https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93060
Bug ID: 93060 Summary: __uint128_t is not an std::integral/std::unsigned_integral Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: euloanty at live dot com Target Milestone: --- Host: GCC 10 https://en.cppreference.com/w/cpp/types/is_integral <source>:5:20: error: static assertion failed 5 | static_assert(std::unsigned_integral<__uint128_t>); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <source>:5:20: note: constraints not satisfied The cppreference said, "or any implementation-defined extended integer types". Checks whether T is an integral type. Provides the member constant value which is equal to true, if T is the type bool, char, char8_t, char16_t, char32_t, wchar_t, short, int, long, long long, or any implementation-defined extended integer types, including any signed, unsigned, and cv-qualified variants. Otherwise, value is equal to false. https://godbolt.org/z/vm68cj