https://bugs.gentoo.org/880433

--- a/etc/c_skel.c
+++ b/etc/c_skel.c
@@ -112,8 +112,7 @@ YYNODESTATE *state__;
 unsigned int size__;
 {
 #else
-void *yynodealloc(size__)
-unsigned int size__;
+void *yynodealloc(unsigned int size__)
 {
 	YYNODESTATE *state__ = &fixed_state__;
 #endif