[Bug c++/70631] Warn about redundant comparisons with -Wlogical-op

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70631

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-03-17
                 CC|                            |msebor at gcc dot gnu.org
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=60759,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=69602,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=71472
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.  For a user's point of view I'd be inclined to view it as a bug
rather than an enhancement, but a review of the implementation suggests this
case just isn't handled.  I.e., the warning is working as intended and needs to
be enhanced to handle these expressions.

See also pr60759, pr69602, and pr71472 for other bugs/enhancements affecting
-Wlogical-op.