Provided by: libsdl3-doc_3.2.26+ds-2_all 

NAME
SDL_SetAssertionHandler - Set an application-defined assertion handler.
SYNOPSIS
#include <SDL3/SDL_assert.h>
void SDL_SetAssertionHandler(
SDL_AssertionHandler handler,
void *userdata);
DESCRIPTION
This function allows an application to show its own assertion UI and/or force the response to an
assertion failure. If the application doesn't provide this, SDL will try to do the right thing, popping
up a system-specific GUI dialog, and probably minimizing any fullscreen windows.
This callback may fire from any thread, but it runs wrapped in a mutex, so it will only fire from one
thread at a time.
This callback is NOT reset to SDL's internal handler upon SDL_Quit()!
FUNCTION PARAMETERS
handler
the SDL_AssertionHandler function to call when an assertion fails or NULL for the default handler.
userdata
a pointer that is passed to handler.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
SDL_GetAssertionHandler(3)
Simple Directmedia Layer SDL 3.2.26 SDL_SetAssertionHandler(3)