1 files changed, 3 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index 997ed38f13..257bdce668 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -260,6 +260,7 @@ enum ruby_special_exceptions {
     ruby_error_reenter,
     ruby_error_nomemory,
     ruby_error_sysstack,
+    ruby_error_closed_stream,
     ruby_special_error_count
 };
 
@@ -395,6 +396,8 @@ typedef struct rb_thread_struct {
     /* passing state */
     int state;
 
+    int waiting_fd;
+
     /* for rb_iterate */
     const rb_block_t *passed_block;