3168fe06ff
are currently inferred. New rules are coming that will require them to be explicit. All add some explicit self declarations.
40 lines
1.3 KiB
Rust
40 lines
1.3 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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enum an_enum = &'self int;
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trait a_trait {
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fn foo() -> &'self int;
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}
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struct a_class { x:&'self int }
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fn a_fn1(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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}
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fn a_fn2(e: a_trait<'a>) -> a_trait<'b> {
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return e; //~ ERROR mismatched types: expected `@a_trait/&b` but found `@a_trait/&a`
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}
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fn a_fn3(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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}
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fn a_fn4(e: int<'a>) -> int<'b> {
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//~^ ERROR region parameters are not allowed on this type
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//~^^ ERROR region parameters are not allowed on this type
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return e;
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}
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fn main() { }
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