On Fri, 31 Aug 2018, Martin Jambor wrote:
> diff --git a/gcc/common.opt b/gcc/common.opt
> index ebc3ef43ce2..2950760fb2a 100644
> --- a/gcc/common.opt
> +++ b/gcc/common.opt
> @@ -815,6 +815,10 @@ Wvector-operation-performance
> Common Var(warn_vector_operation_performance) Warning
> Warn when a vector operation is compiled outside the SIMD.
>
> +Wabsolute-value
> +Common Var(warn_absolute_value) Warning EnabledBy(Wextra)
> +Warn on suspicious calls of standard functions computing absolute values.
If it's C-specific I'd expect it to be in c.opt (in the appropriate
alphabetical position) and have "C ObjC" instead of Common.
> +@item -Wabsolute-value
> +@opindex Wabsolute-value
> +@opindex Wno-absolute-value
> +Warn when a wrong absolute value function seems to be used or when it
> +does not have any effect because its argument is an unsigned type.
> +This warning is specific to C language and can be suppressed with an
> +explicit type cast. This warning is also enabled by @option{-Wextra}.
And then the @item would have @r{(C and Objective-C only)}, similar to
other such options (rather than saying "specific to C language" in the
text).
--
Joseph S. Myers
jos...@codesourcery.com
