Hey
I've just run into a strange build issue when I was tinkering with clang's -Weverything build option.
Specifically, it's complaining about _XOPEN_SOURCE, _LARGEFILE_SOURCE and _FILE_OFFSET_BITS in lprefix.h being reserved identifiers.
It seems like in section 7.1.3 of C99, any identifier in any scope, which begins with an underscore and a capital letter, is reserved.
Is Lua intending to be C99 compliant?
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