[Bug c++/105222] gcc rejects valid syntax of ternary operator for lambda in requires clause

[hewillk at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105222

--- Comment #3 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to 康桓瑋 from comment #2)
> And gcc accepts the following invalid syntax:
> 
> int main() {
>   auto b = requires { true ? [] : [] {}; };
> }
> 
> https://godbolt.org/z/xeE1oYs1Y

It seems like the single [] makes gcc totally broken.

int main() {
  auto b = requires { true ? [] : []!-!-[]?[]; };
}

https://godbolt.org/z/EPTE6zf5E