---
name: "SDL_NULL_WHILE_LOOP_CONDITION"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_NULL_WHILE_LOOP_CONDITION"
---

# SDL\_NULL\_WHILE\_LOOP\_CONDITION(3)

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

## 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.