[Bug c++/85046] [8/9/10 Regression] cp/name-lookup.c:6175:53: runtime error: member access within null pointer of type 'struct cp_binding_level'

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85046

--- Comment #8 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
the reduced testcases no longer crash the compiler.  The first emits a correct
error, the second succeeds.

The original testcase still crashes the compiler, after emitting a slew of
errors about ill-formed code.