interpret/write_discriminant: when encoding niched variant, ensure the stored value matches

2024-02-10 15:26:55 +01:00
parent 0809f78c19
commit 18ed966ab5
6 changed files with 71 additions and 0 deletions
--- a/compiler/rustc_middle/src/mir/interpret/error.rs
+++ b/compiler/rustc_middle/src/mir/interpret/error.rs
@@ -356,6 +356,8 @@ pub enum UndefinedBehaviorInfo<'tcx> {
    UninhabitedEnumVariantWritten(VariantIdx),
    /// An uninhabited enum variant is projected.
    UninhabitedEnumVariantRead(VariantIdx),
+    /// Trying to set discriminant to the niched variant, but the value does not match.
+    InvalidNichedEnumVariantWritten { enum_ty: Ty<'tcx> },
    /// ABI-incompatible argument types.
    AbiMismatchArgument { caller_ty: Ty<'tcx>, callee_ty: Ty<'tcx> },
    /// ABI-incompatible return types.