[Bug c++/77655] [6/7/8 Regression]ICE on invalid c++ code on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1plus))

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77655

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in trunk. I'm adding the testcase and removing the 8 Regression
marker.