SDL_OUT_BYTECAP - Man Page

Defined in SDL3/SDL_stdinc.h

#include "SDL3/SDL.h"

#define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)

If we were to annotate memcpy :

void *memcpy(SDL_OUT_BYTECAP(bufsize) void *dst, const void *src, size_t bufsize);

This notes that dst should have a capacity of bufsize bytes in size, and is only written to by the function. The compiler or other analysis tools can warn when this doesn't appear to be the case.

On compilers without this annotation mechanism, this is defined to nothing.

This macro is available since SDL 3.2.0.