1 files changed, 5 insertions, 0 deletions
diff --git a/yarvcore.h b/yarvcore.h
index 181e86d34e..ba99c8a2a5 100644
--- a/yarvcore.h
+++ b/yarvcore.h
@@ -410,6 +410,10 @@ struct rb_vm_tag {
     struct rb_vm_tag *prev;
 };
 
+struct rb_vm_trap_tag {
+    struct rb_vm_trap_tag *prev;
+};
+
 #define RUBY_VM_VALUE_CACHE_SIZE 0x1000
 #define USE_VALUE_CACHE 0
 
@@ -460,6 +464,7 @@ struct rb_thread_struct
     rb_thread_lock_t interrupt_lock;
 
     struct rb_vm_tag *tag;
+    struct rb_vm_trap_tag *trap_tag;
 
     int parse_in_eval;