--- /usr/portage/sci-libs/vtk/vtk-5.6.0-r2.ebuild	2010-07-25 06:37:00.000000000 +1200
+++ /usr/portage/sci-libs/vtk/vtk-5.6.0-r2.ebuild	2010-09-27 13:38:54.446591214 +1300
@@ -83,6 +83,10 @@ 
 	epatch "${FILESDIR}"/${P}-libpng14.patch
 	epatch "${FILESDIR}"/${P}-R.patch
 	epatch "${FILESDIR}"/${P}-odbc.patch
+	# Fix sure buffer overflow on some processors as reported by Flameyes in #338819
+	sed -e "s:CHIPNAME_STRING_LENGTH    (48 + 1):CHIPNAME_STRING_LENGTH    (79 + 1):" \
+		-i Utilities/kwsys/SystemInformation.cxx \
+		|| die "Failed to fix SystemInformation.cxx buffer overflow"
 	sed -e "s:@VTK_TCL_LIBRARY_DIR@:/usr/$(get_libdir):" \
 		-i Wrapping/Tcl/pkgIndex.tcl.in \
 		|| die "Failed to fix tcl pkgIndex file"