Date: Sun, 1 Apr 2018 11:44:01 -0700 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: wjw@digiware.nl, freebsd-toolchain@freebsd.org Subject: Re: Looking for std::map::merge when compiling for Clang... Message-ID: <E77AA8D3-FE3C-4E27-AC33-9F5D4044A034@yahoo.com>
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Willem Jan Withagen wjw at digiware.nl wrote on Sun Apr 1 12:19:35 UTC 2018 : > I'm trying to compile a src file with Ceph that has been upgrade to use > more of the C++17 features, but it fails on a missing function: > > /home/jenkins/workspace/ceph-master/src/mds/OpenFileTable.cc:349:26: > error: no member named 'merge' in > 'std::__1::map<std::__1::basic_string<char>, ceph::buffer::list, > std::__1::less<std::__1::basic_string<char> >, > std::__1::allocator<std::__1::pair<const std::__1::basic_string<char>, > ceph::buffer::list> > >' > ctl.journaled_update.merge(ctl.to_update); > ~~~~~~~~~~~~~~~~~~~~ ^ If you can get ahold of the text for the compile command, it would be a good idea to send that out as additional information. A point about clang as a standard in FreeBSD, with the system and ports there are many alternatives. (Although having some level of C++17 support does cut down the size of the list.) In a C++17 context: #include <map> should have defined merge for std::map. The error message suggests complete lack of a definition, rather than an unsupported type of argument (overload mismatch) or other such. Such might be because the compile did not indicate to use C++17 --or some other point that is outside OpenFileTable.cc . See the command that generated the error would likely help with identifying the proper context for fixing the issue. === Mark Millard marklmi26-fbsd at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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