src/test/compile-fail/inherent-overlap.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // Test that you cannot define items with the same name in overlapping inherent
  12 // impl blocks.
  13
  14 #![feature(rustc_attrs)]
  15 #![allow(dead_code)]
  16
  17 struct Foo;
  18
  19 impl Foo {
  20     fn id() {} //~ WARN duplicate definitions
  21     //~^ WARN previously accepted
  22 }
  23
  24 impl Foo {
  25     fn id() {}
  26 }
  27
  28 struct Bar<T>(T);
  29
  30 impl<T> Bar<T> {
  31     fn bar(&self) {} //~ WARN duplicate definitions
  32     //~^ WARN previously accepted
  33 }
  34
  35 impl Bar<u32> {
  36     fn bar(&self) {}
  37 }
  38
  39 struct Baz<T>(T);
  40
  41 impl<T: Copy> Baz<T> {
  42     fn baz(&self) {} //~ WARN duplicate definitions
  43     //~^ WARN previously accepted
  44 }
  45
  46 impl<T> Baz<Vec<T>> {
  47     fn baz(&self) {}
  48 }
  49
  50 #[rustc_error]
  51 fn main() {} //~ ERROR compilation successful