How can I debug a segmentation fault when running php script with hhvm? When I run it, I get:
Core dumped: Segmentation fault
Segmentation fault
In stacktrace I get that it error when I call a method of the same object.
Is there any code analyzer that might tell me wrong php code or somehow to get more verbose on errors or stack trace?
When I use
$r = mysql_query($sql, $link); //crashes
$r = mysql_query($sql); //does not crash
To get a better understanding of the crash, you need to build HHVM for debug.
This can be done by adding -DCMAKE_BUILD_TYPE=Debug to your cmake.
More info can be found here: https://github.com/facebook/hhvm/wiki/Reporting-Crashes
You may also find a trace named stacktrace.[number].log in the /tmp directory.
If after inspecting the stack trace you realise that the bug is not on your side, it is best to submit a new issue here: https://github.com/facebook/hhvm/issues
Once the issue is not a seg fault, you can get more out of your logging.