https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80409
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- On Wed, 12 Apr 2017, pascal_cuoq at hotmail dot com wrote: > Since the open-source world divides the C compilation platform described by > the > C standard into C compilers (Clang, GCC) and standard libraries (Glibc, musl, > ...), with the implementation of varargs on the compiler side and the > implementation of scanf on the standard library side, it would make sense to > document that on target platforms where the representation of pointers is > uniform, the compilers allow va_arg(ap, void*) to consume any pointer > argument. Note that this is documented in POSIX (XSI-shaded, in the specification of stdarg.h).
