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NNTP-Posting-Date: Sat, 29 Apr 2017 05:30:52 -0500
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: gcc failure (optimised/non-optimised)
References: <odf2pf$dd0$1@dont-email.me> <odf5er$m60$1@flame.srcf.net> <odf8vf$1v1$1@dont-email.me> <87shl0enji.fsf@gmail.com> <odkbhl$72p$1@dont-email.me> <ln7f29q0pw.fsf@kst-u.example.com> <oe0c6j$b2v$1@dont-email.me> <77bf027a-bf2c-41c1-8daa-bade4b803842@googlegroups.com> <87d1bvoirg.fsf@gmail.com> <87y3uj4it5.fsf@bsb.me.uk>
Date: Sat, 29 Apr 2017 11:30:52 +0100
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Ben Bacarisse <ben.usenet@bsb.me.uk> writes:

> Gareth Owen <gwowen@gmail.com> writes:
>
>> supercat@casperkitty.com writes:
>>
>>>       if (message+5 == &magic)
>>
>> I think this equality expression may be UB in C11 (S6.5.8.5)
>> It's merely unspecified in C++.
>
> You are looking at the wrong section.  It's 6.5.9 (p6) that applies.

I stand corrected.  Thanks.