merge revision(s) c0f4e4ca6d0f76985bca79314b232b787c8f008e: [Backport #18007]

	undefine alloc functions for C extensions

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

	- ObjectSpace::InternalObjectWrapper
	- Socket::Ifaddr
	---
	 ext/objspace/objspace.c | 1 +
	 ext/socket/ifaddr.c     | 1 +
	 2 files changed, 2 insertions(+)

2 files changed, 2 insertions, 0 deletions

diff --git a/ext/objspace/objspace.c b/ext/objspace/objspace.c
index 7afdfc1f6b..3fa4fd279b 100644
--- a/ext/objspace/objspace.c
+++ b/ext/objspace/objspace.c
@@ -996,6 +996,7 @@ Init_objspace(void)
      * You can use the #type method to check the type of the internal object.
      */
     rb_cInternalObjectWrapper = rb_define_class_under(rb_mObjSpace, "InternalObjectWrapper", rb_cObject);
+    rb_undef_alloc_func(rb_cInternalObjectWrapper);
     rb_define_method(rb_cInternalObjectWrapper, "type", iow_type, 0);
     rb_define_method(rb_cInternalObjectWrapper, "inspect", iow_inspect, 0);
     rb_define_method(rb_cInternalObjectWrapper, "internal_object_id", iow_internal_object_id, 0);
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);