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Allow recursive closure iterators (#19939)

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Tanguy 2022-06-30 23:19:04 +02:00 • committed by GitHub
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3 changed files with 16 additions and 5 deletions
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compiler/semexprs.nim
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@ -886,7 +886,8 @@ proc semOverloadedCallAnalyseEffects(c: PContext, n: PNode, nOrig: PNode,
case callee.kind
of skMacro, skTemplate: discard
else:
if callee.kind == skIterator and callee.id == c.p.owner.id:
if callee.kind == skIterator and callee.id == c.p.owner.id and
not isClosureIterator(c.p.owner.typ):
localError(c.config, n.info, errRecursiveDependencyIteratorX % callee.name.s)
# error correction, prevents endless for loop elimination in transf.
# See bug #2051: