diff -up hotspot-v1.0.0/3rdparty/perfparser/app/perfunwind.cpp.than hotspot-v1.0.0/3rdparty/perfparser/app/perfunwind.cpp
--- hotspot-v1.0.0/3rdparty/perfparser/app/perfunwind.cpp.than	2017-07-13 05:27:09.483868319 -0400
+++ hotspot-v1.0.0/3rdparty/perfparser/app/perfunwind.cpp	2017-07-13 05:28:06.064841541 -0400
@@ -113,7 +113,7 @@ PerfUnwind::PerfUnwind(QIODevice *output
         // Write minimal header, consisting of magic and data stream version we're going to use.
         const char magic[] = "QPERFSTREAM";
         output->write(magic, sizeof(magic));
-        qint32 dataStreamVersion = qToLittleEndian(QDataStream::Qt_DefaultCompiledVersion);
+        qint32 dataStreamVersion = qToLittleEndian((qint32) QDataStream::Qt_DefaultCompiledVersion);
         output->write(reinterpret_cast<const char *>(&dataStreamVersion), sizeof(qint32));
     }
 }