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regexp: Fix null deref in xmlFAFinishReduceEpsilonTransitions

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Short-lived regression found by OSS-Fuzz.
This commit is contained in:
Nick Wellnhofer 2023-05-04 12:47:00 +02:00
parent 8d5e33ef3e
commit a800b7e058
1 changed files with 2 additions and 0 deletions
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xmlregexp.c
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@ -1871,6 +1871,8 @@ xmlFAFinishReduceEpsilonTransitions(xmlRegParserCtxtPtr ctxt, int tonr) {
xmlRegStatePtr to;
to = ctxt->states[tonr];
if (to == NULL)
return;
if ((to->mark == XML_REGEXP_MARK_START) ||
(to->mark == XML_REGEXP_MARK_NORMAL))
return;