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We already enable this for -std=gnu++20 but we can do it for -std=c++20 too. Both libc++ and MSVC also treat this change as a DR for C++20. Now that the previous change to the value of __cpp_lib_format is supported, we can finally update it to 202304 to indicate support for this feature too. libstdc++-v3/ChangeLog: * include/bits/version.def (format): Update value for P2510R3. * include/bits/version.h: Regenerate. * include/std/format (_GLIBCXX_P2518R3): Remove misspelled macro and check __glibcxx_format instead. * testsuite/std/format/functions/format.cc: Check value of the __cpp_lib_format macro for formatting pointers support. * testsuite/std/format/parse_ctx.cc: Likewise.
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