Re: [libvirt] [PATCH v2 14/42] m4: enforce that all enum cases are listed in switch statements

As a general rule any time we switch() on something that is an enum, we want to have a case for every enum constant. The -Wswitch warning will report any switch where we've violated this rule, except if that switch has a default case. Unfortunately it is reasonable to want to list all enum constants *and* also have a default case. To get a warning in that scenario requires that we turn on -Wswitch-enum. In a few cases where we explicitly don't want to list all enum cases, we can discard the enum type checking by casting the value to a plain int. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- m4/virt-compile-warnings.m4 | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)