29 lines
870 B
Rust
29 lines
870 B
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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// Check that unsafe traits require unsafe impls and that inherent
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// impls cannot be unsafe.
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trait SafeTrait {
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fn foo(self) { }
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}
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unsafe trait UnsafeTrait {
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fn foo(self) { }
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}
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unsafe impl UnsafeTrait for u8 { } // OK
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impl UnsafeTrait for u16 { } //~ ERROR requires an `unsafe impl` declaration
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unsafe impl SafeTrait for u32 { } //~ ERROR the trait `SafeTrait` is not unsafe
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fn main() { }
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