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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 /library/core/tests/ops/control_flow.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 '')
-rw-r--r-- | library/core/tests/ops/control_flow.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/library/core/tests/ops/control_flow.rs b/library/core/tests/ops/control_flow.rs new file mode 100644 index 000000000..eacfd63a6 --- /dev/null +++ b/library/core/tests/ops/control_flow.rs @@ -0,0 +1,18 @@ +use core::intrinsics::discriminant_value; +use core::ops::ControlFlow; + +#[test] +fn control_flow_discriminants_match_result() { + // This isn't stable surface area, but helps keep `?` cheap between them, + // even if LLVM can't always take advantage of it right now. + // (Sadly Result and Option are inconsistent, so ControlFlow can't match both.) + + assert_eq!( + discriminant_value(&ControlFlow::<i32, i32>::Break(3)), + discriminant_value(&Result::<i32, i32>::Err(3)), + ); + assert_eq!( + discriminant_value(&ControlFlow::<i32, i32>::Continue(3)), + discriminant_value(&Result::<i32, i32>::Ok(3)), + ); +} |