Really obscure C++ mangling error with -fnew-abi

[Martin v. Loewis]

> (2) Why is std::string showing up as std::string in some places and as
> "basic_string<char, std::char_traits<char>, std::allocator<char> >" in
> other places??

That is certainly a bug; it should be always mangled as Ss, and not as
SbIcSt11char_traitsIcESaIcEE.

Regards,
Martin