1 files changed, 6 insertions, 5 deletions
diff --git a/rubyio.h b/rubyio.h
index 77c37fc45f..8bb75b6972 100644
--- a/rubyio.h
+++ b/rubyio.h
@@ -50,11 +50,12 @@ typedef struct OpenFile {
 
 FILE *rb_fopen _((const char*, const char*));
 FILE *rb_fdopen _((int, const char*));
-void rb_io_check_writable _((OpenFile *));
-void rb_io_check_readable _((OpenFile *));
-void rb_io_fptr_finalize _((OpenFile *));
-void rb_io_unbuffered _((OpenFile *));
-void rb_io_check_closed _((OpenFile *));
+int  rb_io_mode_flags _((const char*));
+void rb_io_check_writable _((OpenFile*));
+void rb_io_check_readable _((OpenFile*));
+void rb_io_fptr_finalize _((OpenFile*));
+void rb_io_unbuffered _((OpenFile*));
+void rb_io_check_closed _((OpenFile*));
 void rb_eof_error _((void));
 
 #endif