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-rw-r--r--ext/socket/socket.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/socket/socket.c b/ext/socket/socket.c
index 0198a8e1d6..87ca9b874a 100644
--- a/ext/socket/socket.c
+++ b/ext/socket/socket.c
@@ -484,6 +484,7 @@ bsock_do_not_rev_lookup()
static VALUE
bsock_do_not_rev_lookup_set(self, val)
+ VALUE self, val;
{
rb_secure(4);
do_not_reverse_lookup = RTEST(val);