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Stefan Teleman edited comment on STDCXX-1055 at 2/6/12 9:47 PM:
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About the protected virtual destructors:
The Standard specification is very explicit about declaring all these destructors protected
virtual. I checked C++1998, C++2003 and C++2011, and in all three Standard specifications,
these destructors are protected.
Allowing them to be public by default (and not as a stdcxx extension) leads to writing very
unportable code - which I guess goes against the purpose of having a Standard in the first
place. Not to mention that it is a violation of the Standard spec.
I am not sure I understand the advantage of having these destructors public.
was (Author: steleman):
About the protected virtual destructors:
The Standard specification is very explicit about declaring all these destructors protected
virtual. I checked C++1998, C++2003 and C+2011, and in all three Standard specifications,
these destructors are protected.
Allowing them to be public by default (and not as a stdcxx extension) leads to writing very
unportable code - which I guess goes against the purpose of having a Standard in the first
place. Not to mention that it is a violation of the Standard spec.
I am not sure I understand the advantage of having these destructors public.
> some of the localization class declarations do not follow the ISO/IEC:14882:2003 specification
> ----------------------------------------------------------------------------------------------
>
> Key: STDCXX-1055
> URL: https://issues.apache.org/jira/browse/STDCXX-1055
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 22. Localization
> Affects Versions: 4.2.1, 4.2.2, 4.2.x, 4.3.x, 5.0.0
> Environment: Solaris 10 and 11, Linux (RedHat and OpenSUSE), Sun C++ Compiler
12.1, 12.2, 12.3, GCC4.
> The defect is independent of platform or compiler.
> Reporter: Stefan Teleman
> Labels: conformance, standards
> Fix For: 4.2.x, 4.3.x, 5.0.0
>
> Attachments: stdcxx-1055.patch
>
>
> For the following classes:
> std::codecvt<> and its specializations
> std::collate<> and its specializations
> std::ctype<> and its specializations
> std::ctype_byname<> and its specializations
> std::messages<> and its specializations
> std::messages_byname<> and its specializations
> std::money_get<> and its specializations
> std::moneypunct<> and is specializations
> std::moneypunct_byname<> and its specializations
> std::money_put<> and its specializations
> std::num_get<> and its specializations
> std::numpunct<> and its specializations
> std::numpunct_byname<> and its specializations
> std::num_put<> and its specializations
> std::time_get<> and its specializations
> std::time_get_byname<> and its specializations
> std::time_put<> and its specializations
> 1. all these type declarations must be of class type (and not of struct type)
> 2. all these classes must have protected virtual destructors
> 3. all the corresponding *_base (time_base, money_base, etc), must have virtual destructors
> The current implementation of these types as structs (with default public access
> specifier on their non-virtual destructors) causes failures in Perennial CPPVS V8.1.
> Changing the access specifier for these destructors requires some changes in the
> stdcxx tests for localization.
> Patch based on 4.2.1 to follow shortly.
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