Add tests

Author: petrochenkov

src/test/compile-fail-fulldeps/issue-18986.rs

@@ -15,6 +15,7 @@ pub use use_from_trait_xc::Trait;
 
 fn main() {
     match () {
-        Trait { x: 42 } => () //~ ERROR `Trait` does not name a struct
+        Trait { x: 42 } => () //~ ERROR expected variant, struct or type alias, found trait `Trait`
+        //~^ ERROR `Trait` does not name a struct or a struct variant
     }
 }

src/test/compile-fail/issue-32086.rs

@@ -0,0 +1,17 @@
+// Copyright 2016 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.
+
+struct S(u8);
+const C: S = S(10);
+
+fn main() {
+    let C(a) = S(11); //~ ERROR expected variant or struct, found constant `C`
+    let C(..) = S(11); //~ ERROR expected variant or struct, found constant `C`
+}

src/test/compile-fail/issue-34047.rs

@@ -0,0 +1,19 @@
+// Copyright 2016 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.
+
+const C: u8 = 0; //~ NOTE a constant `C` is defined here
+
+fn main() {
+    match 1u8 {
+        mut C => {} //~ ERROR match bindings cannot shadow constants
+        //~^ NOTE cannot be named the same as a constant
+        _ => {}
+    }
+}

src/test/run-pass/issue-34074.rs

@@ -0,0 +1,18 @@
+// Copyright 2016 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.
+
+// Make sure several unnamed function arguments don't conflict with each other
+
+trait Tr {
+    fn f(u8, u8) {}
+}
+
+fn main() {
+}