[PATCH v4 19/22] tests/qtest: add assert to catch bad features

[Alex Bennée]

No device driver (which is what the qvirtio_ access functions
represent) should be setting UNUSED(30) in the feature space. Although
existing libqos users mask it out lets ensure nothing sneaks through.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 tests/qtest/libqos/virtio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/qtest/libqos/virtio.c b/tests/qtest/libqos/virtio.c
index 09ec09b655..03056e5187 100644
--- a/tests/qtest/libqos/virtio.c
+++ b/tests/qtest/libqos/virtio.c
@@ -101,6 +101,8 @@ uint64_t qvirtio_get_features(QVirtioDevice *d)
 
 void qvirtio_set_features(QVirtioDevice *d, uint64_t features)
 {
+    g_assert(!(features & QVIRTIO_F_BAD_FEATURE));
+
     d->features = features;
     d->bus->set_features(d, features);
 
-- 
2.30.2