Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_NULL_WHILE_LOOP_CONDITION - A macro for wrapping code in do {} while (0); without compiler warnings.
SYNOPSIS
#include <SDL3/SDL_assert.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.
Simple Directmedia Layer SDL 3.2.20 SDL_NULL_WHILE_LOOP_CONDITION(3)