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Comments on Should I cast to (void) when I do not use the return value
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I saw at least one compiler (Codewarrior for HC12) warn me if I use a function without using it's return value. [...]
Ye, for that's the right choice.
[...] Other compilers (clang/gcc) do not issue a warning though, even when using the std=90 argument.
It will, provided that the function is correctly marked warn_unused_result (https://gcc.gnu.org/onlinedocs/gcc-4.6.0/gcc/Warning-Options.html). The software is should be edited as making results use mandatory. Else functions are to return void.
So should I generally cast the unused return value of a function to (void)?
Never. The returned value is always meaningful and has always to be treated.
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