Implement multidispatch and conditional dispatch. Because we do not

attempt to preserve crate concatenation, this is a backwards compatible
change.

Conflicts:
	src/librustc/middle/traits/select.rs

1 files changed, 30 insertions, 0 deletions

diff --git a/src/test/run-pass/coherence-multidispatch-tuple.rs b/src/test/run-pass/coherence-multidispatch-tuple.rs
new file mode 100644
index 00000000000..04a69bbf3a2
--- /dev/null
+++ b/src/test/run-pass/coherence-multidispatch-tuple.rs
@@ -0,0 +1,30 @@
+// Copyright 2014 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.
+
+use std::fmt::Show;
+use std::default::Default;
+
+// Test that an impl for homogeneous pairs does not conflict with a
+// heterogeneous pair.
+
+trait MyTrait {
+    fn get(&self) -> uint;
+}
+
+impl<T> MyTrait for (T,T) {
+    fn get(&self) -> uint { 0 }
+}
+
+impl MyTrait for (uint,int) {
+    fn get(&self) -> uint { 0 }
+}
+
+fn main() {
+}