Dmitry

To be honest, the hardest part of implementing this feature is determining a good trait for what is and isn't an optional. I.e. is checking that the type is `std::optional`...

Yeah, could work

Most likely before the next Boost release (December)

Libc++ does this

https://github.com/llvm-mirror/libcxx/blob/master/include/vector#L1921 I don't think this overload is super useful, but if we provide it, why not make it a bit better? One particular example when this overload might become useful...

I've investigated the errors and as far as I can see, the static analyzer GCC uses when lto is enabled is kind of faulty. If the library is built in...

I'm not sure it's actually doable. The warning is emitted by the linker and it seems LTO "objects" don't store pragma information, so disabling this warning with a pragma doesn't...

Would this do the trick? ```c++ parser p; error_code ec; std::size_t consumed = 0; while (!ec && has_input()) { consumed += p.write_some(next_input(), ec); } if (ec) { std::cerr

My testing shows that for these test numbers the error is within 1 ULP

The imprecision is one bit. We currently don't have immediate plans for "extra precise" mode.