suppress dangling-reference compiler warnings if using g++ 13 (for FTBFS gcc-13) #30
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GCC 13 では
-Wall
(gcc 13.1) または-Wextra
(gcc 13.2 以降) に含まれる-Wdangling-reference
で警告が出るようになり、 yugawara はコンパイルオプション-Werror
も指定しているためこれが原因でビルドが通らなくなりました。エラーが出たコード (takatori の util コード) を調べると、
std::span
-like class に対する誤検出として有名なパターンに該当しているようです。このタイプの誤検出は GCC 14 では改善され、警告を出さないようにされています。
よって GCC 13 系列に限り、コンパイルオプション
-Wno-dangling-reference
で警告抑止するようにします。