Don't parse XML symbols longer than 4096 characters
It is slow and will use too much memory. Fixes: QTBUG-91889 Change-Id: I45c5e6038357c87bbb85b1ace17ef39a2a814ea0 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> (cherry picked from commit 38e111158a38507c63fd70f9ee18b9116b537976) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
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@ -1297,6 +1297,11 @@ inline int QXmlStreamReaderPrivate::fastScanName(int *prefix)
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int n = 0;
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uint c;
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while ((c = getChar()) != StreamEOF) {
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if (n >= 4096) {
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// This is too long to be a sensible name, and
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// can exhaust memory
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return 0;
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}
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switch (c) {
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case '\n':
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case ' ':
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