[Bug c++/60517] warning/error for taking address of member of a temporary object

["glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60517

--- Comment #8 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #7)
> To avoid duplicates, the front-end could just return something else, like
> NULL, when it detects this case (I guess the behavior is undefined and we
> can do whatever we want, no?).

I guess... Then we might as well introduce a call to __builtin_unreachable
right before the return, at the same time as we replace the return value.
>From gcc-bugs-return-446313-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 14 17:32:47 2014
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/60523] Warning flag for octal literals
Date: Fri, 14 Mar 2014 17:32:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`523

--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Octal literals are also used in macro definitions from system headers, so
care would be needed that a warning doesn't apply to those.

Such a warning should of course not apply to 0 (and maybe more generally
should not apply to any octal constant consisting of some number of
leading 0s followed by at most one nonzero digit, as those have the same
value whether interpreted as octal or as decimal).