1 files changed, 3 insertions, 2 deletions
diff --git a/src/corelib/json/qjsonparser_p.h b/src/corelib/json/qjsonparser_p.h
index afa2c1a8cf..379256847f 100644
--- a/src/corelib/json/qjsonparser_p.h
+++ b/src/corelib/json/qjsonparser_p.h
@@ -108,11 +108,12 @@ private:
     inline int reserveSpace(int space) {
         if (current + space >= dataLength) {
             dataLength = 2*dataLength + space;
-            data = (char *)realloc(data, dataLength);
-            if (!data) {
+            char *newData = (char *)realloc(data, dataLength);
+            if (!newData) {
                 lastError = QJsonParseError::DocumentTooLarge;
                 return -1;
             }
+            data = newData;
         }
         int pos = current;
         current += space;