[Bug gcov-profile/90438] [GCOV] switch statement is not instrumented when "case" body is empty and only "default" body with statements

[yangyibiao at nju dot edu.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90438

--- Comment #2 from Yibiao Yang <yangyibiao at nju dot edu.cn> ---
(In reply to Martin Liška from comment #1)
> It's again the same story. As I've already explained you multiple times,
> compiler optimizes a dead code even without any optimization level. Thus we
> 
> Please do not create such bugs.

Very sorry for the same bug report. Will avoid in the future. 

Thank you very much for the detailed explaination.