[Bug libstdc++/87037] vector :: erase return value should be marked "must use"

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87037

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's nothing strange about that at all. There are plenty of uses for erase
where it's totally fine to ignore the return value.

auto iter = std::find(v.begin(), v.end(), val);
if (iter != v.end())
{
  do_something(*iter);
  v.erase(iter);
}

How do you propose to mark it so it only complains when you have a bug?