1 files changed, 4 insertions, 0 deletions
diff --git a/src/corelib/json/qjsonparser_p.h b/src/corelib/json/qjsonparser_p.h
index e3b95109c6..afa2c1a8cf 100644
--- a/src/corelib/json/qjsonparser_p.h
+++ b/src/corelib/json/qjsonparser_p.h
@@ -109,6 +109,10 @@ private:
         if (current + space >= dataLength) {
             dataLength = 2*dataLength + space;
             data = (char *)realloc(data, dataLength);
+            if (!data) {
+                lastError = QJsonParseError::DocumentTooLarge;
+                return -1;
+            }
         }
         int pos = current;
         current += space;