105   struct pad {  in test_partially_initialized()  struct
116   static_assert(sizeof(pad) == sizeof(no_pad));  in test_partially_initialized()
118   constexpr pad pir{4, 4};  in test_partially_initialized()
127   constexpr pad fine = bit_cast<pad>(no_pad{1, 2, 3, 4, 5});  in test_partially_initialized()
265   struct pad {  in test_indeterminate()  struct
276   pad p{1, 2};  in test_indeterminate()
359 struct pad {  struct
364 constexpr int ok_byte = (__builtin_bit_cast(std::byte[8], pad{1, 2}), 0);  argument
365 constexpr int ok_uchar = (__builtin_bit_cast(unsigned char[8], pad{1, 2}), 0);
373 constexpr int bad_my_byte = (__builtin_bit_cast(my_byte[8], pad{1, 2}), 0);
378 constexpr int bad_char =  (__builtin_bit_cast(char[8], pad{1, 2}), 0);
380 struct pad_buffer { unsigned char data[sizeof(pad)]; };
382   pad x = {1, 2};  in test_pad_buffer()
384   pad z = __builtin_bit_cast(pad, y);  in test_pad_buffer()