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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs')
-rw-r--r-- | src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs b/src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs new file mode 100644 index 000000000..7e9c5492d --- /dev/null +++ b/src/test/ui/suggestions/expected-boxed-future-isnt-pinned.rs @@ -0,0 +1,33 @@ +// edition:2018 +#![allow(dead_code)] +use std::future::Future; +use std::pin::Pin; + +type BoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + Send + 'a>>; +// ^^^^^^^^^ This would come from the `futures` crate in real code. + +fn foo<F: Future<Output=i32> + Send + 'static>(x: F) -> BoxFuture<'static, i32> { + // We could instead use an `async` block, but this way we have no std spans. + x //~ ERROR mismatched types +} + +fn bar<F: Future<Output=i32> + Send + 'static>(x: F) -> BoxFuture<'static, i32> { + Box::new(x) //~ ERROR mismatched types +} + +fn baz<F: Future<Output=i32> + Send + 'static>(x: F) -> BoxFuture<'static, i32> { + Pin::new(x) //~ ERROR mismatched types + //~^ ERROR E0277 +} + +fn qux<F: Future<Output=i32> + Send + 'static>(x: F) -> BoxFuture<'static, i32> { + Pin::new(Box::new(x)) //~ ERROR E0277 +} + +fn zap() -> BoxFuture<'static, i32> { + async { //~ ERROR mismatched types + 42 + } +} + +fn main() {} |