Avoid warning on Ruby 3.2

Without this, running on Ruby 3.2 gives the following warning: tkutil.so: warning: undefining the allocator of T_DATA class TkUtil::CallbackSubst::Info
ruby · Jan 2, 2023 · bf02b2a · bf02b2a
1 parent 1972600
commit bf02b2a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ext/tk/tkutil/tkutil.c b/ext/tk/tkutil/tkutil.c
@@ -1797,6 +1797,7 @@ Init_tkutil(void)
     rb_define_singleton_method(cCB_SUBST, "inspect", cbsubst_inspect, 0);
 
     cSUBST_INFO = rb_define_class_under(cCB_SUBST, "Info", rb_cObject);
+    rb_undef_alloc_func(cSUBST_INFO);
     rb_define_singleton_method(cSUBST_INFO, "inspect", substinfo_inspect, 0);
 
     ID_SUBST_INFO = rb_intern("SUBST_INFO");