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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/diverging-fallback-option.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/diverging-fallback-option.rs')
-rw-r--r-- | src/test/ui/diverging-fallback-option.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/diverging-fallback-option.rs b/src/test/ui/diverging-fallback-option.rs new file mode 100644 index 000000000..46bdfc96d --- /dev/null +++ b/src/test/ui/diverging-fallback-option.rs @@ -0,0 +1,14 @@ +// run-pass + +#![allow(warnings)] + +// Here the type of `c` is `Option<?T>`, 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(); +} |