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fix(rt): add fallback for zero-sized constants in operand decoding #821

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fix(rt): add fallback for zero-sized constants in operand decoding #821

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7 changes: 7 additions & 0 deletions kmir/src/kmir/kdist/mir-semantics/rt/data.md
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Expand Up @@ -128,6 +128,13 @@ Constant operands are simply decoded according to their type.
...
</k>
requires typeInfoVoidType =/=K lookupTy(TY)

// Fallback for zero-sized constants whose type metadata was not emitted.
rule <k> operandConstant(constOperand(_, _, mirConst(constantKindZeroSized, TY, _)))
=> Aggregate(variantIdx(0), .List)
...
</k>
requires typeInfoVoidType ==K lookupTy(TY)
```

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