From: "Andy Falanga (afalanga)" <afalanga@micron.com>
To: Jonathan Wakely <jwakely.gcc@gmail.com>
Cc: Andrew Haley <aph@redhat.com>,
"gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
Subject: RE: Possible bug in gcc 4.4.7
Date: Thu, 18 Sep 2014 20:40:00 -0000 [thread overview]
Message-ID: <60F6FAE47D1BCE4380CC06D18F49789B93F83098@NTXBOIMBX02.micron.com> (raw)
In-Reply-To: <CAH6eHdT8h4u1J1nrQ=geL=05uWmdSNQSd61sKK-xYHfmFfxL0Q@mail.gmail.com>
>
> So looking into reinterpret_cast is not very relevant.
>
> You are using a reference of type unsigned int& to access something
> that is not an unsigned int, that's the problem.
>
> The fact you used reinterpret_cast to create the reference is not
> relevant, it's what you did with the reference after you created it
> that is the problem. This is undefined in the same way, but doesn't use
> reinterpret_cast:
>
> Flag f1;
> void* vp = &f1;
> *static_cast<unsigned int*>(vp) = 1;
Ok, thanks. I think I get it now.
next prev parent reply other threads:[~2014-09-18 20:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-17 16:17 Andy Falanga (afalanga)
2014-09-17 17:00 ` Jonathan Wakely
2014-09-17 17:15 ` Andy Falanga (afalanga)
2014-09-17 18:05 ` Andrew Haley
2014-09-17 20:34 ` Andy Falanga (afalanga)
2014-09-18 0:12 ` Jonathan Wakely
2014-09-18 14:25 ` Andy Falanga (afalanga)
2014-09-18 17:42 ` Jonathan Wakely
2014-09-18 20:40 ` Andy Falanga (afalanga) [this message]
2014-09-17 23:57 ` Jonathan Wakely
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