[Bug c++/104765] Expression statement with a return in a lambda-parameter-default causes segfault when called in a different function

[aaron at aaronballman dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104765

--- Comment #6 from Aaron Ballman <aaron at aaronballman dot com> ---
(In reply to Marek Polacek from comment #4)
> My preference: prohibit any use of ({}) in default arguments.

That's my preference as well assuming it doesn't break a significant amount of
code (which I have no reason to believe it will).