1 files changed, 2 insertions, 1 deletions
diff --git a/io.c b/io.c
index c0457731d0..6a0d7114d2 100644
--- a/io.c
+++ b/io.c
@@ -4670,7 +4670,8 @@ io_close_fptr(VALUE io)
     rb_io_t *fptr;
     VALUE write_io;
     rb_io_t *write_fptr;
-    LIST_HEAD(busy);
+    struct list_head busy;
+    busy.n.next = busy.n.prev = &busy.n;
 
     write_io = GetWriteIO(io);
     if (io != write_io) {