[Bug c++/42000] missing -Wuninitialized warning on a user-defined class ctor

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42000

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-02-07
     Ever confirmed|0                           |1

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
With the top of trunk (GCC 7) the test case in comment #0 isn't diagnosed with
-O2 or at any other optimization level.

I suspect this does fall under one of the existing -Wuninitialized bugs.  I'm
not sure bug 2972 covers this case.  Just quickly eyeballing the patch in bug
19808, I don't think it's meant to detect this problem either since it's
front-end only solution focused solely on dependencies between members in ctor
initializer lists.

I'll confirm this for now and if someone finds a pre-existing duplicate it can
be closed then.