"Uninitialized array" warnings by c++ with -O2

[Jakub Jelinek]

On Wed, Jun 07, 2017 at 12:15:54PM +0300, Kirill Yu Berezin wrote:
> Hello!
> 
> I have a code snippet (actually it is a part of larger project):

That snippet invokes undefined behavior at runtime (violates C++ aliasing rules),
so just fix it, rather than bother with bugreports.  E.g. look for -fstrict-aliasing
in GCC documentation, or read the C++ standard.  With -fno-strict-aliasing,
which is a workaround for broken code you won't get any warnings about
uninitialized uses.

	Jakub