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

# SDL\_free\_func(3type)

A callback used to implement SDL\_free ().

## NAME

SDL\_free\_func - A callback used to implement  **SDL\_free** ().

## HEADER FILE

Defined in SDL3/SDL\_stdinc.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**typedef void (SDLCALL \*SDL\_free\_func)(void \*mem);**

## DESCRIPTION

SDL will always ensure that the passed **mem** is a non-NULL pointer.

## FUNCTION PARAMETERS

- *mem*

  a pointer to allocated memory.

## THREAD SAFETY

It should be safe to call this callback from any thread.

## AVAILABILITY

This datatype is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_free**(3)](/SDL_free/3.md), **•**(3), [**SDL\_GetOriginalMemoryFunctions**(3)](/SDL_GetOriginalMemoryFunctions/3.md), **•**(3), [**SDL\_GetMemoryFunctions**(3)](/SDL_GetMemoryFunctions/3.md), **•**(3), [**SDL\_SetMemoryFunctions**(3)](/SDL_SetMemoryFunctions/3.md)