[Bug c++/87404] New: Implement -Wenum-compare and -Wenum-compare-switch

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87404

            Bug ID: 87404
           Summary: Implement -Wenum-compare and -Wenum-compare-switch
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
            Blocks: 87403
  Target Milestone: ---

As I wrote to Martin Jambor privately, the warning found a real issue:

/home/marxin/Programming/gcc/gcc/omp-grid.c:1063:15:Semantic Issue: comparison
of two values with different enumeration types in switch statement ('enum
tree_code' and 'omp_clause_code'): -Wenum-compare-switch


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] Issues that suggest a new warning