Wuninitializable-member (PR7651 Define -Wextra strictly in terms of other warning flags)

["Manuel LÃpez-IbÃÃez" <lopezibanez at gmail dot com>]

:ADDPATCH c++:

This patch continues the effort to fix PR7651 [1].

A new option -Wuninitializable-member [*] takes over the warning for a
non-static reference or non-static const member appearing in a class
without constructor. The new option is enabled by -Wextra, so we keep
the current behaviour but add the ability to enable/disable this
individual warning.

Bootstrapped and regression tested with --enable-languages=all on
i686-pc-linux-gnu.

OK for mainline?

[1] http://gcc.gnu.org/ml/gcc-patches/2006-12/msg01103.html

[*] Don't be afraid to say that the name sucks, if it does. However,
in such case, please, suggest an alternative.

2006-12-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

PR middle-end/7651
* c.opt (Wuninitializable-member): New.
* doc/invoke.texi (Wuninitializable-member): Document it.
(Wextra): Enabled by -Wextra.
(C++ Language Options): Add it.
* c-opts.c (c_common_post_options): Enabled by -Wextra.

cp/
2006-12-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

PR middle-end/7651
* class.c (check_field_decls): Replace Wextra with Wuninitializable-member.

testsuite/
2006-12-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

PR middle-end/7651
* g++.dg/warn/Wuninitializable-member.C: New.
* g++.dg/warn/Wuninitializable-member-Wextra.C: New.
* g++.dg/warn/Wuninitializable-member-no.C: New.

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