C99

[ghost]

How about to explicitly set C standard to at least C99 ?

Because, for example buffer.c uses vsnprintf(), va_copy().
The function and macro conform to ISO/IEC 9899:1999 ("ISO C99").

see: http://en.cppreference.com/w/c/io/vfprintf
and http://en.cppreference.com/w/c/variadic/va_copy

[faelys]

I don't understand exactly what you are suggesting.

My code does follow C99 standard, chosen mostly because of the significant improvements over C89 (like va_copy or fixed-size integers) while the newer standard didn't exist yet.

But what do you mean by "explicitly set[ting] C standard"?

[ghost]

Sorry for not being clear.
I am just suggesting to add -std=c99 option to CFLAGS in *makefiles.

[ghost]

...and GCC 4.X.X uses by default gnu90 + some C99 features,
but 5.X.X and Clang use gnu11 by default.

It compiles fine with GCC 4.X.X, so it is just to be more clear with this version. )

[ghost]

merci