fatal with to without trace ?

gistfile1.php

<?php


function will_fatal()
{
    a();
}

function a()
{
    b();
}

function b()
{
    c();
}

function c()
{
    debug_print_backtrace(); // Here everything ok
    /*
        #0  c() called at [/test.php:16]
        #1  b() called at [/test.php:11]
        #2  a() called at [/test.php:6]
        #3  will_fatal() called at [/test.php:45]
    */
    d();
}


function handle_fatal_errors()
{
    debug_print_backtrace(); // here I won't have the full trace

    /*
        --- WITHOUT XDEBUG ---
        Fatal error: Call to undefined function d() in /test.php on line 27
        #0  {closure}()

        --- WITH XDEBUG ---
        Fatal error: Call to undefined function d() in /test.php on line 28

        Call Stack:
            0.0002     231104   1. {main}() /test.php:0
            0.0003     231832   2. will_fatal() /test.php:45
            0.0003     231864   3. a() /test.php:6
            0.0003     231896   4. b() /test.php:11
            0.0003     231928   5. c() /test.php:16

        #0  {closure}()
    */
}


register_shutdown_function('handle_fatal_errors');


will_fatal();