July 2004 - Boost - lists.boost.org

Spirit: Some more regressions
by Joel de Guzman 30 Jul '04

30 Jul '04

Hi, The CVS (Boost) state for Spirit is very good. However, there are still some few regressions remaining. I do not understand some of the reports on compilers that I do not have access to. I wonder if some of you guys can help out. I'd appreciate that a lot. Help might mean as simple as peeking into the reports and forming an educated guess. TIA... <http://www.meta-comm.com/engineering/boost-regression/developer/spirit.html> 1) Comeau: http://tinyurl.com/5h5f6 2) VC8: http://tinyurl.com/3jmem The other errors are either boost.threads errors (still) or similar to the 2 above. I'll inquire about the threads errors in a separate post. Ah, yes, intel- win32- 7.1- vc6- stlport- 4.5.3 has runtime failures (e.g. http://tinyurl.com/4tfq6) Hartmut diagnosed these: <q> These two are easy. The reason for these errors comes from the fact, that the STLPort library is compiled independently from the test application and the command line options, which define, whether the wchar_t is an intrinsic type or not are different for the two compilation units. As a result the wrong std::numeric_limits specialisation gets picked during the compilation of the test program, which at runtime leads to the failed assertion. For a long time it wasn't possible to detect from inside a program (while compiled with the Intel on the Windows platfrom), whether it is compiled with wchar_t as an intrinsic time or not (for the Intel V8 this fact fixed recently), so I don't see a way to fix the problems right now </q> Any ideas, anyone? Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net

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Re: Re: Threads Rewrite?
by Tonko Juricic 30 Jul '04

30 Jul '04

Stefan Seefeld wrote: > That's often impossible: objects and threads are > orthogonal by nature: you don't always control what > thread executes your code. But as it is your code > that needs TLS you may have to inject TLS variables > in *any* thread that comes your way, and so it has > to be cleaned up in a uniform way. Let me try to understand it better. We start with the fact that some parts of your code can be executed by both boost and non-boost threads. A stumbling block in my case is understanding how can your code be executed by a non-boost thread unless, at some level, you explicitly make it possible. So, if I didn't completely miss the point, TLS cleanup for non-boost threads is there to spare the programmer from having to analyze complex scenarious and calling sequences which may lead to a non-boost thread visiting the 'unsuspecting' method on your object. Tony __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Algorithm/minmax lib missing copyrights
by John Maddock 29 Jul '04

29 Jul '04

The following files are missing copyrights in the minmax lib: libs/algorithm/minmax/example/minmax_ex.cpp libs/algorithm/minmax/example/minmax_timer.cpp libs/algorithm/minmax/test/minmax_element_test.cpp libs/algorithm/minmax/test/minmax_test.cpp Can the Author please fix? Many thanks, John Maddock.

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[assign][multi_array] possible problem with both libs together?
by JOAQUIN LOPEZ MU?Z 29 Jul '04

29 Jul '04

I thought I'd bring this mail from the users list to your attention: http://lists.boost.org/MailArchives/boost-users/msg07311.php Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Original message To: boost-users@xxxxxxxxxxxxxxx Subject: [Boost-users] Assign and MultiArray conflict with precompiledheaders From: Bruno Martínez Aguerre <br1@xxxxxxxxxxxxxxx> Date: Wed, 28 Jul 2004 16:49:42 -0300 Reply-to: boost-users@xxxxxxxxxxxxxxx Sender: news <news@xxxxxxxxxxxxx> User-agent: Opera M2/7.51 (Win32, build 3798) -------------------------------------------------------------------------------- Hi. I'm trying out the recently accepted Assign library, and also the MultiArray library, which is new to me. I'm in VC7.1, and using the post review version of Assign. Depending on the order I include the libraries in my precompiled header, the linker complains about double definition of MultiArray's extents object. Here are the files that reproduce the problem. //stdafx.h #pragma once #include "boost/multi_array.hpp" #include "boost/assign.hpp" //main.cpp #include "stdafx.h" int main() { boost::multi_array<int, 2> t(boost::extents[3][4]); } I couldn't find relation between the two libraries. Thanks in advance, Bruno Martínez

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Re:Re: Re:Javascript Tree Control [was: Serialization Menu
by Robert Ramey 29 Jul '04

29 Jul '04

Jonathan Turkanis >I agree with all of this. But I think that having a tree control component >is still useful: I didn't mean to suggest otherwise. My experience with this was a) fiddling around with Javascript and DOM (IE and Netscape) to get things to work. b) making my own tree by hand. Basically both of these were hacks and I'm happy to see a) done in a professional way. b) was really tedious and I saw the need to automate this process which seemed very much in the spirit of Boost Book (which I havn't spent any time with either) Basically we've got a) we need a)+b). I'm happy to leave the details to you guys as you know much more about it and it seems that there is broad agreement on the basic idea. Robert Ramey

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Re: [boost] Re: Javascript Tree Control [was: Serialization Menu]
by Reece Dunn 29 Jul '04

29 Jul '04

Jeff Garland wrote: >On Wed, 28 Jul 2004 09:41:22 -0600, Jonathan Turkanis wrote > > "Jeff Garland" <jeff(a)crystalclearsoftware.com> wrote in message > > news:20040728115709.M55567@crystalclearsoftware.com... > > > On Tue, 27 Jul 2004 21:19:38 -0600, Jonathan Turkanis wrote > > > (I was able to do it with right mouse on the right pane, open in new > > > window/tab). However, is there a way to get the address bar to > > point to the > > > right frame instead of the left pane so that the current URL is > > immediately > > > accessible? My major objection to frames is that I can't see and > > grab the > > > current URL... > > > > I agree. See http://tinyurl.com/3sdu6. > >Thanks, for the pointer on sync. I didn't read all the rationale. I wish I >could come up with a more intuitive name -- it didn't hit me at first what >sync was for. Anyway, I was using Firefox 0.9.1 on Linux. I tested a >couple >more browsers: Galeon 1.3.12 and Epiphany 1.0.7 automatically sync -- very >cool! Konqueror 3.2.0 does not :( Would it be possible to do the sync automatically via the JavaScript control? It could be possible to do something like: <a href = "javascript:tree.load('id.1.2')">Chapter 1.2: Cool Stuff!</a> With load performing the URL redirection and synchronisation. I am not sure how portable this would be, but having it done automatically would mean that there would be less confusion and a simpler interface. >Oh, and I'm of course in support of boost-book initiatives to generate >these >capabilties -- after all, transformation to various forms is the whole >point >of getting the docs into xml... Exactly. Regards, Reece _________________________________________________________________ Use MSN Messenger to send music and pics to your friends http://www.msn.co.uk/messenger

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property map, boost::identity_property_map
by Val Samko 29 Jul '04

29 Jul '04

Hi, is there any reason, why boost::identity_property_map implementation in <boost\property_map.hpp> is completely different from how it is documented in http://www.boost.org/libs/property_map/identity_property_map.html ? As mentioned in the implementation, boost::identity_property_map is a property map that applies the identity function to integers. On the other hand, documentation clearly states that one can use identity_property_map with any types. Valentin Samko http://val.samko.info

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BOOST_MPL_AUX_AGLORITHM_NAMESPACE_END in wrong place
by Jonathan Wakely 29 Jul '04

29 Jul '04

In boost/mpl/if.hpp the BOOST_MPL_AUX_AGLORITHM_NAMESPACE_BEGIN macro is inside a test for BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION, but the corresponding BOOST_MPL_AUX_AGLORITHM_NAMESPACE_END is after the #endif that matches the test. This doesn't cause an error, since those macros only expand to anything meaningful for GCC3, which enters the first branch of the #if, so the begin/end macros are balanced - but it ain't right. Bug was found due to an error with missing #endif, which made GCC3 take a different path through that file and error. Note also those macros are spelled "AGLORITHM" not ALGORITHM. Untested patch attached. jon -- "Faith strikes me as intellectual laziness." - Robert Heinlein

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Python / extract.cpp: disable warning
by Stefan Slapeta 29 Jul '04

29 Jul '04

This warning in the extract test case should also be disabled for Intel 8: ..\libs\python\test\extract.cpp(59): warning #473: returning reference to local temporary return extract<std::string const&>(x); ^ BTW, is this a compiler defect? S.

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libboost_regex, FreeBSD problems
by Steve Bobrowski 29 Jul '04

29 Jul '04

Hi, I did some development with libboost_regex-gcc.so (1.31.0) on a Linux platform: no problems. However, when I try to compile on FreeBSD, I get the following errors: g++ -o myprog Unit1.o Unit2.o /usr/local/lib/libboost_regex-gcc.so /usr/local/lib/libboost_regex-gcc.so: undefined reference to 'pthread_mutex_unlock' /usr/local/lib/libboost_regex-gcc.so: undefined reference to 'pthread_mutex_destroy' /usr/local/lib/libboost_regex-gcc.so: undefined reference to 'pthread_mutex_lock' /usr/local/lib/libboost_regex-gcc.so: undefined reference to 'pthread_mutex_init' I've installed Boost on the FreeBSD platform using both the ports package available from freebsd.org and the source from boost.org. Both yield the same results. Any ideas appreciated, as I am not that experienced with C++, Boost, and cross-platform deployment. Thanks, Steve

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