Disable force_align_arg_pointer function attribute with MinGW-w64

The force_align_arg_pointer function attribute is not necessary for
MinGW-w64 to align stack for SSE and generates a compiler warning as
it is ignored. Do not use force_align_arg_pointer with MinGW-w64 to
silence the warning.

Change-Id: I58a754dc3ec01b36a1d3c9490f45ccf0824468ba
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 5f2445f..a8547a3 100644 (file)
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -386,7 +386,7 @@ QT_END_INCLUDE_NAMESPACE
 //defines the type for the WNDPROC on windows
 //the alignment needs to be forced for sse2 to not crash with mingw
 #if defined(Q_OS_WIN)
-#  if defined(Q_CC_MINGW)
+#  if defined(Q_CC_MINGW) && !defined(Q_OS_WIN64)
 #    define QT_ENSURE_STACK_ALIGNED_FOR_SSE __attribute__ ((force_align_arg_pointer))
 #  else
 #    define QT_ENSURE_STACK_ALIGNED_FOR_SSE