Move an underscore-lifetime error test to an IHLE success test

src/test/ui/impl-header-lifetime-elision/inherent-impl.rs

@@ -0,0 +1,19 @@
+// 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.
+
+// compile-pass
+
+struct Foo<'a>(&'a u8);
+
+impl Foo<'_> {
+    fn x() {}
+}
+
+fn main() {}

src/test/ui/underscore-lifetime/underscore-lifetime-binders.rs

@@ -11,10 +11,6 @@
 struct Foo<'a>(&'a u8);
 struct Baz<'a>(&'_ &'a u8); //~ ERROR missing lifetime specifier
 
-impl Foo<'_> { //~ ERROR missing lifetime specifier
-    fn x() {}
-}
-
 fn foo<'_> //~ ERROR cannot be used here
 (_: Foo<'_>) {}
 

src/test/ui/underscore-lifetime/underscore-lifetime-binders.stderr

@@ -1,11 +1,11 @@
 error[E0637]: `'_` cannot be used here
-  --> $DIR/underscore-lifetime-binders.rs:18:8
+  --> $DIR/underscore-lifetime-binders.rs:14:8
    |
 LL | fn foo<'_> //~ ERROR cannot be used here
    |        ^^ `'_` is a reserved lifetime name
 
 error[E0637]: `'_` cannot be used here
-  --> $DIR/underscore-lifetime-binders.rs:24:21
+  --> $DIR/underscore-lifetime-binders.rs:20:21
    |
 LL | fn meh() -> Box<for<'_> Meh<'_>> //~ ERROR cannot be used here
    |                     ^^ `'_` is a reserved lifetime name
@@ -17,13 +17,7 @@ LL | struct Baz<'a>(&'_ &'a u8); //~ ERROR missing lifetime specifier
    |                 ^^ expected lifetime parameter
 
 error[E0106]: missing lifetime specifier
-  --> $DIR/underscore-lifetime-binders.rs:14:10
-   |
-LL | impl Foo<'_> { //~ ERROR missing lifetime specifier
-   |          ^^ expected lifetime parameter
-
-error[E0106]: missing lifetime specifier
-  --> $DIR/underscore-lifetime-binders.rs:24:29
+  --> $DIR/underscore-lifetime-binders.rs:20:29
    |
 LL | fn meh() -> Box<for<'_> Meh<'_>> //~ ERROR cannot be used here
    |                             ^^ expected lifetime parameter
@@ -32,14 +26,14 @@ LL | fn meh() -> Box<for<'_> Meh<'_>> //~ ERROR cannot be used here
    = help: consider giving it a 'static lifetime
 
 error[E0106]: missing lifetime specifier
-  --> $DIR/underscore-lifetime-binders.rs:30:35
+  --> $DIR/underscore-lifetime-binders.rs:26:35
    |
 LL | fn foo2(_: &'_ u8, y: &'_ u8) -> &'_ u8 { y } //~ ERROR missing lifetime specifier
    |                                   ^^ expected lifetime parameter
    |
    = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `_` or `y`
 
-error: aborting due to 6 previous errors
+error: aborting due to 5 previous errors
 
 Some errors occurred: E0106, E0637.
 For more information about an error, try `rustc --explain E0106`.