###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!)
# SDL_GetAssertionHandler

Get the current assertion handler.

## Header File

Defined in [<SDL3/SDL_assert.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_assert.h)

## Syntax

```c
SDL_AssertionHandler SDL_GetAssertionHandler(void **puserdata);
```

## Function Parameters

|         |               |                                                                                                                              |
| ------- | ------------- | ---------------------------------------------------------------------------------------------------------------------------- |
| void ** | **puserdata** | pointer which is filled with the "userdata" pointer that was passed to [SDL_SetAssertionHandler](SDL_SetAssertionHandler)(). |

## Return Value

([SDL_AssertionHandler](SDL_AssertionHandler)) Returns the
[SDL_AssertionHandler](SDL_AssertionHandler) that is called when an assert
triggers.

## Remarks

This returns the function pointer that is called when an assertion is
triggered. This is either the value last passed to
[SDL_SetAssertionHandler](SDL_SetAssertionHandler)(), or if no
application-specified function is set, is equivalent to calling
[SDL_GetDefaultAssertionHandler](SDL_GetDefaultAssertionHandler)().

The parameter `puserdata` is a pointer to a void*, which will store the
"userdata" pointer that was passed to
[SDL_SetAssertionHandler](SDL_SetAssertionHandler)(). This value will
always be NULL for the default handler. If you don't care about this data,
it is safe to pass a NULL pointer to this function to ignore it.

## Thread Safety

It is safe to call this function from any thread.

## Version

This function is available since SDL 3.1.3.

## See Also

- [SDL_SetAssertionHandler](SDL_SetAssertionHandler)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryAssert](CategoryAssert)