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Re: [avr-libc-dev] selective linking of floating point support for *prin
Re: [avr-libc-dev] selective linking of floating point support for *printf / *scanf
Wed, 3 Sep 2014 14:58:30 +0800
> From: Joseph S. Myers [mailto:address@hidden
> Sent: Tuesday, September 02, 2014 11:29 PM
> Identifiers beginning with a single underscore are reserved with file
> scope. This means an application cannot provide an external definition of
> them, because such an external definition would have file scope. So it's
> fine for the implementation to define such identifiers and use them in the
> implementation of standard functions.
Ah yes, I mistook file scope with file scope with internal linkage. So then
shouldn't be any problem since _printf_float and _scanf_float are only used
for external linkage, no macro refer to them.