[Bug c/85563] [8 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85563

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |7.3.0
           Keywords|                            |diagnostic
   Last reconfirmed|                            |2018-04-30
                 CC|                            |egallager at gcc dot gnu.org
             Blocks|                            |24639
     Ever confirmed|0                           |1
            Summary|-Wmaybe-uninitialized false |[8 regression]
                   |alarm regression with       |-Wmaybe-uninitialized false
                   |__builtin_unreachable and   |alarm regression with
                   |GCC 8                       |__builtin_unreachable and
                   |                            |GCC 8
      Known to fail|                            |8.0.1

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
I had to add -m64 to my command line, but once I did that, I could successfully
reproduce the bug. Confirmed.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues