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| author | Ralf Jung <post@ralfj.de> | 2021-11-14 13:28:47 -0500 |
|---|---|---|
| committer | Ralf Jung <post@ralfj.de> | 2021-11-14 13:29:21 -0500 |
| commit | eebf676bf8f76fcdfa610e7e46ab6c135a9cd2d0 (patch) | |
| tree | 214d029f6c2f58a6ba84b5e830db1856e2159144 /src/test | |
| parent | c8e94975a6541e947a1bd4971e084c8ba637f2b6 (diff) | |
| download | rust-eebf676bf8f76fcdfa610e7e46ab6c135a9cd2d0.tar.gz rust-eebf676bf8f76fcdfa610e7e46ab6c135a9cd2d0.zip | |
fix getting the discriminant of a zero-variant enum
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/ui/consts/const_discriminant.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/test/ui/consts/const_discriminant.rs b/src/test/ui/consts/const_discriminant.rs index a47f6af0296..a9c0217ae24 100644 --- a/src/test/ui/consts/const_discriminant.rs +++ b/src/test/ui/consts/const_discriminant.rs @@ -25,6 +25,12 @@ enum SingleVariant { const TEST_V: Discriminant<SingleVariant> = discriminant(&SingleVariant::V); +pub const TEST_VOID: () = { + // This is UB, but CTFE does not check validity so it does not detect this. + unsafe { std::mem::discriminant(&*(&() as *const () as *const Void)); }; +}; + + fn main() { assert_eq!(TEST_A, TEST_A_OTHER); assert_eq!(TEST_A, discriminant(black_box(&Test::A(17)))); |