[Bug other/53313] Add warning levels

[slyfox at inbox dot ru]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53313

Sergei Trofimovich <slyfox at inbox dot ru> changed:

           What    |Removed                     |Added
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                 CC|                            |slyfox at inbox dot ru

--- Comment #6 from Sergei Trofimovich <slyfox at inbox dot ru> ---
I was about to fill the bug about -Weverything to enable all the warnings
you have.

All those things I've got from 'gcc --help=warnings':
    -Wdelete-non-virtual-dtor
    -Wsuggest-attribute=noreturn
    -Wsuggest-attribute=format
    -Wredundant-decls
    ... (+around of 20 of this kind)

But I'd like to see them (and new cool ones!) just with gcc upgrade
and a run on -Weverything on a project (as I do with clang).

Thanks!