August 2005 - Boost - lists.preview.boost.org

Foreach and typeof
by Edward Diener 17 Aug '05

17 Aug '05

Did either foreach or typeof make it into Boost 1.33 ? I see nothing about either in the documentation and I had the impression that both passed the review and were to be in Boost 1.33. I guess they will be in the next release.

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Re: [boost] Interest for a perl6-like-junctions-class?
by Rob Stewart 17 Aug '05

17 Aug '05

I posted another update to multivalues.zip. This one eliminates dependence on SFINAE, so it may compile on additional compilers. -- Rob Stewart stewart(a)sig.com Software Engineer http://www.sig.com Susquehanna International Group, LLP using std::disclaimer;

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[Test] 1.33 small typo error with MIPS Pro
by Kevin Wheatley 16 Aug '05

16 Aug '05

Under MIPS pro va_end() is a null macro and this then causes a warning, so I assume that the commas should be semi-colons. Kevin --- boost_1_33_0_gcc_3.2.3/include/boost-1_33/boost/test/impl/test_tools.ipp 2005-06-22 23:03:05.000000000 +0100 +++ boost_1_33_0/boost/test/impl/test_tools.ipp 2005-08-16 09:41:13.000000000 +0100 @@ -173,7 +173,7 @@ unit_test_log << "difference between " << arg1_descr << "{" << arg1_val << "}" << " and " << arg2_descr << "{" << arg2_val << "}" << ( tl == PASS ? " doesn't exceed " : " exceeds " ) - << toler_val << "%", + << toler_val << "%"; va_end( args ); @@ -196,7 +196,7 @@ unit_test_log << "absolute value of " << arg1_descr << "{" << arg1_val << "}" << ( tl == PASS ? " doesn't exceed " : " exceeds " ) - << toler_val, + << toler_val; va_end( args ); -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |

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[1.33.0] VC 7.1 vs. SFINAE/type traits
by Mat Marcus 16 Aug '05

16 Aug '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 In one of our projects, the following code produces some strange compilation errors under VC 7.1/boost 1.33.0. Can anyone suggest a workaround? - Mat #include <sstream> #include "boost/type_traits.hpp" #include "boost/utility/enable_if.hpp" template <typename EnumType> typename boost::enable_if<boost::is_enum<EnumType>, EnumType>::type operator ~ (EnumType a); std::stringstream t; -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.2 (Build 2424) iQA/AwUBQwIDTxIZBaoznf65EQKEyACgnVW7095czvJp1MMvNruggOxQfIQAn2Qs TAtl4P353L4rRplTeFJwW2kO =jqlu -----END PGP SIGNATURE-----

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Boost::UTF
by Owen Anderson 16 Aug '05

16 Aug '05

Hello, I was looking on Google for a good means of dealing with UTF encoded text files, and I ran across the old postings about Alberto Barbati's UTF library for Boost. While I know that the old files are still around, is there any progress being made on this front? Or is this a dead-end? Because it's exactly what I was looking for! -Owen Anderson

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boost 1.32: read_write_mutex assertion
by Slawomir Lisznianski 16 Aug '05

16 Aug '05

Hello, I'm using Boost.Threads read/write mutex with the writer scheduling priority. Under heavy load, from many threads, I'm getting the following assertion: <..>/boost/boost_1_32_0/libs/thread/src/read_write_mutex.cpp:190: void boost::deta il::thread::read_write_mutex_impl<Mutex>::do_write_lock() [with Mutex = boost::mutex]: Assertion `++loop_count == 1' failed. Abort (core dumped) The system is Linux kernel 2.4.21 (SMP) with 4 CPUs (Intel XEON MP) and g++ 3.2.3 20030502 (Red Hat Linux 3.2.3-42). Has anyone else experienced a similar problem? Thanks, Slawomir

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Re: [boost] boost dll versions
by Martin Bonner 16 Aug '05

16 Aug '05

----Original Message---- From: David Abrahams [mailto:dave@boost-consulting.com] Sent: 16 August 2005 14:19 To: boost(a)lists.boost.org Subject: Re: [boost] boost dll versions >> While the breadth of support has helped boost gain wide acceptance, >> it is also the single biggest fault of the library as well. > > ?? Breadth of support has many benefits and only a few costs, and most > of those fall on the library maintainers. Library users (ahem, like > you) might pay for a slight reduction in velocity, but that's all. No, there are two further costs that library users pay: a) Features that are not implemented because they are too hard on older compilers. b) Features that use a less convenient syntax because supporting the more convenient syntax is too hard on older compilers. c) Features that are not implemented because the library maintainer has spent her limited time on maintaining support for older compilers. Having said that, it sure makes it easier to get buy-in to boost if it doesn't involve a compiler upgrade! -- Martin Bonner Martin.Bonner(a)Pitechnology.com Pi Technology, Milton Hall, Ely Road, Milton, Cambridge, CB4 6WZ, ENGLAND Tel: +44 (0)1223 441434

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Can't upload to the sandbox?
by John Maddock 16 Aug '05

16 Aug '05

Trying to upload to the sandbox I get the following errors: Warning: fopen(userstats/johnmaddock.stat): failed to open stream: Read-only file system in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 785 Warning: fclose(): supplied argument is not a valid stream resource in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 797 Warning: fopen(stats/2005/08/month.stats): failed to open stream: Read-only file system in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 346 Warning: fwrite(): supplied argument is not a valid stream resource in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 348 Warning: fclose(): supplied argument is not a valid stream resource in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 350 Warning: fopen(stats/2005/08/16): failed to open stream: Read-only file system in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 275 Warning: fwrite(): supplied argument is not a valid stream resource in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 277 Warning: fclose(): supplied argument is not a valid stream resource in /home/groups/b/bo/boost-sandbox/htdocs/vault/include/functions.php on line 279 The uploaded file appears in the list, but can't be accessed. Anyone any ideas what's wrong? Thanks, John.

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[regex] 1.33 missing include causes compile error... MIPS Pro 7.4.1
by Kevin Wheatley 16 Aug '05

16 Aug '05

cpp_regex_traits.hpp appears to be missing an include to define std::basic_istream<> ... cc-1070 CC: ERROR File = boost_1_33_0/boost/regex/v4/cpp_regex_traits.hpp, Line = 442 The indicated type is incomplete. std::basic_istream<charT> m_is; // stream for parsing numbers. ^ A template was detected during header processing. instantiation of class "boost::re_detail::cpp_regex_traits_implementation<char>" at line 945 instantiation of "std::string boost::cpp_regex_traits<char>::error_string(boost::regex_ constants::error_type) const" at line 171 of "boost_1_33_0/libs/regex/build/../src/posix_api.cpp" 1 error detected in the compilation of "boost_1_33_0/libs/regex/build/../src/posix_api.cpp". So the attatched patch adds a suitable include to get regex compiling Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself | --- boost_1_33_0_mipspro_7.4.1/include/boost-1_33/boost/regex/v4/cpp_regex_traits.hpp 2005-07-12 10:49:10.000000000 +0100 +++ boost_1_33_0/boost/regex/v4/cpp_regex_traits.hpp 2005-08-16 14:32:00.000000000 +0100 @@ -21,6 +21,8 @@ #include <boost/config.hpp> +#include <istream> + #ifndef BOOST_NO_STD_LOCALE #ifndef BOOST_RE_PAT_EXCEPT_HPP

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[regex] MipsPro failure in boost/regex/v4/fileiter.hpp (1.33.0)
by Richard Hadsell 16 Aug '05

16 Aug '05

The mipspro build of regex fails in fileiter.cpp, because the header is missing an include: mipspro-C++-action bin/boost/libs/regex/build/libboost_regex.so/mipspro/debug/fileiter.o cc-1079 CC: ERROR File = /tmp_mnt/netDISKS/cgi/IRIX4/cgi/vendor/library/boost/boost_1_33_0/boost/regex/v4/fileiter.hpp, Line = 212 A type specifier is expected. typedef std::ptrdiff_t difference_type; ^ ... (2 similar places in the same file) The fix should be good for any compiler: diff -u -r1.1 -r1.2 --- boost/regex/v4/fileiter.hpp 2005/08/12 17:26:18 1.1 +++ boost/regex/v4/fileiter.hpp 2005/08/16 16:49:48 1.2 @@ -61,6 +61,7 @@ #elif defined(BOOST_REGEX_FI_POSIX_DIR) +#include <cstddef> #include <cstdio> #include <cctype> #include <iterator> P.S.: Thanks to Kevin Wheatley for reporting a similar problem in cpp_regex_traits.hpp, so that I didn't have to. -- Dick Hadsell 914-259-6320 Fax: 914-259-6499 Reply-to: hadsell(a)blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 44 South Broadway, White Plains, NY 10601

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