[Bug c++/71511] [6/7 Regression] ICE on valid C++11 code (with decltype) on x86_64-linux-gnu: in cxx_incomplete_type_diagnostic, at cp/typeck2.c:567

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71511

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Ah, that's just the gnu++14 change.