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struct EmptyA{};
struct EmptyB{};
struct NonEmpty{
int field;
};
#if defined(_MSC_VER)
# define MOZ_EMPTY_BASES __declspec(empty_bases)
#else
# define MOZ_EMPTY_BASES
#endif
struct MOZ_EMPTY_BASES Some : EmptyA, EmptyB {}; // no-error
struct Some0 : EmptyA, EmptyB {}; // expected-error {{Missing MOZ_EMPTY_BASES}}
struct Some1 : EmptyA, NonEmpty {}; // no-error
struct Some2 : EmptyA, EmptyB, NonEmpty {}; // expected-error {{Missing MOZ_EMPTY_BASES}}