The stub impl of virGetDeviceID just returns ENOSYS and does not initialize the min/maj output parameters. This lead to a false positive warning on mingw about possible use of uninitialized variables. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/util/virutil.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/util/virutil.c b/src/util/virutil.c index f77ee05dbf..ddd8805101 100644 --- a/src/util/virutil.c +++ b/src/util/virutil.c @@ -1407,9 +1407,10 @@ virGetDeviceID(const char *path, int *maj, int *min) #else int virGetDeviceID(const char *path G_GNUC_UNUSED, - int *maj G_GNUC_UNUSED, - int *min G_GNUC_UNUSED) + int *maj, + int *min) { + *maj = *min = 0; return -ENOSYS; } #endif -- 2.24.1