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List:       gcc
Subject:    Re: RFC: Update Intel386, x86-64 and IA MCU psABIs for passing/returning empty struct
From:       "H.J. Lu" <hjl.tools () gmail ! com>
Date:       2016-02-19 19:48:29
Message-ID: CAMe9rOohpBvF3T2Ns0_1db1uht6BE_bpKTifx1qOwVg2ksexsw () mail ! gmail ! com
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On Fri, Feb 19, 2016 at 11:03 AM, Matthijs van Duin
<matthijsvanduin@gmail.com> wrote:
> On 19 February 2016 at 14:35, Michael Matz <matz@suse.de> wrote:
>> struct S {
>>   S() {something();}
>> };
>>
>> would be an empty type, and that's not what we want.
>
> Why not? The default constructor is never invoked as part of passing
> such an object around. Its copy constructor is a nop and requires no
> reference to the original object.
>

Do you have a precise wording to describe it?

-- 
H.J.
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