Why the variable 'int unused1; ' not appear in the output of 'global -c' or 'global -cr'? But in the output of 'global -crs'?

[????]

Hi All,

I have a just one line .cpp, which only contains one line below:

int unused1;

I run 'gtags', and then try 'global -c' to get 'unused1'.

But it does not appear in neither 'global -c' nor 'global -cr', but only in the output of 'global -crs'?

Any suggest will be appreciate.

Regards,

Gavin Wong