1 files changed, 2 insertions, 0 deletions
diff --git a/rubyio.h b/rubyio.h
index dadc4d1433..1df37b1501 100644
--- a/rubyio.h
+++ b/rubyio.h
@@ -59,4 +59,6 @@ void rb_io_unbuffered _((OpenFile*));
 void rb_io_check_closed _((OpenFile*));
 void rb_eof_error _((void));
 
+void rb_read_check _((FILE*));	/* thread aware check */
+
 #endif