(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_OUT_Z_CAP

Macro that annotates function params with output string buffer size.

Header File

Defined in <SDL3/SDL_stdinc.h>

Syntax

#define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)

Remarks

If we were to annotate snprintf:

int snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, ...);

This notes that text is a null-terminated C string, should be maxlen 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.

Version

This macro is available since SDL 3.1.3.

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CategoryAPI, CategoryAPIMacro, CategoryStdinc

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