[Libguestfs] [PATCH] daemon: Add an assertion to suppress a warning with GCC.
swap.c: In function 'do_mkswap_U':
swap.c:62:9: error: argument 1 null where non-null expected [-Werror=nonnull]
if (strlen (label) > SWAP_LABEL_MAX) {
^~~~~~~~~~~~~~
---
daemon/swap.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/daemon/swap.c b/daemon/swap.c
index 028bc1ee2..fea4a9dcf 100644
--- a/daemon/swap.c
+++ b/daemon/swap.c
@@ -22,6 +22,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <assert.h>
#include "guestfs_protocol.h"
#include "daemon.h"
@@ -58,6 +59,7 @@ do_mkswap (const char *device, const char *label, const char *uuid)
ADD_ARG (argv, i, "-f");
if (optargs_bitmask & GUESTFS_MKSWAP_LABEL_BITMASK) {
+ assert (label != NULL); /* suppress a warning with -O3 */
if (strlen (label) > SWAP_LABEL_MAX) {
reply_with_error ("%s: Linux swap labels are limited to %d bytes",
label, SWAP_LABEL_MAX);
--
2.12.0