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Fix null pointer deref in docs with no root element

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From https://bugzilla.gnome.org/show_bug.cgi?id=758514
This commit is contained in:
Hugh Davenport 2016-05-04 10:55:49 +08:00 committed by Daniel Veillard
parent 90da33cebe
commit b8e0fa3489
1 changed files with 6 additions and 0 deletions
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6
xmllint.c
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@ -2002,6 +2002,12 @@ static void walkDoc(xmlDocPtr doc) {
xmlNsPtr ns;
root = xmlDocGetRootElement(doc);
if (root == NULL ) {
xmlGenericError(xmlGenericErrorContext,
"Document does not have a root element");
progresult = XMLLINT_ERR_UNCLASS;
return;
}
for (ns = root->nsDef, i = 0;ns != NULL && i < 20;ns=ns->next) {
namespaces[i++] = ns->href;
namespaces[i++] = ns->prefix;