Re: [libvirt PATCH v2] src: workaround warning triggered in glib 2.69

Libvirt is using the G_GNUC_FALLTHROUGH macro provided by glib since version 2.60. Since we need to support older glib, we also have some compatibility code to define it if missing. We set the GLIB_VERSION_MAX_ALLOWED macro to ensure we get warnings when we use an API that dates from a glib version newer than our minimum benchmark. Historically this didn't get enforced for (most) macros, but GLib 2.69 has addressed that gap. This causes our usage of G_GNUC_FALLTHROUGH to trigger warnings. GLib is right to warn, because it does not know that we have added our own fallback for older versions. The only way to squelch this warning though, is to fully undefine the GLib provided G_GNUC_FALLTHROUGH and use our own in its place. We'll be able to remove all this compat burden when we finally update the min glib version to be >= 2.60 Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/internal.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)