[Bug c++/67559] [C++] [regression] Passing non-trivially copyable objects through '...' doesn't generate warning or error

[bisqwit at iki dot fi]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67559

--- Comment #2 from Joel Yliluoma <bisqwit at iki dot fi> ---
But when compiling for earlier standard versions that explicitly label this as
undefined behavior, it should at least give a warning.