When you say "tracing", what exactly do you mean? Can you elaborate a bit more please?

I mean something like this:
function test() {
return;
}
xdebug_start_trace();
test(); // when returning null
xdebug_stop_trace();

and
xdebug.collect_return=1
in xdebug.ini
I think, xdebug trying collect return, but function returning "null", so xdebug crashing with error.

Hi

I was having some problems with phpmyadmin, and after different attempts, I found that if I changed xdebug.collect_return="1" to xdebug.collect_return="0", everything went back to normal.

The problem was that many links didn't work and the session restarted sometimes, but I couldn't find any log that helped from mysql or phpmyadmin.

I'm posting the link to the thread since I explained the problem quite detailed there.

In any case, I'll post my system specs here:

• xdebug 2.2.3
• apache 2.2.25
• php 5.5.7
• mariadb 5.5.32
• mysql 5.1.70 and 5.5.32
• mysql-workbench 5.2.47
• system: Linux patito 3.10.7-gentoo 0000007 SMP Sun Sep 29 10:24:32 MYT 2013 x86_64 Intel(R) Core(TM) i5-3330 CPU @ 3.00GHz GenuineIntel GNU/Linux

I'm also uploading my xdebug.ini for reference.

stackoverflow question
https://stackoverflow.com/questions/21482099/problems-with-database-links-on-phpmyadmin-interfaceI

I can confirm this bug.

After upgrading to Ubuntu 14.04, I had to turn off the xdebug.collect_return or my Apache would always segfault.
My system only has packages from standard repository.

Specs:

• Ubuntu 14.04 (Both server and desktop)
• apache2 2.4.7-1ubuntu4.1
• php5 5.5.9+dfsg-1ubuntu4.3
• php5-xdebug 2.2.3-2build1
• Kernel: Linux 3.13.0-30-generic 0000054-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Is this still an issue with Xdebug 2.2.5 and the other latest versions?

I can´t test that right now since I´m traveling, but in 3 weeks I can do it and report back.

I could confirm the bug on 2.2.5 (segfault), but on 2.2.6 it has been fixed and "collect_return" acts normally as it should.

I'm expecting this one to be fixed. Please reopen this issue if you can reproduce this with the latest versions of Xdebug and PHP.