[Bug tree-optimization/99756] bogus -Wmaybe-uninitialized with a use conditional that's a subset of a defining conditional

[msebor at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99756

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
         Depends on|                            |99755
             Blocks|                            |24639
      Known to fail|                            |10.2.0, 11.0, 4.1.0, 4.8.4,
                   |                            |4.9.4, 5.5.0, 6.4.0, 7.2.0,
                   |                            |8.3.0, 9.1.0

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The spurious warning goes as far back as GCC 4.1.  It can be avoided either by
improving the optimization or by changing tree-ssa-uninit.c.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99755
[Bug 99755] failure to fold a conditional that's a subset of another expression