[Bug c++/68527] ICE with -fdump-ada-spec on invalid C++ 11 code

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68527

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
The dump-ada-spec-2.C had failed with my local change (C++ flexible arrays
change from 'array(0 .. -1)' to 'array(size_t)'; I expect the latter is more
correct).  While reproducing the failure, I used the option on the command
line.  Then, while reproducing another failure in nsdmi-union6.C, I
accidentally used the same option again and stumbled into the failure.