This bug was fixed in the package libc++ - 3.7.0-1ubuntu0.1 --------------- libc++ (3.7.0-1ubuntu0.1) xenial; urgency=medium
* Fix error int the string header in c++11 mode (LP: #1610168). -- Sergey Vidyuk <[email protected]> Sat, 24 Jun 2017 18:09:34 +0700 ** Changed in: libc++ (Ubuntu Xenial) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1610168 Title: error: 'basic_string<_CharT, _Traits, _Allocator>' is missing exception specification Status in libc++ package in Ubuntu: Fix Released Status in libc++ source package in Xenial: Fix Released Status in libc++ package in Debian: Fix Released Bug description: This is mirroring Debian bug #808086 https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=808086 Compiling any source file that includes <string> with clang 3.8 and -std=c++11 -stdlib=libc++ results in a compile error. While this is a minor bug in Debian (as it doesn't ship 3.8 yet), xenial does, and that's a major problem as it makes libc++ useless. clang: warning: argument unused during compilation: '-stdlib=libc++' In file included from test.cpp:1: In file included from /usr/include/c++/v1/iostream:38: In file included from /usr/include/c++/v1/ios:216: In file included from /usr/include/c++/v1/__locale:15: /usr/include/c++/v1/string:1938:44: error: 'basic_string<_CharT, _Traits, _Allocator>' is missing exception specification 'noexcept(is_nothrow_copy_constructible<allocator_type>::value)' basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) ^ /usr/include/c++/v1/string:1326:76: note: previous declaration is here __attribute__ ((__visibility__("hidden"), __always_inline__)) explicit basic_string(const allocator_type& __a) ^ 1 error generated. -- Update (30 Aug 2017): as per https://wiki.ubuntu.com/StableReleaseUpdates : [Impact] This bug makes it impossible to compile any C++11 source file that includes <string> with clang 3.8 using libc++. Any non-trivial C++11 codebase is affected, making the whole libc++ package useless. [Test Case] See above. Create a C++ file that simply contains #include <string> and compile it with clang++ -std=c++11 -stdlib=libc++ file.cpp. [Regression Potential] The current <string> header simply does not work with clang-3.8 under any condition, so there is no regression potential. The regression potential for GCC is also extremely limited: no package whatsoever uses GCC in combination with libc++, and the fact that GCC 5.4 -- currently in Xenial -- does not detect the error that Clang detects is just showing that GCC is bugged in this regard. [Other Info] The patch/workaround fixes the problem. See also the discussion at the linked Debian bug report as well as https://stackoverflow.com/q/37096062 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libc++/+bug/1610168/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : [email protected] Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
