Lysandros Nikolaou 02cdfc93f8
bpo-42218: Correctly handle errors in left-recursive rules (GH-23065)
Left-recursive rules need to check for errors explicitly, since
even if the rule returns NULL, the parsing might continue and lead
to long-distance failures.

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
2020-10-31 20:31:41 +02:00
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