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ORC: critical bugfix for mixing acyclic refs with cyclic refs [backport:1.4] (#17991)

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Andreas Rumpf 2021-05-11 16:21:29 +02:00 • committed by GitHub
commit 2c2ec48bc4
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2 changed files with 12 additions and 8 deletions
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compiler/types.nim
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@ -381,7 +381,8 @@ proc isFinal*(t: PType): bool =
proc canFormAcycle*(typ: PType): bool =
var marker = initIntSet()
result = canFormAcycleAux(marker, typ, typ.id)
let t = skipTypes(typ, abstractInst+{tyOwned}-{tyTypeDesc})
result = canFormAcycleAux(marker, t, t.id)
proc mutateTypeAux(marker: var IntSet, t: PType, iter: TTypeMutator,
closure: RootRef): PType