[Bug c/89888] [7/8/9 Regression] When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89888

Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |7.5
            Summary|When switch controlling     |[7/8/9 Regression] When
                   |expression is promoted from |switch controlling
                   |type narrower than int, GCC |expression is promoted from
                   |does not diagnose identical |type narrower than int, GCC
                   |cases                       |does not diagnose identical
                   |                            |cases

--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
This is a regression introduced in 4.0 relative to 3.4.