Propagate expected type hints through struct literals.

src/test/run-pass/issue-31260.rs

@@ -0,0 +1,20 @@
+// Copyright 2017 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.
+
+pub struct Struct<K: 'static> {
+    pub field: K,
+}
+
+// Partial fix for #31260, doesn't work without {...}.
+static STRUCT: Struct<&'static [u8]> = Struct {
+    field: {&[1]}
+};
+
+fn main() {}