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A comment on Some of the error messages produced by Apple's MPW C compiler (2006). Parent comment

Re:Some of the error messages produced by Apple's MPW C comp... by messe on Sunday August 27, 2023 @05:27PM (#37286789)
> Nitpick: this isn’t standard C (it uses void main, not int main)

You know what, I'm gonna nitpick that nitpick: void main() is fully allowed on a freestanding target, which is still standard C.

Given the C standards historically generous interpretation of undefined behaviour and other miscellany, I think it's a reasonable interpretation of the standard to pretend that a target that allows something other than int main(...) is freestanding rather than hosted, and therefore fully conforming.

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Re:Some of the error messages produced by Apple's MPW C comp... by mysterymath on Sunday August 27, 2023 @11:58PM (#37289569)
Yep, llvm-mos-sdk is explicitly freestanding; the libc functions in the SDK follow the hosted C standard, but they don't add up to a hosted implementation. The only known C99 non-compliance is the lack of floating point support, which is actively being worked on.
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