, 64 insertions, 0 deletions
diff --git a/src/test/ui/compile-fail-migration/wf-static-method.rs b/src/test/ui/compile-fail-migration/wf-static-method.rs
new file mode 100644
index 00000000000..e99957c7914
--- /dev/null
+++ b/src/test/ui/compile-fail-migration/wf-static-method.rs
@@ -0,0 +1,64 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// check that static methods don't get to assume their trait-ref
+// is well-formed.
+// FIXME(#27579): this is just a bug. However, our checking with
+// static inherent methods isn't quite working - need to
+// fix that before removing the check.
+
+trait Foo<'a, 'b, T>: Sized {
+    fn make_me() -> Self { loop {} }
+    fn static_evil(u: &'b u32) -> &'a u32;
+}
+
+struct Evil<'a, 'b: 'a>(Option<&'a &'b ()>);
+
+impl<'a, 'b> Foo<'a, 'b, Evil<'a, 'b>> for () {
+    fn make_me() -> Self { }
+    fn static_evil(u: &'b u32) -> &'a u32 {
+        u //~ ERROR E0312
+    }
+}
+
+struct IndirectEvil<'a, 'b: 'a>(Option<&'a &'b ()>);
+
+impl<'a, 'b> Foo<'a, 'b, ()> for IndirectEvil<'a, 'b> {
+    fn make_me() -> Self { IndirectEvil(None) }
+    fn static_evil(u: &'b u32) -> &'a u32 {
+        let me = Self::make_me(); //~ ERROR lifetime bound not satisfied
+        loop {} // (`me` could be used for the lifetime transmute).
+    }
+}
+
+impl<'a, 'b> Evil<'a, 'b> {
+    fn inherent_evil(u: &'b u32) -> &'a u32 {
+        u //~ ERROR E0312
+    }
+}
+
+// while static methods don't get to *assume* this, we still
+// *check* that they hold.
+
+fn evil<'a, 'b>(b: &'b u32) -> &'a u32 {
+    <()>::static_evil(b) //~ ERROR cannot infer an appropriate lifetime
+}
+
+fn indirect_evil<'a, 'b>(b: &'b u32) -> &'a u32 {
+    <IndirectEvil>::static_evil(b)
+    //~^ ERROR cannot infer an appropriate lifetime
+}
+
+fn inherent_evil<'a, 'b>(b: &'b u32) -> &'a u32 {
+    <Evil>::inherent_evil(b) // bug? shouldn't this be an error
+}
+
+
+fn main() {}