undefine alloc functions for C extensions

per guidance in doc/extension.rdoc, these classes now undefine their
alloc functions:

- ObjectSpace::InternalObjectWrapper
- Socket::Ifaddr

1 files changed, 1 insertions, 0 deletions

diff --git a/ext/socket/ifaddr.c b/ext/socket/ifaddr.c
index da013256cb..1da259bd6f 100644
--- a/ext/socket/ifaddr.c
+++ b/ext/socket/ifaddr.c
@@ -460,6 +460,7 @@ rsock_init_sockifaddr(void)
      * Socket::Ifaddr represents a result of getifaddrs() function.
      */
     rb_cSockIfaddr = rb_define_class_under(rb_cSocket, "Ifaddr", rb_cObject);
+    rb_undef_alloc_func(rb_cSockIfaddr);
     rb_define_method(rb_cSockIfaddr, "inspect", ifaddr_inspect, 0);
     rb_define_method(rb_cSockIfaddr, "name", ifaddr_name, 0);
     rb_define_method(rb_cSockIfaddr, "ifindex", ifaddr_ifindex, 0);