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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/suggestions/box-future-wrong-output.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/box-future-wrong-output.rs b/src/test/ui/suggestions/box-future-wrong-output.rs new file mode 100644 index 000000000..d49819fcb --- /dev/null +++ b/src/test/ui/suggestions/box-future-wrong-output.rs @@ -0,0 +1,22 @@ +// Issue #72117 +// edition:2018 + +use core::future::Future; +use core::pin::Pin; + +pub type BoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + Send + 'a>>; + +impl<T: ?Sized> FutureExt for T where T: Future {} +trait FutureExt: Future { + fn boxed<'a>(self) -> BoxFuture<'a, Self::Output> + where + Self: Sized + Send + 'a, + { + Box::pin(self) + } +} + +fn main() { + let _: BoxFuture<'static, bool> = async {}.boxed(); + //~^ ERROR: mismatched types +} |