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Groups > comp.lang.c++ > #11796
| From | Johannes Schaub <schaub.johannes@googlemail.com> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: Mutability of temporary variables |
| Date | 2011-11-24 20:36 +0100 |
| Organization | albasani.net |
| Message-ID | <jam2ml$rm2$1@news.albasani.net> (permalink) |
| References | <op.v4605gilpbcp0d@localhost.localdomain> <ja8dkh$snr$1@news.albasani.net> <op.v5fa6tmvpbcp0d@localhost.localdomain> |
kyle wrote:
> Dnia 19-11-2011 o 16:16:45 Johannes Schaub
> <schaub.johannes@googlemail.com> napisał(a):
>
>> kyle wrote:
>>
>>> Consider following code:
>>>
>>> int main() {
>>> const int& c = int();
>>> int& m = const_cast<int&>(c);
>>> m = 4;
>>> }
>>>
>>
>> The error in your thinking is that you think that "int()" is a temporary
>> object.
>>
>
> This is indeed what i assumed.
> As i understand, i could 'fix' the code by having a function 'int foo()
> {return 1;}' and using it in place of 'int()'?
>
No, as someone else already said, rvalues of non-class and non-array type
are not objects, and the rules for initialization of references adequately
are worded to take that into account. It will behave exactly like the
"int()" case.
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Mutability of temporary variables kyle <kyle@nomail.com> - 2011-11-19 13:33 +0100
Re: Mutability of temporary variables Paavo Helde <myfirstname@osa.pri.ee> - 2011-11-19 07:18 -0600
Re: Mutability of temporary variables Victor Bazarov <v.bazarov@comcast.invalid> - 2011-11-19 08:45 -0500
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-19 14:25 +0000
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 00:14 +0000
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-20 00:45 +0000
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-20 01:14 +0000
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 02:34 +0000
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 02:44 +0000
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-20 13:06 +0000
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-20 13:21 +0000
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 16:51 +0000
Re: Mutability of temporary variables Leigh Johnston <leigh@i42.co.uk> - 2011-11-20 17:24 +0000
Re: Mutability of temporary variables SG <s.gesemann@gmail.com> - 2011-11-20 00:49 -0800
Re: Mutability of temporary variables Victor Bazarov <v.bazarov@comcast.invalid> - 2011-11-19 08:42 -0500
Re: Mutability of temporary variables Paavo Helde <myfirstname@osa.pri.ee> - 2011-11-19 08:20 -0600
Re: Mutability of temporary variables Victor Bazarov <v.bazarov@comcast.invalid> - 2011-11-19 15:51 -0500
Re: Mutability of temporary variables Paavo Helde <myfirstname@osa.pri.ee> - 2011-11-19 16:51 -0600
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 00:23 +0000
Re: Mutability of temporary variables Johannes Schaub <schaub.johannes@googlemail.com> - 2011-11-19 16:16 +0100
Re: Mutability of temporary variables "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-11-20 00:31 +0000
Re: Mutability of temporary variables kyle <kyle@nomail.com> - 2011-11-24 00:50 +0100
Re: Mutability of temporary variables Johannes Schaub <schaub.johannes@googlemail.com> - 2011-11-24 20:36 +0100
Re: Mutability of temporary variables SG <s.gesemann@gmail.com> - 2011-11-21 01:17 -0800
Re: Mutability of temporary variables Johannes Schaub <schaub.johannes@googlemail.com> - 2011-11-22 23:26 +0100
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