debian man page for register_assert_handler

register_assert_handler(3alleg4)				  Allegro manual				  register_assert_handler(3alleg4)

NAME
       register_assert_handler - Registers a custom handler for assert failures. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void register_assert_handler(int (*handler)(const char *msg));

DESCRIPTION
       Supplies  a  custom handler function for dealing with assert failures. Your callback will be passed a formatted error message in ASCII, and
       should return non-zero if it has processed the error, or zero to continue with the default actions. You could use  this	to  ignore  assert
       failures,  or  to  display  the error messages on a graphics mode screen without aborting the program. You can call this function even when
       Allegro has not been initialised. Example:

	  int show_but_continue(const char *text)
	  {
	      alert("Uh oh...", "Fasten your seat belts.", text,
		    "&Go on!", NULL, 'g', 0);
	      return 1;
	  }
	  ...
	     register_assert(show_but_continue);
	     ASSERT(0); /* This won't crash the program now. */

SEE ALSO
       al_assert(3alleg4), ASSERT(3alleg4), register_trace_handler(3alleg4)

Allegro 							   version 4.4.2				  register_assert_handler(3alleg4)