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Subject: Re: variadic args (was: [musl] compiling musl on x86_64 linux
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Date: Thu, 28 Aug 2014 18:55:07 +0200
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To: Rich Felker <dalias@libc.org>
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On Thu, Aug 28, 2014 at 10:40:32AM -0400, Rich Felker wrote:
> compiler-provided stdarg.h from every possible compiler.
> 
> Note that this is actually complex in practice (there are lots of
> variants!) while the __builtin_va_* stuff is not complex in practice
> (tcc is the only example anyone's given where the uniform
> __builtin_va_* stuff doesn't work).

Indeed, you actually convinced me that e.g. fulfilling the symbol
visibility constraints (to be fully standard compliant) is not easily
provided with a "simplistic" approach.

So, reasoning in the practical terms, the reliance on builtins is the
best fit for efficient and consistent musl development.

I am otherwise satisfied with workarounds (working and good enough
for my practical needs - the applications usually disregard a lot more
standards than my setup :) for the sometimes "weird" compilers I happen
to deal with, so this issue is in no way a showstopper here.

Thanks for your time in the discussion Rich.

Best regards,
Rune