Please do not disable this patch.
All commands will be non-executable.
Abort trap: 6 (core dumped) is displayed...

Details see Gentoo Bug #511698.
https://bugs.gentoo.org/show_bug.cgi?id=511698

diff --git a/lib/libc/Makefile b/lib/libc/Makefile
index 1cc23b7..7dd458e 100644
--- a/lib/libc/Makefile
+++ b/lib/libc/Makefile
@@ -149,6 +149,6 @@ CWARNFLAGS:=	${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
 # in the future to circumvent this.
 SSP_CFLAGS:=	${SSP_CFLAGS:S/^-fstack-protector-all$/-fstack-protector/}
 # Disable stack protection for SSP symbols.
-SSP_CFLAGS:=	${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
+SSP_CFLAGS:=	${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/:C/^$/-fno-stack-protector/}
 # Generate stack unwinding tables for cancellation points
 CANCELPOINTS_CFLAGS:=	${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}
diff --git a/lib/csu/Makefile.inc b/lib/csu/Makefile.inc
index f92d87d..7a3a2f3 100644
--- a/lib/csu/Makefile.inc
+++ b/lib/csu/Makefile.inc
@@ -1,5 +1,5 @@
 # $FreeBSD: release/9.1.0/lib/csu/Makefile.inc 204757 2010-03-05 13:29:05Z uqs $
 
-SSP_CFLAGS=
+SSP_CFLAGS= -fno-stack-protector

 .include "../Makefile.inc"