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src/test/run-pass/default-ty-param-fallback
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+ // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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+ // file at the top-level directory of this distribution and at
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+ // http://rust-lang.org/COPYRIGHT.
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+ //
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+ // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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+ // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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+ // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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+ // option. This file may not be copied, modified, or distributed
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+ // except according to those terms.
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+
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+ #![ feature( default_type_parameter_fallback) ]
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+
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+ trait Bar {
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+ // Current we consider only the default in the trait,
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+ // never the one in the impl.
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+ // Is this good? Is it bad? Is it just the way it works?
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+ // If this is ok then we should forbid writing the default in the impl.
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+ fn method < A : Default =String > ( & self ) -> A ;
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+ }
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+
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+ struct Foo ;
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+
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+ impl Bar for Foo {
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+ fn method < A : Default > ( & self ) -> A {
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+ A :: default ( )
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+ }
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+ }
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+
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+ fn main ( ) {
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+ Foo . method ( ) ;
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+ }
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