March 2012 - Boost - lists.preview.boost.org

Release branch open for new libraries?
by Marshall Clow 10 Apr '12

10 Apr '12

When will the release branch be open for new libraries (for 1.50)? The calendar on Boost.org shows no dates for 1.50 at all. Thanks! -- Marshall Marshall Clow Idio Software <mailto:mclow.lists@gmail.com> A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait). -- Yu Suzuki

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[scope_exit] trunk tests fail on sun compiler
by lcaminiti 09 Apr '12

09 Apr '12

Hello all, I'm trying to get ScopeExit to work on Sun. 1) First it looked like all tests fail on this compiler: http://www.boost.org/development/tests/trunk/developer/scope_exit.html 2) However, I installed Solaris Studio 12.3 on my Ubuntu 10 and it seems that I can compile ScopeExit just fine with the following" $ CC -I /usr/include/i386-linux-gnu/ -I ../../.. -DBOOST_TYPEOF_EMULATION world_seq.cpp Note that: a) Sun does not support variadic macros so only ScopeExit sequence syntax will work. b) Sun does not support native type-of so BOOST_TYPEOF_EMULATION needs to be defined. Therefore, all original ScopeExit type-of emulation tests named `emulation_...` should compile (because they use the sequence syntax and define BOOST_TYPEOF_EMULATION). However, they fail... why? 3) Why when I click on the "fail" link for these tests I get no information on the Sun compiler's output? For example: http://www.boost.org/development/tests/trunk/developer/output/Sandia-sun-bo… If I follow this link I get "Error extracting file: No matching files were found.". What does this mean? Thanks a lot! --Lorenzo -- View this message in context: http://boost.2283326.n4.nabble.com/boost-scope-exit-trunk-tests-fail-on-sun… Sent from the Boost - Dev mailing list archive at Nabble.com.

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Nightly testing broken due to missing file
by Belcourt, K. Noel 07 Apr '12

07 Apr '12

error: Unable to find file or target named error: './sync/mutual_exclusion/locks/upgrade_lock/cons/ move_ctor_shared_lock_until_pass.cpp' error: referred from project at error: '../libs/thread/test'

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[signals] [vc11] Compile Error (Ticket #1499)
by Joshua Boyce 04 Apr '12

04 Apr '12

The problem causing ticket #1499 is happening again under VC11. https://svn.boost.org/trac/boost/ticket/1499 Build scripts and logs: http://dl.dropbox.com/u/74751/cpp/boost/logs/msvc32-20120319-1118.bat http://dl.dropbox.com/u/74751/cpp/boost/logs/msvc64-20120319-1118.bat http://dl.dropbox.com/u/74751/cpp/boost/logs/msvc32-20120319-1118.txt http://dl.dropbox.com/u/74751/cpp/boost/logs/msvc64-20120319-1118.txt Bumping to check for _MSC_VER <= 1700 does the trick (tested locally). Patch: http://dl.dropbox.com/u/74751/cpp/boost/patches/signals-vc11-fix-20120319-1… Once this is applied the trunk compiles cleanly (well, no errors, there are still lots of warnings) using the VC11 beta. Thanks.

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[git] Mercurial?
by Daryle Walker 02 Apr '12

02 Apr '12

Git has a competitor called Mercurial? If we're moving to a Distributed-VCS, should we go to Mercurial instead of Git? They're kind-of like CVS vs. Subversion, except I think they came up in parallel. (While Subversion was designed as an updated CVS.) I think Git was made up of a bunch of script hacks, while Mercurial was a regimented single program. I don't have a preference, but I want to make sure we consider the rival options. Daryle W.

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[test] Use of namespace qualifier before floating point functions in boost/test/impl/execution_monitor.hpp
by Jeremiah Willcock 02 Apr '12

02 Apr '12

According to http://pubs.opengroup.org/onlinepubs/009604599/basedefs/fenv.h.html, operations such as feclearexcept can be defined as macros, and at least some versions of Glibc do that by default. The use of explicit :: qualifiers before calls to those in Boost.Test fails to compile. Is there a workaround for that (other than __NO_MATH_INLINES)? -- Jeremiah Willcock

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[quickbook] coloring code syntax
by lcaminiti 02 Apr '12

02 Apr '12

Hello all, Is there a way to tell QuickBook code fragments to color words that are not C++ keyword for example in blue or in other colors? For example, in `int i = 0;` "int" is colored in blue. I'd like that in `requires Copyable<T>` "requires" is colored in blue (or some other color that I can specify). Thanks a lot! --Lorenzo -- View this message in context: http://boost.2283326.n4.nabble.com/boost-quickbook-coloring-code-syntax-tp4… Sent from the Boost - Dev mailing list archive at Nabble.com.

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[result_of] Test fails on clang trunk and gcc-4.7 due to changes in FDIS
by Michel Morin 01 Apr '12

01 Apr '12

In the code below, const int f(); decltype(f()) i = 0; `i` has type `int` (not `const int`) in C++11. This is because `f()` is a prvalue of a non-class type (i.e. `const int`) and so its cv qualifiers are ignored. C++0x drafts (before FDIS) had a special rule for function calls in decltype: if e is a function call or an invocation of an overloaded operator (parentheses around e are ignored), decltype(e) is the return type of the statically chosen function; but this was removed in FDIS. Clang-3.1 (which will be clang-3.1) and gcc-4.7 seem to have implemented this change, and this change breaks the test case (libs/utility/test/result_of_test.cpp) on those compilers in a C++11 mode. The following are the errors messages: [1] result_of_test.cpp:210:3: error: static assertion failed: (is_same<result_of<const result_of_member_function_template(double)>::type, const double>::value) [2] result_of_test.cpp:211:3: error: static assertion failed: (is_same<result_of<volatile result_of_member_function_template(double)>::type, volatile double>::value) [3] result_of_test.cpp:212:3: error: static assertion failed: (is_same<result_of<const volatile result_of_member_function_template(double)>::type, const volatile double>::value) [4] result_of_test.cpp:239:3: error: static assertion failed: (is_same<result_of<const volatile no_result_type_or_result_of(void)>::type, const unsigned short>::value) [5] result_of_test.cpp:244:3: error: static assertion failed: (is_same<result_of<const volatile no_result_type_or_result_of_template<void>(void)>::type, const unsigned short>::value) Regards, Michel

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Status of proposed boost.overload?
by niXman 01 Apr '12

01 Apr '12

Hello list! boost.overload: http://svn.boost.org/svn/boost/sandbox/overload/ The library will be accepted into the boost libraries ? -- Regards, niXman

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[container][memory] Request to move allocator_arg_t and uses_allocator to a memory related file.
by Vicente J. Botet Escriba 31 Mar '12

31 Mar '12

Hi, I want to add Allocators to the packaged_task and promise class of Boost.Thread template <class Allocator> promise(allocator_arg_t, const Allocator& a); template <class F, class Allocator> explicit packaged_task(allocator_arg_t, const Allocator& a, F&& f); I see that Boost.Container has already defined in namespace boost::container and in file boost/container/scoped_allocator.hpp the following struct allocator_arg_t { }; constexpr allocator_arg_t allocator_arg = allocator_arg_t(); template <class T, class Alloc> struct uses_allocator; I would like to shared these to all the Boost libraries. I don't think it is a good idea to make Boost.Thread depend on Boost.Container just for this. Could these declarations be included in a specific file? These declaration are included in <memory> in the C++11. What would be the best library to contain these declarations? What about a new boost/memory.hpp file? What about moving them to the boost or boost::memory namespace? Best, Vicente

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