diff --git a/openssh/buffer.c b/openssh/buffer.c
index 59336d9..823d03c 100644
--- a/openssh/buffer.c
+++ b/openssh/buffer.c
@@ -55,6 +55,7 @@ buffer_check_alloc(Buffer *buffer, u_int len)
 	if (ret == SSH_ERR_NO_BUFFER_SPACE)
 		return 0;
 	fatal("%s: %s", __func__, ssh_err(ret));
+	return 0;	/* unreachable */
 }
 
 int
@@ -86,6 +87,7 @@ buffer_consume_ret(Buffer *buffer, u_int bytes)
 	if (ret == SSH_ERR_MESSAGE_INCOMPLETE)
 		return -1;
 	fatal("%s: %s", __func__, ssh_err(ret));
+	return 0;	/* unreachable */
 }
 
 void
@@ -105,6 +107,7 @@ buffer_consume_end_ret(Buffer *buffer, u_int bytes)
 	if (ret == SSH_ERR_MESSAGE_INCOMPLETE)
 		return -1;
 	fatal("%s: %s", __func__, ssh_err(ret));
+	return 0;	/* unreachable */
 }
 
 void