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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 /compiler | |
| parent | c8e94975a6541e947a1bd4971e084c8ba637f2b6 (diff) | |
| download | rust-eebf676bf8f76fcdfa610e7e46ab6c135a9cd2d0.tar.gz rust-eebf676bf8f76fcdfa610e7e46ab6c135a9cd2d0.zip | |
fix getting the discriminant of a zero-variant enum
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_middle/src/ty/sty.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/ty/sty.rs b/compiler/rustc_middle/src/ty/sty.rs index e57075ed338..59601e14849 100644 --- a/compiler/rustc_middle/src/ty/sty.rs +++ b/compiler/rustc_middle/src/ty/sty.rs @@ -2067,7 +2067,9 @@ impl<'tcx> TyS<'tcx> { ) -> Option<Discr<'tcx>> { match self.kind() { TyKind::Adt(adt, _) if adt.variants.is_empty() => { - bug!("discriminant_for_variant called on zero variant enum"); + // This can actually happen during CTFE, see + // https://github.com/rust-lang/rust/issues/89765. + None } TyKind::Adt(adt, _) if adt.is_enum() => { Some(adt.discriminant_for_variant(tcx, variant_index)) |