abd1cea145
Original issue: https://github.com/rust-lang/rust/issues/21195 Relevant PR: https://github.com/rust-lang/rust/pull/30778 Prior to this commit, if a compiletest testcase included the text "HELP:" or "NOTE:" (note the colons), then it would indicate to the compiletest suite that we should verify "help" and "note" expected messages. This commit updates this check to also check "HELP" and "NOTE" (not the absense of colons) so that we always verify "help" and "note" expected messages.
62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
// Copyright 2015 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 we reject structs that mix a `Drop` impl with `#[repr(C)]`.
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//
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// As a special case, also check that we do not warn on such structs
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// if they also are declared with `#[unsafe_no_drop_flag]`
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#![feature(unsafe_no_drop_flag)]
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#![deny(drop_with_repr_extern)]
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//~^ NOTE lint level defined here
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//~| NOTE lint level defined here
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#[repr(C)] struct As { x: Box<i8> }
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#[repr(C)] enum Ae { Ae(Box<i8>), _None }
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struct Bs { x: Box<i8> }
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enum Be { Be(Box<i8>), _None }
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#[repr(C)] struct Cs { x: Box<i8> }
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//~^ NOTE the `#[repr(C)]` attribute is attached here
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impl Drop for Cs { fn drop(&mut self) { } }
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//~^ ERROR implementing Drop adds hidden state to types, possibly conflicting with `#[repr(C)]`
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#[repr(C)] enum Ce { Ce(Box<i8>), _None }
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//~^ NOTE the `#[repr(C)]` attribute is attached here
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impl Drop for Ce { fn drop(&mut self) { } }
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//~^ ERROR implementing Drop adds hidden state to types, possibly conflicting with `#[repr(C)]`
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#[unsafe_no_drop_flag]
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#[repr(C)] struct Ds { x: Box<i8> }
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impl Drop for Ds { fn drop(&mut self) { } }
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#[unsafe_no_drop_flag]
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#[repr(C)] enum De { De(Box<i8>), _None }
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impl Drop for De { fn drop(&mut self) { } }
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fn main() {
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let a = As { x: Box::new(3) };
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let b = Bs { x: Box::new(3) };
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let c = Cs { x: Box::new(3) };
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let d = Ds { x: Box::new(3) };
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println!("{:?}", (*a.x, *b.x, *c.x, *d.x));
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let _a = Ae::Ae(Box::new(3));
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let _b = Be::Be(Box::new(3));
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let _c = Ce::Ce(Box::new(3));
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let _d = De::De(Box::new(3));
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}
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