qjson: add missed Q_CHECK_PTRv5.12.0-beta3

There might be dereferencing of a potential null pointer 'h'

Task-number: QTBUG-71156
Change-Id: I63c34f8cba3e358f109d70ff9b34199c31895202
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mikhail Svetkin <mikhail.svetkin@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/corelib/serialization/qjsonparser.cpp b/src/corelib/serialization/qjsonparser.cpp
index 39738b90a8..bfba95520e 100644
--- a/src/corelib/serialization/qjsonparser.cpp
+++ b/src/corelib/serialization/qjsonparser.cpp
@@ -304,6 +304,7 @@ QJsonDocument Parser::parse(QJsonParseError *error)
     // allocate some space
     dataLength = qMax(end - json, (ptrdiff_t) 256);
     data = (char *)malloc(dataLength);
+    Q_CHECK_PTR(data);
 
     // fill in Header data
     QJsonPrivate::Header *h = (QJsonPrivate::Header *)data;