Man page - sdl_null_while_loop_condition(3)

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Manual

SDL_NULL_WHILE_LOOP_CONDITION

NAME
HEADER FILE
SYNOPSIS
DESCRIPTION
AVAILABILITY

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NAME

SDL_NULL_WHILE_LOOP_CONDITION - A macro for wrapping code in do {} while (0); without compiler warnings.

HEADER FILE

Defined in SDL3/SDL_assert.h

SYNOPSIS

#include "SDL3/SDL.h"

#define SDL_NULL_WHILE_LOOP_CONDITION (0)

DESCRIPTION

Visual Studio with really aggressive warnings enabled needs this to avoid compiler complaints.

the do {} while (0); trick is useful for wrapping code in a macro that may or may not be a single statement, to avoid various C language accidents.

To use:

do { SomethingOnce(); } while (SDL_NULL_WHILE_LOOP_CONDITION (0));

AVAILABILITY

This macro is available since SDL 3.2.0.

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