From c2f2ac7db37936375307378dceee6f62fe881882 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Wed, 11 Jun 2025 09:03:26 +0200
Subject: [PATCH] shape.c: Fix rb_bug call to use correct format for size_t

---
 shape.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shape.c b/shape.c
index a7dff90ce3..20cbaf54a4 100644
--- a/shape.c
+++ b/shape.c
@@ -1222,7 +1222,7 @@ rb_shape_verify_consistency(VALUE obj, shape_id_t shape_id)
         size_t actual_slot_size = rb_gc_obj_slot_size(obj);
 
         if (shape_id_slot_size != actual_slot_size) {
-            rb_bug("shape_id heap_index flags mismatch: shape_id_slot_size=%lu, gc_slot_size=%lu\n", shape_id_slot_size, actual_slot_size);
+            rb_bug("shape_id heap_index flags mismatch: shape_id_slot_size=%zu, gc_slot_size=%zu\n", shape_id_slot_size, actual_slot_size);
         }
     }
     else {