Does GCC have __gnuc_literal_encoding__ macro defined?

[sotrdg sotrdg]

I just realized clang has this but clang does not support -fexec-charset.

Clang Language Extensions — Clang 13 documentation (llvm.org)<https://clang.llvm.org/docs/LanguageExtensions.html>


__clang_literal_encoding__
Defined to a narrow string literal that represents the current encoding of narrow string literals, e.g., "hello". This macro typically expands to “UTF-8” (but may change in the future if the -fexec-charset="Encoding-Name" option is implemented.)
__clang_wide_literal_encoding__
Defined to a narrow string literal that represents the current encoding of wide string literals, e.g., L"hello". This macro typically expands to “UTF-16” or “UTF-32” (but may change in the future if the -fwide-exec-charset="Encoding-Name" option is implemented.)


I think we probably need macros like
__gnuc_source_encoding__
__gnuc_literal_encoding__
__gnuc_wide_literal_encoding__
__gnuc_literal_encoding_is_ascii_based__
__gnuc_wide_literal_encoding_is_ascii_based__
In GCC

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