c++ Unused variable

[agoswami]

Hi,
I am working in large code base in c++(may be 8 million code). In My application I have seen thousands of unused variable and reported by g++ compiler but till now we did not clean up.I want to take intiative for cleaning
this varible but I need some info before working this issue.

Could anyone provide me info what will be the issue/disadvantage if we have thousands of unused variable. I searched into google but did not find any info.


I also seen into complier that they ignore warning but I believe we should treat warning as error. if possible could anyone provide me info what could be disaster if we ignore warning

What do you think guys we should effort to rectify this problem or it just
of waist effort

[writetonsharma]

duplicate.