Add missing debug counter for imemo_subclasses

2 files changed, 3 insertions, 1 deletions

diff --git a/debug_counter.h b/debug_counter.h
index d326aa0f18..3b9c385751 100644
--- a/debug_counter.h
+++ b/debug_counter.h
@@ -315,7 +315,8 @@ RB_DEBUG_COUNTER(obj_imemo_callinfo)
 RB_DEBUG_COUNTER(obj_imemo_callcache)
 RB_DEBUG_COUNTER(obj_imemo_constcache)
 RB_DEBUG_COUNTER(obj_imemo_fields)
-
+RB_DEBUG_COUNTER(obj_imemo_subclasses)
+    
 RB_DEBUG_COUNTER(opt_new_hit)
 RB_DEBUG_COUNTER(opt_new_miss)
 
diff --git a/imemo.c b/imemo.c
index d1d8cc8cb9..7f4294381d 100644
--- a/imemo.c
+++ b/imemo.c
@@ -692,6 +692,7 @@ rb_imemo_free(VALUE obj)
             struct rb_subclasses *subs = (struct rb_subclasses *)obj;
             SIZED_FREE_N(subs->as.external, subs->capacity);
         }
+        RB_DEBUG_COUNTER_INC(obj_imemo_subclasses);
         break;
       }
       default: