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include/hw/qdev-core: Detect most empty Property lists at compile time

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Add a macro expansion of device_class_set_props which can check
on the type and size of PROPS before calling the function.

Avoid the macro in migration.c because migration_properties
is defined externally with indeterminate size.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Link: https://lore.kernel.org/r/20241218134251.4724-13-richard.henderson@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Richard Henderson 2024-12-18 07:42:39 -06:00 • committed by Paolo Bonzini
parent 2885bf891a
commit 588611972f
3 changed files with 19 additions and 2 deletions
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2
hw/core/qdev-properties.c
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@ -1061,7 +1061,7 @@ static void qdev_class_add_legacy_property(DeviceClass *dc, const Property *prop
NULL, NULL, (Property *)prop);
}
void device_class_set_props(DeviceClass *dc, const Property *props)
void (device_class_set_props)(DeviceClass *dc, const Property *props)
{
const Property *prop;