79 lines
2.5 KiB
Rust
79 lines
2.5 KiB
Rust
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// Copyright 2014 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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// Make sure rustc checks the type parameter bounds in implementations of traits,
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// see #2687
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trait A {}
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trait B: A {}
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trait C: A {}
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trait Foo {
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fn test_error1_fn<T: Eq>(&self);
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fn test_error2_fn<T: Eq + Ord>(&self);
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fn test_error3_fn<T: Eq + Ord>(&self);
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fn test3_fn<T: Eq + Ord>(&self);
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fn test4_fn<T: Eq + Ord>(&self);
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fn test_error5_fn<T: A>(&self);
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fn test6_fn<T: A + Eq>(&self);
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fn test_error7_fn<T: A>(&self);
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fn test_error8_fn<T: B>(&self);
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}
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impl Foo for int {
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// invalid bound for T, was defined as Eq in trait
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fn test_error1_fn<T: Ord>(&self) {}
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//~^ ERROR in method `test_error1_fn`, type parameter 0 requires bound `core::cmp::Ord`
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// invalid bound for T, was defined as Eq + Ord in trait
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fn test_error2_fn<T: Eq + B>(&self) {}
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//~^ ERROR in method `test_error2_fn`, type parameter 0 requires bound `B`
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// invalid bound for T, was defined as Eq + Ord in trait
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fn test_error3_fn<T: B + Eq>(&self) {}
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//~^ ERROR in method `test_error3_fn`, type parameter 0 requires bound `B`
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// multiple bounds, same order as in trait
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fn test3_fn<T: Ord + Eq>(&self) {}
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// multiple bounds, different order as in trait
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fn test4_fn<T: Eq + Ord>(&self) {}
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// parameters in impls must be equal or more general than in the defining trait
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fn test_error5_fn<T: B>(&self) {}
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//~^ ERROR in method `test_error5_fn`, type parameter 0 requires bound `B`
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// bound `std::cmp::Eq` not enforced by this implementation, but this is OK
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fn test6_fn<T: A>(&self) {}
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fn test_error7_fn<T: A + Eq>(&self) {}
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//~^ ERROR in method `test_error7_fn`, type parameter 0 requires bound `core::cmp::Eq`
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fn test_error8_fn<T: C>(&self) {}
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//~^ ERROR in method `test_error8_fn`, type parameter 0 requires bound `C`
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}
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trait Getter<T> { }
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trait Trait {
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fn method<G:Getter<int>>();
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}
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impl Trait for uint {
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fn method<G: Getter<uint>>() {}
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//~^ ERROR in method `method`, type parameter 0 requires bound `Getter<uint>`
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}
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fn main() {}
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