On Thu, 20 Feb 2025 at 16:59, Thomas Schwinge <tschwi...@baylibre.com> wrote:
>
> In a newlib configuration:
>
> ../../../../../source-gcc/libstdc++-v3/src/c++20/format.cc: In member
> function ‘std::codecvt_base::result
> std::__format::{anonymous}::__encoding::conv(std::string_view, std::string&)
> const’:
> ../../../../../source-gcc/libstdc++-v3/src/c++20/format.cc:100:35: error:
> unused parameter ‘out’ [-Werror=unused-parameter]
> 100 | conv(string_view input, string& out) const
> | ~~~~~~~~^~~
>
> libstdc++-v3/
> * src/c++20/format.cc (conv): Tag 'out' as '[[maybe_unused]]'.
OK
> ---
> libstdc++-v3/src/c++20/format.cc | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libstdc++-v3/src/c++20/format.cc
> b/libstdc++-v3/src/c++20/format.cc
> index 1a24fcab7f7..6967d53259d 100644
> --- a/libstdc++-v3/src/c++20/format.cc
> +++ b/libstdc++-v3/src/c++20/format.cc
> @@ -97,7 +97,7 @@ struct __encoding : locale::facet
>
> // Convert `input` to UTF-8, using `out` to hold the result.
> codecvt_base::result
> - conv(string_view input, string& out) const
> + conv(string_view input, [[maybe_unused]] string& out) const
> {
> if (input.empty()) [[unlikely]]
> return codecvt_base::noconv;
> --
> 2.34.1
>
