[Bug c++/84918] Better handling of "std::cout >> 42;"

[dmalcolm at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84918

--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #0)
[...]
> 
> Checking on godbolt.org:
> 
> #include <iostream>
> void test ()
> {
>     std::cout >> 42;
> }
> 
> we currently spew dozens of lines of diagnostics.

For reference, trunk: 
  https://godbolt.org/z/d6xKGh5zY