gcov can't collect data when process is executed by systemctl start but it can when executed by ./process

[Xiaoli Feng <xifeng@xxxxxxxxxx>]

Hello,

  Sorry to noise you. But I don't know how to fixed  this issue. The gcov can
collect code coverage data if the process is executed in shell. But when
the process is start by systemd service. The *.gcda can't be generated. I google
many info. But there is no solution. So I only send mail to ask for your help.
  Does any one know what's happen? And where to find the gcov error message?
  If I send the wrong email address. Sorry about that.

-- 
Best regards!
XiaoLi Feng 冯小丽