1 files changed, 3 insertions, 3 deletions
diff --git a/thread.c b/thread.c
index 97c4ab903b..8708e6adc2 100644
--- a/thread.c
+++ b/thread.c
@@ -3912,7 +3912,7 @@ thgroup_memsize(const void *ptr)
 static const rb_data_type_t thgroup_data_type = {
     "thgroup",
     {NULL, RUBY_TYPED_DEFAULT_FREE, thgroup_memsize,},
-    NULL, NULL, RUBY_TYPED_FREE_IMMEDIATELY
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
 /*
@@ -4134,7 +4134,7 @@ mutex_memsize(const void *ptr)
 static const rb_data_type_t mutex_data_type = {
     "mutex",
     {mutex_mark, mutex_free, mutex_memsize,},
-    NULL, NULL, RUBY_TYPED_FREE_IMMEDIATELY
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
 VALUE
@@ -4584,7 +4584,7 @@ thread_shield_mark(void *ptr)
 static const rb_data_type_t thread_shield_data_type = {
     "thread_shield",
     {thread_shield_mark, 0, 0,},
-    NULL, NULL, RUBY_TYPED_FREE_IMMEDIATELY
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
 static VALUE