diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/async-await/issues/issue-59972.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/async-await/issues/issue-59972.rs')
-rw-r--r-- | src/test/ui/async-await/issues/issue-59972.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/async-await/issues/issue-59972.rs b/src/test/ui/async-await/issues/issue-59972.rs new file mode 100644 index 000000000..c2e24a96b --- /dev/null +++ b/src/test/ui/async-await/issues/issue-59972.rs @@ -0,0 +1,34 @@ +// Incorrect handling of uninhabited types could cause us to mark generator +// types as entirely uninhabited, when they were in fact constructible. This +// caused us to hit "unreachable" code (illegal instruction on x86). + +// run-pass + +// compile-flags: --edition=2018 -Aunused + +pub enum Uninhabited { } + +fn uninhabited_async() -> Uninhabited { + unreachable!() +} + +async fn noop() { } + +async fn contains_never() { + let error = uninhabited_async(); + noop().await; + let error2 = error; +} + +async fn overlap_never() { + let error1 = uninhabited_async(); + noop().await; + let error2 = uninhabited_async(); + drop(error1); + noop().await; + drop(error2); +} + +#[allow(unused_must_use)] +fn main() { +} |