[Bug tree-optimization/52560] if (r == -1) causes 'assuming signed overflow does not occur when simplifying conditional to constant'

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52560

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |msebor at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
6.0.0 20151111 doesn't issue any warnings on either the original translation
unit or the smaller test case in attachment 26877.  Since comment #3 indicates
the test case was buggy it doesn't seem like there's anything for us to do.

Resolving as Invalid.