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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 is...
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#1: Initial revision
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2020-08-22T01:04:33Z (over 4 years ago)
> 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.