Stefan Naewe wrote:
> On 6/27/2008 12:34 PM, Andrew Haley wrote:
>> Stefan Naewe wrote:
>>> Given the following:
>>>
>>>
>>> // ++ CODE
>>> struct S
>>> {
>>> const int ci;
>>> };
>>>
>>> int main()
>>> {
>>> S * s = new S;
>>> }
>>> // -- CODE
>>>
>>>
>>> Comeau Online gives me:
>>>
>>> // ++ output
>>> Comeau C/C++ 4.3.10.1 (May 29 2008 09:37:15) for ONLINE_EVALUATION_BETA1
>>> Copyright 1988-2008 Comeau Computing. All rights reserved.
>>> MODE:strict errors C++ C++0x_extensions
>>>
>>> "ComeauTest.c", line 1: warning: class "S" defines no constructor to
>>> initialize the
>>> following:
>>> const member "S::ci"
>>> struct S
>>> ^
>>>
>>> "ComeauTest.c", line 8: error: object has an uninitialized const or
>>> reference member
>>> S * s = new S;
>>> ^
>>>
>>> 1 error detected in the compilation of "ComeauTest.c".
>>>
>>> // -- output
>>>
>>>
>>> Different g++ versions
>>> 4.2.3
>>> 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
>>> gcc version 4.3.1 20080404 (prerelease) [gcc-4_3-branch revision 133917]
>>> (Ubuntu 20080404-0ubuntu1)
>>>
>>> give:
>>>
>>> // ++ output
>>> constmember.cc: In function 'int main()':
>>> constmember.cc:8: warning: unused variable 's'
>>> // -- output
>>>
>>>
>>> Reading 5.3.4.15 (and 8.5.5) of the holy standard
>>> I'd say Comeau is right, the program is ill-formed, isn't it?
>> Yes.
>
> 'Yes'
> as in
> 'Yes, the program is ill formed
> or
>
> 'Yes'
> as in
> 'Yes, the program is ill formed and there's a bug in GCC'
>
> ??
It's ill-formed. I think gcc should issue a diagnostic, so yes, GCC has
a bug, but I am uncertain.
Andrew.
