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Jonathan Wakely authored
As noted in the PR, we can use if-constexpr for the explicit instantantiation definitions that are compiled with -std=gnu++11. We just need to disable the -Wc++17-extensions diagnostics. libstdc++-v3/ChangeLog: PR libstdc++/113099 * include/bits/locale_classes.tcc (__try_use_facet): Use if-constexpr for C++11 and up.
Jonathan Wakely authoredAs noted in the PR, we can use if-constexpr for the explicit instantantiation definitions that are compiled with -std=gnu++11. We just need to disable the -Wc++17-extensions diagnostics. libstdc++-v3/ChangeLog: PR libstdc++/113099 * include/bits/locale_classes.tcc (__try_use_facet): Use if-constexpr for C++11 and up.