8693943676
This removes the stacking of type parameters that occurs when invoking trait methods, and fixes all places in the standard library that were relying on it. It is somewhat awkward in places; I think we'll probably want something like the `Foo::<for T>::new()` syntax.
29 lines
1.1 KiB
Rust
29 lines
1.1 KiB
Rust
// Copyright 2012 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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// Check that explicit region bounds are allowed on the various
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// nominal types (but not on other types) and that they are type
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// checked.
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struct an_enum<'self>(&'self int);
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struct a_class<'self> { x:&'self int }
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fn a_fn1<'a,'b>(e: an_enum<'a>) -> an_enum<'b> {
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return e; //~ ERROR mismatched types: expected `an_enum<'b>` but found `an_enum<'a>`
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//~^ ERROR cannot infer an appropriate lifetime
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}
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fn a_fn3<'a,'b>(e: a_class<'a>) -> a_class<'b> {
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return e; //~ ERROR mismatched types: expected `a_class<'b>` but found `a_class<'a>`
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//~^ ERROR cannot infer an appropriate lifetime
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}
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fn main() { }
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