Is it common for bitflags in C to define multiple flags with the same index type. Looking at an enum representation which has two entries with the same bitflag entry. Eep.pic.twitter.com/h3tPtNJzyB
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Or does this just mean that they're just aliases for the same setting, and putting them in the same memory location is a clever hack to enable that?
I think they're not aliases (they could be) but they're mutually exclusive and the interpretation is context-dependent.
Yup, this ^^^ – FLAG_ACK is for SETTINGS frames, END_STREAM for DATA frames, according to https://http2.github.io/http2-spec/ . And yes, it’s not that uncommon to have overlapping or identical values in bitset enums in C, when it makes sense.
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