Fix when call_user_func is invoked inside an internal function

[phalcon]

When the PHP userland function call_user_func is called inside an internal function/method, Xdebug cannot properly create the function name in xdebug_build_fname

[derickr]

Hi, I will check whether the code works in a bit, but in the meanwhile:

• Can you file a bug at http://bugs.xdebug.org — if it is not the same as http://bugs.xdebug.org/view.php?id=1073 (I have an inkling it is related)
• Add a test case, they're in .phpt format in the tests/ directory. Please name it according to the new bug number?
• Can you exclude whitespace changes from your patch?

[vladimmi]

Any progress on this? Should phalcon developers fix something or you can do it yourself? This is pretty annoying bug (leaving developers without debugger as server segfaults) and 15 days without any activity is not good...

[derickr]

I've asked the PR submitter to clean up his patch. I am waiting for that to happen.

[phalcon]

Sorry for the late reply, I've restored the whitespace and created a bug in Mantis. http://bugs.xdebug.org/view.php?id=1075

I'm not sure how I can add a test for this issue, since this only happens when call_user_func is called from an internal method (not from php userspace).

[derickr]

I've had a look, and I think that it is the same as http://bugs.xdebug.org/view.php?id=1073

The patch itself is not adequate for issue #1073 either, as it only allows for one level of call_user_func "inception". But I think that the I've just pushed a PR that makes both http://bugs.xdebug.org/view.php?id=1073 and http://bugs.xdebug.org/view.php?id=1075 go away.