https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90758

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |10.0, 8.2.0, 9.1.0
           Keywords|                            |diagnostic
   Last reconfirmed|                            |2019-06-05
          Component|c                           |tree-optimization
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|out of bounds warning with  |[7 Regression] spurious
                   |-O3                         |-Warray-bounds with -O3
      Known to fail|                            |4.8.1, 4.9.4, 5.5.0, 6.4.0,
                   |                            |7.3.0

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm the warning.  I didn't spend enough time on it to say
definitively that it's a false positive so I'm going to take your word for it.

The warning was introduced in 4.8 via r192538 and fixed in 8.1 via r257184. 
The second commit is for PR 81360 which was an ICE, so that it suppressed the
warning could be entirely incidental.

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