-Wunused-but-set-variable warnings

Thiago Macieira thiago at kde.org
Tue Jul 5 14:46:04 BST 2011

Em Monday, 4 de July de 2011, às 12:02:47, Dawit A escreveu:
> Unlike the -Wunused-parameter fixing this warning messages requires
> context because the variable may be set and unused due to a mistake
> that can potentially be causing a bug. As such can kdelibs cmake file
> be changed to error out, -Werror=unused-but-set-variable, for such
> warnings ?

Don't forget the case where the variable is set as a result of a function call 
that has side-effects. If that's the case, you may remove the variable, but you 
cannot remove the function call.

We caused a couple of regressions in Qt due to this mistake.

Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
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