37 lines
1.5 KiB
Rust
37 lines
1.5 KiB
Rust
// Copyright 2017 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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// All lifetime parameters in struct constructors are currently considered early bound,
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// i.e. `S::<ARGS>` is interpreted kinda like an associated item `S::<ARGS>::ctor`.
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// This behavior is a bit weird, because if equivalent constructor were written manually
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// it would get late bound lifetime parameters.
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// Variant constructors behave in the same way, lifetime parameters are considered
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// belonging to the enum and being early bound.
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// https://github.com/rust-lang/rust/issues/30904
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struct S<'a, 'b>(&'a u8, &'b u8);
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enum E<'a, 'b> {
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V(&'a u8),
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U(&'b u8),
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}
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fn main() {
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S(&0, &0); // OK
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S::<'static>(&0, &0);
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//~^ ERROR wrong number of lifetime arguments: expected 2, found 1
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S::<'static, 'static, 'static>(&0, &0);
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//~^ ERROR wrong number of lifetime arguments: expected 2, found 3
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E::V(&0); // OK
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E::V::<'static>(&0);
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//~^ ERROR wrong number of lifetime arguments: expected 2, found 1
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E::V::<'static, 'static, 'static>(&0);
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//~^ ERROR wrong number of lifetime arguments: expected 2, found 3
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}
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