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lang-c
uint32_tfor a bit-filed with a specified type ofuint8_t. Can you provide a quote from the Standard that states that the fourth member (in OP's first snippet) must be in a separate storage unit?_Bool,signed int, andunsigned intas bit-field types, then adds at the endor some other implementation-defined type(6.7.2.1 Structure and union specifiers). While for the first three, with some hesitation, comes obvious that the single bitfields can be packed in the same storage, this doesn't sound so 'natural' when the types are different. I'll fix my comments above.