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fix possible crash in case null pointer is passed to QCryptographicHash::addData()

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-03-12 00:34:27 +02:00
parent f1bbf0c42e
commit c228fd6100
1 changed files with 2 additions and 4 deletions
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6
src/network/kernel/qcryptographichash.cpp
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@ -165,11 +165,9 @@ void QCryptographicHash::addData(const char *data, int length)
*/ */
bool QCryptographicHash::addData(QIODevice* device) bool QCryptographicHash::addData(QIODevice* device)
{ {
if (!device->isReadable()) if (!device || !device->isReadable() || !device->isOpen()) {
return false;
if (!device->isOpen())
return false; return false;
}
QSTACKARRAY(char, buffer, QT_BUFFSIZE); QSTACKARRAY(char, buffer, QT_BUFFSIZE);
int length; int length;