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Re: new *z*printf-gnu modules
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From: |
Bruno Haible |
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Subject: |
Re: new *z*printf-gnu modules |
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Date: |
Wed, 26 Jun 2024 00:49:45 +0200 |
Hi Collin,
> Is the correct way to use them as Paul mentioned previously?
> Like this [1]:
>
>
> #undef printf
> #define printf zprintf
This is more hairy than you might think. Because of the GCC attribute syntax.
stdio.in.h does
/* Don't break __attribute__((format(printf,M,N))). */
# define printf __printf__
because there are not many symbols that can be used in place of 'printf'.
Do you have an idea for doing this nicely? Perhaps another kind of redirect?
A 'static inline' function would not be good, because it cannot be used
everywhere (ISO C 23 ยง 6.7.4.(3)). Maybe an 'extern inline'? Or can __asm__
based redirection made portable across all systems?
Bruno