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

contribution to the organization
by anshu khare 18 Dec '19

18 Dec '19

Respected sir/madam Please guide me on how to start contributing to the organization. Thank You Regards Anshu Khare

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Boost public key
by David P. Riedel 16 Dec '19

16 Dec '19

Hi I'm trying to find the boost public pgp key so I can validate the release archive against its signature file. But I can't find where to import the public key from or what it is called. Thanks for any help.

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Contribution to the organisation
by anshu khare 16 Dec '19

16 Dec '19

Respected Sir / Ma'am I know C++. I am new to BOOST. Please guide me on how to get started? Regards Anshu Khare

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Compilation issue
by Xikai Jiang 16 Dec '19

16 Dec '19

Dear developers: I encountered an error when compiling software that uses boost. I'm using boost_1.72.0, and the compiler I used is intel mpiicpc (ICC) 16.0.3 20160415 Below is the error message: [ 1%] Building CXX object src/core/CMakeFiles/EspressoCore.dir/accumulators.cpp.o In file included from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/utility.hpp(22), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/size.hpp(25), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/functions.hpp(20), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/iterator_range_core.hpp(38), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/iterator_range.hpp(13), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/detail/range_return.hpp(14), from /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/range/algorithm/remove_if.hpp(16), from /THL7/home/hugq/xikai_jiang/Softwares/espresso-4.1.2/src/core/accumulators.cpp(21): /THL7/home/hugq/xikai_jiang/Softwares/boost_1_72_0/build/include/boost/core/noncopyable.hpp(42): error: defaulted default constructor cannot be constexpr because the corresponding implicitly declared default constructor would not be constexpr BOOST_CONSTEXPR noncopyable() = default; ^ compilation aborted for /THL7/home/hugq/xikai_jiang/Softwares/espresso-4.1.2/src/core/accumulators.cpp (code 2) make[2]: *** [src/core/CMakeFiles/EspressoCore.dir/accumulators.cpp.o] Error 2 make[1]: *** [src/core/CMakeFiles/EspressoCore.dir/all] Error 2 make: *** [all] Error 2 Let me know if you need further information to diagnose the issue. Hints to resolve the issue are appreciated. Regards, Xikai

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Boost 1.70 Thread library and Sun Studio Pro 12.4
by mik 12 Dec '19

12 Dec '19

Hi, just to signal an issue that I encounter with the boost (1.70) thread library compiling my library. I got this linking problem: Undefined first referenced symbol in file void boost::detail::set_tss_data(const void*,void(*)(void(*)(void*),void*),void(*)(void*),void*,bool) CMakeFiles/basic.dir/containers/MemoryPool.cpp.o void*boost::detail::get_tss_data(const void*) CMakeFiles/basic.dir/containers/MemoryPool.cpp.o So I investigated and I found that was missing the export keyword for Sun Solaris. I modified the file boost/thread/detail/config.hpp:498 in this way #elif (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4) || (__SUNPRO_CC) and I solved it. I hope this could be useful for someone. Regards, Mirko

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coroutine/asymmetric_coroutine.hpp no member named 'begin' in namespace boost
by Martijn Otto 12 Dec '19

12 Dec '19

After upgrading from boost 1.71 to 1.72 the following simple example now leads to a compilation error: #include <boost/asio/spawn.hpp> int main() { return 0; } The compilation errors point to a missing boost::begin and boost::end functions: /usr/local/include/boost/coroutine/asymmetric_coroutine.hpp:2364:10: error: no member named 'begin' in namespace 'boost'; did you mean simply 'begin'? { return boost::begin( c); } It goes on for a while, but I think the problem is clear. The source of this problem seems that between 1.71 and 1.72 in boost/coroutine/asymmetric_coroutine.hpp the include of boost/range.hpp was removed, which leads to these functions being undefined. To me it looks like a clear bug, but the fact that this include was removed points to some deliberate action. Am I missing something?

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[release] Boost 1.72.0 has been released
by Marshall Clow 12 Dec '19

12 Dec '19

Release 1.72.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains new libraries and numerous enhancements and bug fixes for existing libraries. For details, including download links, see < http://www.boost.org/users/news/version_1.72.0> You can also download directly from: < https://dl.bintray.com/boostorg/release/1.72.0/> To install this release on your system, see < http://www.boost.org/doc/libs/release/more/getting_started/index.html> Thanks to everyone who participated in this release. Thanks, -- The Boost Release Team Marshall Clow, Michael Caisse

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[Urgent] ./bootstrap.sh from boost_1_70_0 is failing in SunOS
by kamallochan Jena 11 Dec '19

11 Dec '19

Hi All, Thanks for your support!!! In SunOS platform, The bootstrap.sh from boost_1_70_0 failed with error " ./build.sh: syntax error at line 143: `machine=$' unexpected " Can any one look into it and kindly suggest how to fix this issue and proceed further. *It is blocking our current project build!!!* *PFB, the details:* $ uname -a SunOS kamal Generic_150401-55 i86pc i386 i86pc $ cd 3rdparty/boost/tools/build $ ls boost-build.jam bootstrap.bat CONTRIBUTING.rst example Jamroot.jam notes src bootstrap_vms.com bootstrap.sh doc index.html LICENSE.txt README.rst test $ ./bootstrap.sh -n Bootstrapping the build engine with toolset sun... Failed to bootstrap the build engine Consult 'bootstrap.log' for more details $ cat bootstrap.log ./build.sh: syntax error at line 143: `machine=$' unexpected Thanks, Kamal

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[release] 1.73.0 open for merging
by Marshall Clow 11 Dec '19

11 Dec '19

The master branch is open for merging all stable changes from develop, including bug fixes and major upgrades to existing libraries. Breaking changes should be coordinated via the mailing list with the developers of the other libraries affected. New libraries may be added, but require permission of a release manager. In other words, merging does not require permission from a release manager, except for new libraries. Boost Calendar with the release schedule: http://www.boost.org/development/index.html Release schedule explanation: https://github.com/boostorg/boost/wiki/Release-Schedule Release practices for developers: http://svn.boost.org/trac/boost/wiki/ImprovingPractices -- The Boost Release Team

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Boost 1.70 unordered_set problem with Sun Solaris Studio 12.3
by mik 11 Dec '19

11 Dec '19

Hi again, this time I've a problem to compile a simple program using an unordered_set. The program is the following: --- //main.cpp #include <boost/config.hpp> #include <boost/unordered_set.hpp> #include <boost/functional/hash.hpp> int main() { boost::unordered::unordered_set<std::string> set; return 0; } --- I compile it with the command below: CC main.cpp -o test -library=stlport4 -I/.../boost_1_70_0/ and I got the error: ir_build_type(): unexpected type Please help me!! Thank you, Mirko

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Boost 1.70 - Test library error on Sun Solaris Studio 12.3
by mik 11 Dec '19

11 Dec '19

Hi, I'm triying to compile the boost 1.70 on Sun solaris using the version 12.3, but I got an annoying error on the test library: "./boost/test/unit_test_log_formatter.hpp", line 39: Error: Identifier expected instead of "__global". For what I can understand it seems that compiler doesn't recognize the keyword __global. Below, there's the command line that I've used: ./b2 toolset=sun variant=debug address-model=64 threading=multi link=shared runtime-link=shared --with-test Do you have any suggestions? Thanks, Mirko

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[release] Boost 1.72.0 Release Candidate 2
by Marshall Clow 10 Dec '19

10 Dec '19

The second release candidates for the 1.72.0 release are now available at: <https://dl.bintray.com/boostorg/release/1.72.0/source/> The SHA256 checksums are as follows: 247a91dd7e4d9dd3c4b954b532fbc167ba62dc15ab834e5ad893d7c3f9eb5f0f ./boost_1_72_0_rc2.7z 59c9b274bc451cf91a9ba1dd2c7fdcaf5d60b1b3aa83f2c9fa143417cc660722 ./boost_1_72_0_rc2.tar.bz2 c66e88d5786f2ca4dbebb14e06b566fb642a1a6947ad8cc9091f9f445134143f ./boost_1_72_0_rc2.tar.gz 8c20440aaba21dd963c0f7149517445f50c62ce4eb689df2b5544cc89e6e621e ./boost_1_72_0_rc2.zip Changes since RC1: * A change to Boost.Proto that would cause compilation failures on the latest MS compiler. As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. -- The Boost Release Managers

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[release] Boost 1.72.0 Release Candidate 1
by Marshall Clow 05 Dec '19

05 Dec '19

The first release candidates for the 1.72.0 release are now available at: <https://dl.bintray.com/boostorg/release/1.72.0/source/> The SHA256 checksums are as follows: fcd8b598bc63ae7bbd3e72635d95b9d749ef65f4e5342c24445ea1fb9d417ac3 boost_1_72_0_b1_rc1.7z f6a527a261e273bfd2b6161d359ab9fb53c1795239c696f501a62f575cd30bda boost_1_72_0_b1_rc1.tar.bz2 8e591146d39e8cb45c74540aae26ae6321b1e83ab1b12e236dd117f93475ceb9 boost_1_72_0_b1_rc1.tar.gz 3425e7bfd49a6ad70aa7e82c1c740f7821eb58d14604b133be4dfbcdc0c58e3a boost_1_72_0_b1_rc1.zip As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. -- The Boost Release Managers

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[review][fixed_string] FixedString review starts today
by Joaquin M López Muñoz 05 Dec '19

05 Dec '19

The Boost formal review of Krystian Stasiowski and Vinnie Falco's FixedString library starts today November 25 and extends up to December 4. Description FixedString provides a dynamically resizable string of characters with compile-time fixed capacity and contiguous embedded storage in which the characters are placed within the string object itself. Its API closely resembles that of std::string. Repo and docs GitHub repository: https://github.com/18/fixed_string Online docs: https://18.github.io/doc/fixed_string Review questions Here are some questions you might want to answer in your review: - What is your evaluation of the design? - What is your evaluation of the implementation? - What is your evaluation of the documentation? - What is your evaluation of the potential usefulness of the library? - Did you try to use the library? With what compiler? Did you have any problems? - How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? - Are you knowledgeable about the problem domain? And finally, every review should answer this question: - Do you think the library should be accepted as a Boost library? I invite you to submit your review, either publicly to the developers or the users lists, or else, if for whatever reason you don't want to go public, directly to me. Thank you for investing your time on reviewing Krystian and Vinnie's work and for contributing to the advancement of Boost. Best regards, Joaquín M López Muñoz Review manager for candidate Boost.FixedString

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PDF document download?
by Hong Xu 01 Dec '19

01 Dec '19

Hi all, It seems like the PDF documentation link on the download page is significantly outdated: https://www.boost.org/users/download/ In the link, the latest PDF documentation is 1.56.0. Is there any plan to update this? Thanks, Hong

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Write Property Tree JSON on a single line
by aCPlusPlusDeveloper 29 Nov '19

29 Nov '19

Is it possible to force the boost::propertytree::write_json method to write the entire json tree on a single line (not human readable at all but to save file size)? Sent with [ProtonMail](https://protonmail.com) Secure Email.

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Interest in a C++20 Unit Testing Framework?
by Krzysztof Jusiak 27 Nov '19

27 Nov '19

Hi, I was wondering whether there is any interest in exploring a C++20 single header/single module, macro-free Unit Testing Framework with no dependencies? Github: https://github.com/boost-experimental/ut Additional links: - Try it online: https://godbolt.org/z/uVDxkW - Benchmarks: https://github.com/boost-experimental/ut#benchmarks - How it works?: https://github.com/boost-experimental/ut#how-it-works Thanks, Kris

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Building with CMake?
by Robert Dailey 25 Nov '19

25 Nov '19

I see that individual repositories like boostorg/filesystem on Github have a CMakeLists.txt. But the boostorg/boost super repo doesn't have a root CMakeLists.txt. Either this doesn't follow standard CMake structure or there's no way to build with CMake globally instead of bjam. How can I build the boost libraries with CMake?

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Re: [Boost-users] [boost] Interest in a C++20 Unit Testing Framework?
by Krzysztof Jusiak 24 Nov '19

24 Nov '19

I see your point, but I'm not advocating here for providing multiple ways of doing the same thing as I agree it might be confusing although I'd also argue that it's already a case with boost.test for example (single header/static/shared library or BOOST_TEST, BOOST_CHECK, BOOST_CHECK_EQ accomplish pretty much the same things but there are also a trade-offs here so it depends) Also, having a possibility for users to do so is valuable IMHO but I wouldn't expose any macros from the library. On Sun, Nov 24, 2019 at 9:55 AM Hans Dembinski <hans.dembinski(a)gmail.com> wrote: > > > On 23. Nov 2019, at 04:31, Krzysztof Jusiak via Boost < > boost(a)lists.boost.org> wrote: > > > However, with [Boost].UT there is nothing stopping anyone from using > simple > > macros (one-lines) to achieve other frameworks syntax > > The good bit about it is that it's an opt-in 'feature' as opposed to > being > > the only available option (see example below [1]). > > But then you have split in the user base, some will use the macros others > will use the macro-free syntax, and both will have difficulty in > understanding the code of other. > >

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Re: [Boost-users] [boost] Interest in a C++20 Unit Testing Framework?
by Vinnie Falco 24 Nov '19

24 Nov '19

On Sun, Nov 24, 2019 at 9:49 AM Hans Dembinski via Boost <boost(a)lists.boost.org> wrote: > both will have difficulty in understanding the code of other. BOOST_TEST(b) What could this possibly mean? /me scratches head Regards

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boost::regex (implementation question)
by John Emmas 23 Nov '19

23 Nov '19

Yesterday I downloaded boost v1.71.0 The file 'regex/v4/cregex.hpp' contains declarations for functions like 'regexecA' and 'regexecW'. There are similar declarations for regfree, regcomp & regerror. But where are the implementations for those functions? Or is my own app expected to provide them? Many thanks, John Emmas

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Re: [Boost-users] [boost] Interest in a C++20 Unit Testing Framework?
by mateusz＠loskot.net 23 Nov '19

23 Nov '19

<quote author='Boost - Users mailing list'> (CC'ed to boost-users) On Fri, 22 Nov 2019 at 21:53, Vinnie Falco via Boost <boost(a)lists.boost.org> wrote: > On Thu, Nov 21, 2019 at 7:24 AM Krzysztof Jusiak via Boost-users > <boost-users(a)lists.boost.org>> > > I was wondering whether there is any interest in exploring > > a C++20 single header/single module, macro-free Unit > > Testing Framework with no dependencies? > > I have no interest in a library that requires C++20, especially > considering that C++20 is not even official yet but also because once > C++20 is released, there will be hardly any users for many years. This > project seems very much like it was written "just because", to use the > latest language features, rather than for pragmatic reasons. I don't > see anything compelling to use it over Boost.LightweightTest for > example. I had a look at the current documentation and examples, and I'm glad to see I'm not the only sceptical about it. My opinion is very similar to what Hans, Raffi and Vinnie explained. Macros in testing and benchmarking frameworks are kosher, in fact, they can be very helpul to organize and structure large amount of tests that in turn makes it easier to search and browse through the code. I can't imagine how any of the modern IDE's will support the string-driven syntax. As a long time maintainer of SOCI library, I'm no stranger to the syntax-first library development [1], still, I find the UT's string-based test cases approach as an interesting curiosity with very little practical value. (It falls into similar drawer as the (over)use of emoji in commit messages on GitHub :)). Boost is known as a C++ guinea pigs playground, so any library can make it in. If it does, I just hope Boost will not allow to adopt the UT as a test framework of choice of any/too many of its libraries. [1] https://www.drdobbs.com/database/a-simple-oracle-call-interface/184405930?p… Best regards, -- Mateusz Loskot, http://mateusz.loskot.net _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users </quote> Quoted from: http://boost.2283326.n4.nabble.com/Interest-in-a-C-20-Unit-Testing-Framewor… _____________________________________ Sent from http://boost.2283326.n4.nabble.com

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[review][fixed_string] FixedString review starts Nov 25
by Joaquin M López Muñoz 21 Nov '19

21 Nov '19

The Boost formal review of Krystian Stasiowski and Vinnie Falco's FixedString library will take place November 25 - December 4, 2019. This is an early call for you to consider participating in the review. Feedback and constructive criciticism from experts and not-so-experts alike is very much welcome. FixedString being a relatively small and straightforward library, you will find it very easy to familiarize yourself with it and contribute back to the community. FixedString provides a dynamically resizable string of characters with compile-time fixed capacity and contiguous embedded storage in which the characters are placed within the string object itself. Its API closely resembles that of std::string. GitHub repository: https://github.com/18/fixed_string Online docs: https://18.github.io/doc/fixed_string If you feel like reviewing FixedString you can start now prepping --though I'd ask you to refrain from submitting actual reviews till Nov 25. Read the docs, download/fork the code, read/run it, maybe try integrating it into some project of yours, ask questions to the authors, preferrably on Boost or Boost Users mailing lists. The FixedString initiative arose from a very lively discussion within the community: https://lists.boost.org/Archives/boost/2019/09/246943.php , so I sincerely hope this review will be a fruitful, crowded one. Don't let me down! Best regards, Joaquín M López Muñoz Review manager for candidate Boost.FixedString

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[release] Boost 1.72.0 Beta 1
by Michael Caisse 21 Nov '19

21 Nov '19

Boost release 1.72.0 beta 1 is now available at: <https://dl.bintray.com/boostorg/beta/1.72.0.beta.1/source/> The SHA256 checksums are as follows: 5a6b5cbd27b8ca0c7741b715e022a3bf05aecbb1e73dc72dd82eef9622374bd5 boost_1_72_0_b1.7z 6c85a7aed198757f5e4be66a971ae90a25c4ce32703fecfb5bb19019bd80947c boost_1_72_0_b1.tar.bz2 be4a3fdaa84d5a8b25863651043308e02645f3fbf772b7623ee6462fb1dbad09 boost_1_72_0_b1.tar.gz 95181a5f3de0078b8fc031f63a4dc8be4d70b7d3d5cde3b266d2cd98bd4b61b0 boost_1_72_0_b1.zip For details of what's in the release, see <https://www.boost.org/users/history/version_1_72_0.html>. Please download the beta, give it a try, and report any problems you encounter. Thanks, -- The Boost Release Team

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boost::errinfo_stacktrace?
by Nat Goodspeed 21 Nov '19

21 Nov '19

Since the arrival of Boost.Stacktrace, I've been expecting a conventional boost::errinfo_stacktrace helper to join the suite of other boost::errinfo_mumble helpers. Is there a PR open with that? -- NAT LINDEN | Senior Software Engineer | Real Life: Nat Goodspeed LINDEN LAB | Create Virtual Experiences <https://www.lindenlab.com>

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