Bug #78717 [Com]: pcntl_waitpid does not return process PID on child exit

Edit report at https://bugs.php.net/bug.php?id=78717&edit=1 ID: 78717 Comment by: simon at podlipsky dot net Reported by: simon at podlipsky dot net Summary: pcntl_waitpid does not return process PID on child exit Status: Open Type: Bug Package: PCNTL related Operating System: MacOS Catalina PHP Version: 7.3.10 Block user comment: N Private report: N New Comment: I has something to do with grpc extension. pecl install grpc should enable the bug Previous Comments: ------------------------------------------------------------------------ [2019-10-22 10:50:51] simon at podlipsky dot net Tried on another macos catalina and it works there. Not sure what might be wrong on my side though. Trying to investigate. ------------------------------------------------------------------------ [2019-10-22 09:48:10] simon at podlipsky dot net I forgot to specify, sorry. We tested on linux 7.3.10 and it went smoothly. Trying to find another mac with 7.3 installed ------------------------------------------------------------------------ [2019-10-22 09:46:08] nikic@php.net Works for me on Linux, likely MacOS specific. ------------------------------------------------------------------------ [2019-10-22 09:36:30] simon at podlipsky dot net Description: ------------ pcntl_waitpid() always returns 0 on php 7.3 but on 7.2 it returns PID of exited child. Example call: $pid = pcntl_waitpid($procData['pid'], $status, WNOHANG); This is script linked below output on php 7.2.23: ``` /usr/local/Cellar/php@7.2/7.2.23/bin/php script.php Exiting child 0 unset child 0 ``` This is the output on php 7.3.10: ``` /usr/local/Cellar/php/7.3.10/bin/php script.php Exiting child 0 ``` On PHP 7.3 the script never ends and is stuck in infinite while loop because if ($res === $procData['pid']) expects PID to be assigned in $res on child exit but that never happens. Test script: --------------- https://gist.github.com/simPod/5a177947bdf864026bfc59d71d6e9d71 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78717&edit=1