Hi, On Wed, Apr 23, 2025 at 01:08:00PM +0200, THIBAUT AUBIN wrote: > Regarding <stdarg.h> in "util.h", this was omitted in accordance to ISO/IEC > 9899:1999 (C99) ยง7.19.6.8. > A conforming C library must provide the v-printf family (e.g: `vfprintf`, > `vprintf`, `vsprintf`, `vsnprintf` in <stdio.h>, so on most platforms > <stdio.h> ends up including <stdarg.h> (or otherwise `va_list`).
There are two different things. One is providing the function definition and other is the va_arg type definition. In fact, The C standard explicitely forbids including one standard header in other header, and it explicitely what every header exposes. For example, in musl (and something similar in scc): int vfprintf(FILE *__restrict, const char *__restrict, __isoc_va_list); because stdio.h cannot expose va_list, but it has to expose vfprintf (for example to use it as a function pointer). Regards,
