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Waddress-of-register


:ADDPATCH c++:

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

It adds a new option -Waddress-of-register that takes over the
function of warning about subscripting an array which has been
declared "register" or taking the address of a variable which has been
declared "register". 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


2006-12-25 Manuel Lopez-Ibanez <manu@gcc.gnu.org>


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

cp/
2006-12-25  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

 PR middle-end/7651
 * typeck.c (build_array_ref): Replace Wextra with
 Waddress-of-register.
 (cxx_mark_addressable): Likewise.

testsuite/
2006-12-25  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

 PR middle-end/7651
 * g++.dg/warn/register-var-2.C: Delete. Included in ...
 * g++.dg/warn/Waddress-of-register.C: New.
 * g++.dg/warn/Waddress-of-register-Wextra.C: New
 * g++.dg/warn/Waddress-of-register-no.C: New.

Attachment: waddress-of-register.diff
Description: Text document


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