--- llvm-3.4.2.ebuild.orig	2014-07-03 18:02:26 +0900
+++ llvm-3.4.2.ebuild	2014-07-03 18:03:16 +0900
@@ -42,8 +42,10 @@
 	ncurses? ( sys-libs/ncurses:5=[${MULTILIB_USEDEP}] )
 	ocaml? ( dev-lang/ocaml:0= )
 	udis86? ( dev-libs/udis86:0=[pic(+),${MULTILIB_USEDEP}] )"
+# gcc-4.7.4 bug breaks llvm build, #515882
 DEPEND="${COMMON_DEPEND}
 	dev-lang/perl
+	!~sys-devel/gcc-4.7.4
 	>=sys-devel/make-3.81
 	>=sys-devel/flex-2.5.4
 	>=sys-devel/bison-1.875d