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fix #16758 Nim crashes in fixAbstractType (#20855)

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* fix #16758 Nim crashes in fixAbstractType

* Update compiler/semexprs.nim

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
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Bung 2022-12-11 13:58:29 +08:00 • committed by GitHub
commit 1585bfec3b
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compiler/semexprs.nim
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@ -693,6 +693,9 @@ proc semArrayConstr(c: PContext, n: PNode, flags: TExprFlags; expectedType: PTyp
proc fixAbstractType(c: PContext, n: PNode) =
for i in 1..<n.len:
let it = n[i]
if it == nil:
localError(c.config, n.info, "'$1' has nil child at index $2" % [renderTree(n, {renderNoComments}), $i])
return
# do not get rid of nkHiddenSubConv for OpenArrays, the codegen needs it:
if it.kind == nkHiddenSubConv and
skipTypes(it.typ, abstractVar).kind notin {tyOpenArray, tyVarargs}: