Reproduce case:

git clone git@github.com:majkel89/dbase.git
cd dbase
git checkout 735f7862f03d9a3a8a0480ae6432a210692166ba
composer install -o
./vendor/bin/phpunit

ashgenesis, I can reproduce this problem. But there are many many tests, that are just in the way. Can you help trying to figure out which one causes it? It would be great, if you could do this on the shell first before you try:

export USE_ZEND_ALLOC=0

derick I have found that this is the test which fail

File tests/unit/FormatTest.php
Class FormatTest method testInsertTransaction ligne 867

public function testInsertTransaction() {
    $format = $this->getFormatMock()
        ->getHeader(new Header())
        ->writeHeader(array(), self::never())
        ->serializeRecord()
        ->getFile($this->getFileMock()->new())
        ->new();
    $this->reflect($format)->transaction = true;
    $format->insert(new Record());
}

Yeah, that seems to be the one. I think I know why it happens too. It has to do with the mock and its use of __call.

Think I have this cracked, can you check the following branch to confirm?

https://github.com/derickr/xdebug/tree/issue1331-code-coverage-segfault

derick I tried you branch and it seem fixing the segfault

./vendor/bin/phpunit tags/v1.0.0~10
PHPUnit 4.7.7 by Sebastian Bergmann and contributors.

Runtime: PHP 7.0.10-1+deb.sury.org~trusty+1 with Xdebug 2.4.1-dev
Configuration: /var/www/dev/dbase/phpunit.xml

............................................................... 63 / 318 ( 19%)
............................................................... 126 / 318 ( 39%)
............................................................... 189 / 318 ( 59%)
............................................................... 252 / 318 ( 79%)
............................................................... 315 / 318 ( 99%)
...

Time: 8.61 seconds, Memory: 14.00MB

OK (318 tests, 611 assertions)

Generating code coverage report in HTML format ... done

No more segfault with your branch.

Thanks