[Bug c++/67445] New: New warning: returning std::initializer_list bound to temporary

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67445

            Bug ID: 67445
           Summary: New warning: returning std::initializer_list bound to
                    temporary
           Product: gcc
           Version: 4.9.4
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: enhancement
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---

It would be useful if -Wreturn-local-addr warned for the following:

std::initializer_list<int> f() {
  return { 1, 2, 3};
}

This creates a temporary array, then returns a std::initializer_list containing
a dangling pointer.