- Boost-users - lists.preview.boost.org

Boost serializer: incomplete type error reported
by Diego Molla 19 Jun '06

19 Jun '06

Hello, I have an error that is puzzling me. I have defined serialization of several custom classes, and everything worked perfectly until we've changed to a new Linux OS and had to reinstall Boost. Now the program doesn't compile and the error given is: error: incomplete type 'boost::serialization::extended_type_info_null<SetOfRules>' used in nested name specifier I don't really understand why it says there is an incomplete type when there used to be no errors. The same error happens with all the classes where I've defined serialization. The offending code for the above error message is: void save(const SetOfRules &sor, const string &fileName) { std::ofstream fout(fileName.c_str()); boost::archive::text_oarchive oa(fout); oa << sor; // <== Here is the error fout.close(); } // save Currently I'm using gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3) Can anybody help? Diego -- Do you want to know what is going on in Language Technology in Australia and New Zealand? Join ALTA -- http://www.alta.asn.au/ This message is intended for the addressee named and may contain confidential information. If you are not the intended recipient, please delete it and notify the sender. Views expressed in this message are those of the individual sender, and are not necessarily the views of Macquarie University. --------------------------------------------------------------------- Diego MOLLA ALIOD diego(a)ics.mq.edu.au Department of Computing http://www.ics.mq.edu.au/~diego Macquarie University

3 2

Re: [Boost-users] [Interprocess] How to Get Started?
by Wu Yinghui, Freddie 19 Jun '06

19 Jun '06

> From: > Jan Stetka <janpstetka(a)tiscali.co.uk> > Date: > Mon, 19 Jun 2006 14:05:55 +0100 > Wu Yinghui, Freddie wrote: >> Hi all, >> >> I can see that Boost.Interprocess (former Shmem) is now in the CVS. But >> is there any documentation on it to get one started? >> >> I intend to test it out for our future development, but so far I've not >> been able to find information specific to the now Interprocess library. >> So is there any documentation available anywhere on the web now? >> > > Have you looked at the documentation for shmem in the sandbox? > Thanks Not really, since I'm not sure about the changes/differences between the sandbox shmem and the interprocess in the CVS. I've not seen any pointer regarding the differences of interprocess and shmem so far. I'll try to take a look at the documentation for the sandbox shmem tomorrow, though. Hope I can get enough information there to get started. Cheers, Freddie

1 0

Good Template questions enlist
by Hughes, James 19 Jun '06

19 Jun '06

Hello all, I have a convoluted problem with templates and shared libs under Linux that I would like to get some advice on. Since it's not particularly Boost related, does anyone have any suggestions of a good mailing list on which I can ask my question. Or should I ask it here (I think not) Thanks James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

1 0

[Interprocess] How to Get Started?
by Wu Yinghui, Freddie 19 Jun '06

19 Jun '06

Hi all, I can see that Boost.Interprocess (former Shmem) is now in the CVS. But is there any documentation on it to get one started? I intend to test it out for our future development, but so far I've not been able to find information specific to the now Interprocess library. So is there any documentation available anywhere on the web now? Cheers, Freddie -- Wu Yinghui, Freddie Research & Development Software Engineer Volume Interactions Pte Ltd 1 Kim Seng Promenade, #12-01 Great World City East Tower Singapore 237994 Tel: +65 62226962 (Ext 216) Fax: +65 62226215 Email: yhwu(a)volumeinteractions.com URL: http://www.volumeinteractions.com Important: This message is intended for the recipient(s) addressed above. It contains privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it from your system. You must not read, copy, use, or disseminate this communication in any form. Thank you.

3 2

Debug data structures using aligned storage
by Pierre THIERRY 19 Jun '06

19 Jun '06

Hi, I've googled for web pages and groups, but I didn't even find anyone *asking* that question: How can I debug data structures using aligned storage? It's very practical to use a graphical debugger like DDD to browse data structures like linked lists or trees. But aligned storages, as used by boost::variant, are opaque to the debugger. Blindly, Nowhere man -- nowhere.man(a)levallois.eu.org OpenPGP 0xD9D50D8A

4 9

ADL comment in noncopyable
by Kobi Cohen-Arazi 19 Jun '06

19 Jun '06

Hi, I've seen the following comment in noncopyable.hpp namespace noncopyable_ // protection from unintended ADL What does it mean protection from unintended ADL? Thanks, -- - Kobi

9 26

variant assignement failure
by Pierre THIERRY 19 Jun '06

19 Jun '06

Hi, I've just got an error I would think impossible with variant: assigning another variant to it triggered the false assert at /usr/include/boost/variant/detail/visitation_impl.hpp:203 which, IIUC, seems to say that there is a lack of a fallback type... FWIW, it's a variant holding 3 types, an int and 2 pointers types. When the error occurs, it's in the copy constructor of an object holding such a variant, and at this moment, the rhs variant holds it's third type, the second pointer type. The exact error is, at runtime (compilation goes without a warning): /usr/include/boost/variant/detail/visitation_impl.hpp:203: typename Visitor::result_type boost::detail::variant::visitation_impl(int, int, Visitor&, VPCV, mpl_::true_, NBF, W*, S*) [with W = mpl_::int_<20>, S = boost::detail::variant::visitation_impl_step<boost::mpl::l_iter<boost::mpl::l_end>, boost::mpl::l_iter<boost::mpl::l_end> >, Visitor = boost::variant<twotypestree::tree_placeholder, twotypestree::tree<T1, T2*>::node_iterator*, twotypestree::tree<T1, T2*>::leaf_iterator*, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_>::assigner, VPCV = const void*, NBF = boost::variant<twotypestree::tree_placeholder, twotypestree::tree<T1, T2*>::node_iterator*, twotypestree::tree<T1, T2*>::leaf_iterator*, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_>::has_fallback_type_]: Assertion `false' failed. - twotypestree::tree<T1, T2*> is a tree holding a different data at it's nodes (T1 here) and it's leafs (T2* here). - twotypestree::tree_placeholder is an enum with just a value, not_a_tree The code triggering the problem is as simple as: tree_iterator(const tree_iterator& original) { pimpl_ = original.pimpl_; // pimpl_ is the variant } Would anyone see what the problem is? Confusingly, Nowhere man -- nowhere.man(a)levallois.eu.org OpenPGP 0xD9D50D8A

1 0

[test] Customizing the xml logs
by Johan Nilsson 19 Jun '06

19 Jun '06

Hi, it doesn't seem to exist a simple way to customize the xml output without rewriting the xml log formatter altogether - is that right? I'd like to be able to specifiy the tag names used (TestSuite, TestLog, TestCase etc) for compatibility with an already existing log parser. It would be nice to have the current xml_log_formatter either providing overridable methods or a traits template parameter used for setting the tag names, e.g.: enum xml_log_tag_type { testsuite_tag, ... }; class xml_log_formatter { ... private: virtual const_string tag(xml_log_tag_type t) const; }; .. or ... struct default_xml_log_tag_provider { static const_string& tag(xml_log_tag_type t); }; template<typename TagProvider = default_xml_log_tag_provider> class xml_log_formatter { ... }; ---- // Johan

2 6

[Boost.Format] Assertion failure for empty strings in VS2005
by Daniel Krügler 19 Jun '06

19 Jun '06

Hello, Since introduction of VC 8, boost::format causes an assertion failure, if empty strings are provided as format arguments, e.g. std::string arg; boost::format frmt("%s"); // Alternatively use: "%1%" std::string res = (frmt % arg).str(); This defect is well known since end of 2005 (e.g. by Mick Hollins et al. in the thread "[Boost.Format] empty string argument causes VC 8.0 to assert" or by J.S.Otis in the thread "Assertion failure usign boost::format with Visual C++ 2005" The defect was well-analyzed by Caleb Epstein and I share his opinion, that this is due to a defect in boost::io::detail::mk_str, which provides a null pointer as argument to std::string::append, which violates its preconditions. The null pointer effectively is a result of some streambuf::pbase() call, which is allowed to return a null result under well-defined conditions. My question is: Has this error been fixed since then? Thanks in advance, Daniel Krügler

2 7

[regex] boost::match_any
by Andriy Tylychko (mail.ru) 19 Jun '06

19 Jun '06

Hi. Content = "abcab", expression = "a{1, 2}b?c" + "a{1, 2}b?c" (doubled pattern). I think the expression can be simplified even more. As you can see, there's only partial match, and boost::regex_search(content, m, expression, boost::match_partial); detects it. But boost::regex_search(content, m, expression, boost::match_partial | boost::match_any); doesn't detect it. I expected that boost::match_any doesn't affect the main result (found or not), but just can return different sub-results (where and what found). Can you please explain where I'm wrong? Environment: VC 8.0, boost 1.33.1. Best regards, Andriy Tylychko, <mailto:telya@mail.ru> telya(a)mail.ru

2 1