error in ngx_http_php_zend_uthread_log_inline_routine

[xigaoli]

When I use the log_by_php directive, the ngx_http_php_zend_uthread_log_inline_routine is called 3 time for each web request, and one of them triggers segfault.
The PHP code are executed once though.

The block-version function (log_by_php_block) is not working but not quite sure about the reason. My guess is that at line 200 of /src/ngx_http_php_directive.c, there's a plcf->log_code = code; it could be plcf->log_inline_code = code.

My PHP version is 7.2, nginx version is 1.12.2.
Let me know if there's a solution to this.
Thanks in advance!