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Fix possible null dereference in xmlXPathIdFunction

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If a certain memory allocation fails, xmlXPathIdFunction would
dereference a null pointer.

Closes #77.
This commit is contained in:
zhouzhongyuan 2019-08-07 14:38:07 +08:00 committed by Nick Wellnhofer
parent b17e3d1c2b
commit 59028ba08c
1 changed files with 1 additions and 0 deletions
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xpath.c Normal file → Executable file
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@ -8626,6 +8626,7 @@ xmlXPathIdFunction(xmlXPathParserContextPtr ctxt, int nargs) {
return;
}
obj = xmlXPathCacheConvertString(ctxt->context, obj);
if (obj == NULL) return;
ret = xmlXPathGetElementsByIds(ctxt->context->doc, obj->stringval);
valuePush(ctxt, xmlXPathCacheWrapNodeSet(ctxt->context, ret));
xmlXPathReleaseObject(ctxt->context, obj);