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authorck <qt-info@nokia.com>2010-01-14 14:41:02 (GMT)
committerck <qt-info@nokia.com>2010-01-14 14:41:02 (GMT)
commit035bb4a1363443df7bb3fd80f0b2e7d548f3d3a1 (patch)
tree32db664f493a2280fae24ea0e7c66129951c1914 /tools/assistant/lib/qhelp_global.cpp
parent9b59e3a664ef1162e0f90ba7e7fe9356bae05d74 (diff)
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Assistant: Fix bug that can lead to infinite loop in edge cases.
Diffstat (limited to 'tools/assistant/lib/qhelp_global.cpp')
-rw-r--r--tools/assistant/lib/qhelp_global.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/assistant/lib/qhelp_global.cpp b/tools/assistant/lib/qhelp_global.cpp
index e6a26c4..8e96b55 100644
--- a/tools/assistant/lib/qhelp_global.cpp
+++ b/tools/assistant/lib/qhelp_global.cpp
@@ -89,10 +89,11 @@ QString QHelpGlobal::codecFromHtmlData(const QByteArray &data)
QString head = QString::fromUtf8(data.constData(), qMin(1000, data.size()));
int start = head.indexOf(QLatin1String("<meta"), 0, Qt::CaseInsensitive);
if (start > 0) {
- int end;
QRegExp r(QLatin1String("charset=([^\"\\s]+)"));
while (start != -1) {
- end = head.indexOf(QLatin1Char('>'), start) + 1;
+ const int end = head.indexOf(QLatin1Char('>'), start) + 1;
+ if (end <= start)
+ break;
const QString &meta = head.mid(start, end - start).toLower();
if (r.indexIn(meta) != -1)
return r.cap(1);