Can you provide a self-contained example so that I can (try to) reproduce this?

Minimal self-contained example:

function testFoo($bar)
{
throw new \Exception();
}

try {
testFoo('foobar');
} catch (Exception $exception) {
var_dump($exception);
}

This can be also reproduced in the web context.

That outputs:

derick@singlemalt:~$ php -dxdebug.var_display_max_depth=6 /tmp/goo.php

/tmp/goo.php:10:

class Exception#1 (8) {

protected $message =>

string(0) ""

private $string =>

string(0) ""

protected $code =>

int(0)

protected $file =>

string(12) "/tmp/goo.php"

protected $line =>

int(4)

private $trace =>

array(1) {

[0] =>

array(4) {

'file' =>

string(12) "/tmp/goo.php"

'line' =>

int(8)

'function' =>

string(7) "testFoo"

'args' =>

array(1) {

[0] =>

string(6) "foobar"

}

}

}

private $previous =>

NULL

public $xdebug_message =>

string(170) "

Exception:  in /tmp/goo.php on line 4

Call Stack:

0.0006     384360   1. {main}() /tmp/goo.php:0

0.0006     384360   2. testFoo($bar = 'foobar') /tmp/goo.php:8

"

}

Which looks correct to me?

Sorry for the false issue (this is not related to Xdebug after all), further debugging showed that this was due to the new zend.exception_ignore_args INI directive which was added in PHP 7.4 : https://www.php.net/manual/en/migration74.other-changes.php

OK. Thanks for checking! I'll make sure to add a test so this won't get lost.

Closing this out - thanks for telling me what went wrong :-)