1 files changed, 1 insertions, 1 deletions
diff --git a/rubyio.h b/rubyio.h
index 63fcf74f85..ae4db3bb0f 100644
--- a/rubyio.h
+++ b/rubyio.h
@@ -78,7 +78,7 @@ int rb_io_wait_readable _((int));
 int rb_io_wait_writable _((int));
 
 VALUE rb_io_taint_check _((VALUE));
-void rb_eof_error _((void));
+NORETURN(void rb_eof_error _((void)));
 
 void rb_read_check _((FILE*));
 int rb_read_pending _((FILE*));