Walter: > D already does this. > and this.
But not this: >New -Wunused-but-set-variable and -Wunused-but-set-parameter warnings were >added for C, C++, Objective-C and Objective-C++. These warnings diagnose >variables respective parameters which are only set in the code and never >otherwise used. Usually such variables are useless and often even the value >assigned to them is computed needlessly, sometimes expensively. The >-Wunused-but-set-variable warning is enabled by default by -Wall flag and >-Wunused-but-set-parameter by -Wall -Wextra flags.< Bye, bearophile
