Index: buffer/buffer_0.c
--- buffer/buffer_0.c.orig
+++ buffer/buffer_0.c
@@ -6,7 +6,7 @@ static ssize_t b0read(int fd,char* buf, size_t len) {
   return read(fd,buf,len);
 }
 
-char buffer_0_space[BUFFER_INSIZE];
+static char buffer_0_space[BUFFER_INSIZE];
 static buffer it = BUFFER_INIT_READ(b0read,0,buffer_0_space,sizeof buffer_0_space);
 buffer *buffer_0 = ⁢