--- qtcore-4.8.4-r4.ebuild.orig	2013-03-22 15:37:11.980374141 +0100
+++ qtcore-4.8.4-r4.ebuild	2013-03-22 16:01:42.699488170 +0100
@@ -83,6 +83,9 @@
 		echo "CONFIG+=nostrip" >> "${S}"/src/plugins/codecs/${i}/${i}.pro
 	done
 
+	# bug 406829
+	sed "s: -D_XOPEN_SOURCE=500::" -i "${S}"/mkspecs/solaris-g++-64/qmake.conf || die "sed failed"
+
 	qt4-build_src_prepare
 
 	# bug 172219