[Bug c++/118631] New: Public class member as const reference to protected member

[info--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118631

            Bug ID: 118631
           Summary: Public class member as const reference to protected
                    member
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: i...@joerg-brueggmann.de
  Target Milestone: ---

Created attachment 60253
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60253&action=edit
cpp-file as self contained bug report

Dear all, 

in the public member 'msets' is a const reference to the protected member
'msets_'.

class StringSet {
   ...
public:
    const std::set< std::string >&  msets;
protected:
    std::set< std::string >         msets_;

It was assumed that both members 'msets' and 'msets_' will ALWAYS represent the
same content. But it seems that I created some code where this it is not the
case.

Please, find the details in the attachment.


Thank you.


Best regards

Jörg Brüggmann