On Tue, Jan 28, 2020 at 5:29 PM Benjamin Morel <benjamin.mo...@gmail.com> wrote:
> Hi internals, > > I'm encountering a SIGSEGV in PHP-FPM on PHP 7.4.2 in a Symfony app. The > bug seems to happen during the rendering of a Twig template; this makes it > hard for me to pinpoint the code that triggers the segfault. > > Could you please tell me what the procedure to collect information is, so > that I can file a useful bug report? > As the first step, I would always suggest to reproduce this issue with the CLI binary (this includes the builtin server under -S localhost:8000 -t public). That way you don't have to deal with multi-process FPM. Once that is done, the easiest way to get some useful debugging information is to run PHP under valgrind, this is done using "USE_ZEND_ALLOC=0 valgrind php ...". Nikita
