1 files changed, 1 insertions, 0 deletions
diff --git a/vm.c b/vm.c
index bdca822ab2..1e8056a36d 100644
--- a/vm.c
+++ b/vm.c
@@ -378,6 +378,7 @@ VALUE rb_block_param_proxy;
 #define ruby_vm_redefined_flag GET_VM()->redefined_flag
 VALUE ruby_vm_const_missing_count = 0;
 rb_vm_t *ruby_current_vm_ptr = NULL;
+rb_ractor_t *ruby_single_main_ractor;
 
 #ifdef RB_THREAD_LOCAL_SPECIFIER
 RB_THREAD_LOCAL_SPECIFIER rb_execution_context_t *ruby_current_ec;