1 files changed, 3 insertions, 0 deletions
diff --git a/thread.c b/thread.c
index e501f78675..ef869c6c28 100644
--- a/thread.c
+++ b/thread.c
@@ -3957,6 +3957,7 @@ 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
 };
 
 /*
@@ -4195,6 +4196,7 @@ 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
 };
 
 VALUE
@@ -4644,6 +4646,7 @@ 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
 };
 
 static VALUE