--- src/corelib/io/qprocess_unix.cpp

+++ src/corelib/io/qprocess_unix.cpp

@@ -839,10 +839,14 @@ bool QProcessPrivate::processStarted()

 qint64 QProcessPrivate::bytesAvailableFromStdout() const

 {

-    size_t nbytes = 0;

+#if defined (Q_OS_IRIX)

+    off_t nbytes = 0;

+#else

+    int nbytes = 0;

+#endif

     qint64 available = 0;

     if (::ioctl(stdoutChannel.pipe[0], FIONREAD, (char *) &nbytes) >= 0)

-        available = (qint64) *((int *) &nbytes);

+        available = (qint64) nbytes;

 #if defined (QPROCESS_DEBUG)

     qDebug("QProcessPrivate::bytesAvailableFromStdout() == %lld", available);

 #endif

--- src/network/socket/qnativesocketengine_unix.cpp

+++ src/network/socket/qnativesocketengine_unix.cpp

@@ -515,18 +515,18 @@ qint64 QNativeSocketEnginePrivate::nativ

       ioctl() to be an int, which is normally 32-bit even on 64-bit

       machines.

-      IRIX, on the other hand, expects a size_t, which is 64-bit on

+      IRIX, on the other hand, expects a off_t, which is 64-bit on

       64-bit machines.

-

-      So, the solution is to use size_t initialized to zero to make

-      sure all bits are set to zero, preventing underflow with the

-      FreeBSD/Linux/Solaris ioctls.

     */

-    size_t nbytes = 0;

+#if defined (Q_OS_IRIX)

+    off_t nbytes = 0;

+#else

+    int nbytes = 0;

+#endif

     // gives shorter than true amounts on Unix domain sockets.

     qint64 available = 0;

     if (::ioctl(socketDescriptor, FIONREAD, (char *) &nbytes) >= 0)

-        available = (qint64) *((int *) &nbytes);

+        available = (qint64) nbytes;

 #if defined (QNATIVESOCKETENGINE_DEBUG)

     qDebug("QNativeSocketEnginePrivate::nativeBytesAvailable() == %lli", available);