From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/diverging-fallback-option.rs | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 tests/ui/diverging-fallback-option.rs (limited to 'tests/ui/diverging-fallback-option.rs') diff --git a/tests/ui/diverging-fallback-option.rs b/tests/ui/diverging-fallback-option.rs new file mode 100644 index 000000000..46bdfc96d --- /dev/null +++ b/tests/ui/diverging-fallback-option.rs @@ -0,0 +1,14 @@ +// run-pass + +#![allow(warnings)] + +// Here the type of `c` is `Option`, where `?T` is unconstrained. +// Because there is data-flow from the `{ return; }` block, which +// diverges and hence has type `!`, into `c`, we will default `?T` to +// `!`, and hence this code compiles rather than failing and requiring +// a type annotation. + +fn main() { + let c = Some({ return; }); + c.unwrap(); +} -- cgit v1.2.3