From: Andrew Haley <aph@redhat.com>
To: Hei Chan <structurechart@yahoo.com>,
"gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
Subject: Re: is portable aliasing possible in C++?
Date: Mon, 15 Sep 2014 11:32:00 -0000 [thread overview]
Message-ID: <5416CE53.4090803@redhat.com> (raw)
In-Reply-To: <1410780568.23391.YahooMailNeo@web165006.mail.bf1.yahoo.com>
On 09/15/2014 12:29 PM, Hei Chan wrote:
>
>
>
>
>
> On Monday, September 15, 2014 7:22 PM, Andrew Haley <aph@redhat.com> wrote:
>
>> Using memcpy(), the compiler will have to make a copy
>> because it sees that few lines, for example, down, the program tries
>> to manipulate the copy.
>
> So, don't manipulate the copy, then. Use it once, then throw it away.
>
> Sometimes, due to the endianness, I am forced to manipulate the copy...
I don't know what you mean. A small example would help.
Andrew.
next prev parent reply other threads:[~2014-09-15 11:32 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-10 23:03 haynberg
2014-09-11 8:11 ` Andrew Haley
2014-09-11 23:25 ` haynberg
2014-09-12 8:32 ` Andrew Haley
2014-09-12 22:58 ` haynberg
2014-09-13 7:23 ` Andrew Haley
2014-09-13 11:45 ` Oleg Endo
2014-09-15 2:37 ` Hei Chan
2014-09-15 8:35 ` Andrew Haley
2014-09-15 11:07 ` Hei Chan
2014-09-15 11:21 ` Andrew Haley
2014-09-15 11:29 ` Hei Chan
2014-09-15 11:32 ` Andrew Haley [this message]
2014-09-15 11:57 ` Hei Chan
2014-09-15 13:21 ` Andrew Haley
2014-09-15 13:31 ` Hei Chan
2014-09-15 14:11 ` Andrew Haley
2014-09-15 11:27 ` Jonathan Wakely
2014-09-15 12:09 ` Paul Smith
2014-11-02 23:55 ` Hei Chan
2014-11-03 9:34 ` Andrew Haley
-- strict thread matches above, loose matches on Subject: below --
2014-09-09 23:13 haynberg
2014-09-10 8:17 ` Andrew Haley
[not found] <A76FB9DDEDFA994BAF6B77704A4AF465BC2464@xchmbbal502.ds.susq.com>
2014-09-04 16:11 ` Andy Webber
2014-09-04 16:51 ` Andrew Haley
2014-09-04 17:18 ` Andy Webber
2014-09-04 17:23 ` Andrew Haley
2014-09-04 17:44 ` Andy Webber
2014-09-04 17:47 ` Andy Webber
2014-09-04 17:48 ` Andrew Haley
2014-09-04 23:11 ` Jonathan Wakely
2014-09-05 7:16 ` Andrew Haley
2014-09-05 14:19 ` Jason Merrill
2014-09-08 9:33 ` Richard Biener
2014-09-10 14:31 ` Jason Merrill
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