[Bug c++/70538] deprecated "access declaration" evokes gcc_unreachable ICE

[jim at meyering dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70538

--- Comment #1 from jim at meyering dot net ---
FYI, that same ICE strikes also with gcc-4.9.3, gcc-5.1.0 and gcc-5.3.0 when
using -std=c++11