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| -rw-r--r-- | src/test/compile-fail/variance-issue-20533.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/compile-fail/variance-issue-20533.rs b/src/test/compile-fail/variance-issue-20533.rs new file mode 100644 index 00000000000..0254f56bd1a --- /dev/null +++ b/src/test/compile-fail/variance-issue-20533.rs @@ -0,0 +1,54 @@ +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Regression test for issue #20533. At some point, only 1 out of the +// 3 errors below were being reported. + +use std::marker::PhantomData; + +fn foo<'a, T>(_x: &'a T) -> PhantomData<&'a ()> { + PhantomData +} + +struct Wrap<T>(T); + +fn bar<'a, T>(_x: &'a T) -> Wrap<PhantomData<&'a ()>> { + Wrap(PhantomData) +} + +struct Baked<'a>(PhantomData<&'a ()>); + +fn baz<'a, T>(_x: &'a T) -> Baked<'a> { + Baked(PhantomData) +} + +struct AffineU32(u32); + +fn main() { + { + let a = AffineU32(1_u32); + let x = foo(&a); + drop(a); //~ ERROR cannot move out of `a` + drop(x); + } + { + let a = AffineU32(1_u32); + let x = bar(&a); + drop(a); //~ ERROR cannot move out of `a` + drop(x); + } + { + let a = AffineU32(1_u32); + let x = baz(&a); + drop(a); //~ ERROR cannot move out of `a` + drop(x); + } +} + |
