Per our policy we only support the last two releases. Reviewed By: #libc, EricWF, philnik Differential Revision: https://reviews.llvm.org/D148359
Concepts should be supported by all supported compilers. This is probably a left over from an older version of the expected patch. Reviewed By: #libc, philnik Differential Revision: https://reviews.llvm.org/D140632
std::expected
Implement `std::expected` https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p0323r12.html Added tests Differential Revision: https://reviews.llvm.org/D124516 address comment