elfgcchack for buf module
diff --git a/buf.c b/buf.c
index fa0c3f6..d1756c4 100644
--- a/buf.c
+++ b/buf.c
@@ -1299,3 +1299,6 @@
     input->end = &buf->content[buf->use];
     return(0);
 }
+
+#define bottom_buf
+#include "elfgcchack.h"