Some compilers do not manage to figure out that the members of it are set only when search_appliance() in the end returns 1, which is already checked. Help them a bit by resetting the appliance_files struct on our own, so they will not report that 'appliance.kernel', and the others are used as uninitialized. --- lib/appliance.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/appliance.c b/lib/appliance.c index 360d4105f..0fa37339e 100644 --- a/lib/appliance.c +++ b/lib/appliance.c @@ -118,6 +118,8 @@ guestfs_int_build_appliance (guestfs_h *g, struct appliance_files appliance; + memset (&appliance, 0, sizeof appliance); + if (search_appliance (g, &appliance) != 1) return -1;