[cfe-dev] libcxx fails to build with g++ as of version 4.9.0

Marshall Clow mclow.lists at gmail.com
Wed Apr 30 12:36:47 PDT 2014 

On Apr 29, 2014, at 4:42 PM, G M <gmisocpp at gmail.com> wrote:

> Hi Marshall
> 
> I'm just drawing your attention to this since I think you might have missed it in your lists inbox.
> I probably should have just posted it here to begin with. Sorry.

Actually, I did see it; but it took me a couple days to get a 4.9 install.
But thanks for sending it to me and posting it here.

— Marshall


> 
> Thanks
> 
> ---------- Forwarded message ----------
> 
> 
> Hi Marshall
> 
> I thought you might want to know that libcxx has stopped being buildable with g++ as of 4.9.0.
> The error output of the build is shown below.
> 
> The main error is:
> 
> c:/libcxx/include/string:1895:1: error: inlining failed in call to always_inline 'std::__1::basic_string<_CharT, _Traits,
> _Allocator>::basic_string() [with _CharT = char; _Traits = std::__1::char_traits<char>; _Allocator = std::__1::allocator<c
> har>]': function body not available
> 
> Look for it in the full error output shown below.
> 
> If you need me to try out a patch, let me know. Sorry if I end up being a little slow in replying though, I don't always follow so closely these days.
> If I don't hear anything in a day or two, I'll post this on cfe-dev, assuming you've missed this email in the list deluge.
> 
> Thanks.
> 
> 
> c:\libcxx_build>ninja
> [10/29] Building CXX object lib/CMakeFiles/cxx.dir/__/src/exception.cpp.obj
> c:/libcxx/src/exception.cpp:118:9: warning: #warning is a GCC extension
>  #       warning uncaught_exception not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:118:9: warning: #warning uncaught_exception not yet implemented [-Wcpp]
> c:/libcxx/src/exception.cpp:191:9: warning: #warning is a GCC extension
>  #       warning exception_ptr not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:191:9: warning: #warning exception_ptr not yet implemented [-Wcpp]
> c:/libcxx/src/exception.cpp:210:9: warning: #warning is a GCC extension
>  #       warning exception_ptr not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:210:9: warning: #warning exception_ptr not yet implemented [-Wcpp]
> c:/libcxx/src/exception.cpp:235:9: warning: #warning is a GCC extension
>  #       warning exception_ptr not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:235:9: warning: #warning exception_ptr not yet implemented [-Wcpp]
> c:/libcxx/src/exception.cpp:279:9: warning: #warning is a GCC extension
>  #       warning exception_ptr not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:279:9: warning: #warning exception_ptr not yet implemented [-Wcpp]
> c:/libcxx/src/exception.cpp:301:9: warning: #warning is a GCC extension
>  #       warning exception_ptr not yet implemented
>          ^
> c:/libcxx/src/exception.cpp:301:9: warning: #warning exception_ptr not yet implemented [-Wcpp]
> [22/29] Building CXX object lib/CMakeFiles/cxx.dir/__/src/ios.cpp.obj
> FAILED: \mingw\bin\g++.exe    -pipe -march=native -O3 -fno-exceptions -std=c++1y -nostdinc++ -std=c++0x -Werror=return-typ
> e -Wall -W -Wno-unused-parameter -Wwrite-strings -Wno-long-long -Wno-error -pedantic -D_DEBUG -UNDEBUG -D_LIBCPP_BUILD_STA
> TIC -O3 -DNDEBUG -Ic:/libcxx/include -MMD -MT lib/CMakeFiles/cxx.dir/__/src/ios.cpp.obj -MF "lib/CMakeFiles/cxx.dir/__/src
> /ios.cpp.obj.d" -o lib/CMakeFiles/cxx.dir/__/src/ios.cpp.obj -c c:/libcxx/src/ios.cpp
> In file included from c:/libcxx/include/__locale:15:0,
>                  from c:/libcxx/include/ios:216,
>                  from c:/libcxx/src/ios.cpp:12:
> c:/libcxx/include/string: In member function '_InputIterator std::__1::num_get<_CharT, _InputIterator>::__do_get_signed(st
> d::__1::num_get<_CharT, _InputIterator>::iter_type, std::__1::num_get<_CharT, _InputIterator>::iter_type, std::__1::ios_ba
> se&, std::__1::ios_base::iostate&, _Signed&) const [with _Signed = long int; _CharT = char; _InputIterator = std::__1::ist
> reambuf_iterator<char, std::__1::char_traits<char> >; std::__1::num_get<_CharT, _InputIterator>::iter_type = std::__1::ist
> reambuf_iterator<char, std::__1::char_traits<char> >; std::__1::ios_base::iostate = unsigned int]':
> c:/libcxx/include/string:1895:1: error: inlining failed in call to always_inline 'std::__1::basic_string<_CharT, _Traits,
> _Allocator>::basic_string() [with _CharT = char; _Traits = std::__1::char_traits<char>; _Allocator = std::__1::allocator<c
> har>]': function body not available
>  basic_string<_CharT, _Traits, _Allocator>::basic_string()
>  ^
> In file included from c:/libcxx/include/ostream:133:0,
>                  from c:/libcxx/include/istream:156,
>                  from c:/libcxx/src/ios.cpp:14:
> c:/libcxx/include/locale:1006:12: error: called from here
>      string __buf;
>             ^
> [22/29] Building CXX object lib/CMakeFiles/cxx.dir/__/src/locale.cpp.obj
> FAILED: \mingw\bin\g++.exe    -pipe -march=native -O3 -fno-exceptions -std=c++1y -nostdinc++ -std=c++0x -Werror=return-typ
> e -Wall -W -Wno-unused-parameter -Wwrite-strings -Wno-long-long -Wno-error -pedantic -D_DEBUG -UNDEBUG -D_LIBCPP_BUILD_STA
> TIC -O3 -DNDEBUG -Ic:/libcxx/include -MMD -MT lib/CMakeFiles/cxx.dir/__/src/locale.cpp.obj -MF "lib/CMakeFiles/cxx.dir/__/
> src/locale.cpp.obj.d" -o lib/CMakeFiles/cxx.dir/__/src/locale.cpp.obj -c c:/libcxx/src/locale.cpp
> In file included from c:/libcxx/src/locale.cpp:18:0:
> c:/libcxx/include/string: In function 'std::__1::string* std::__1::init_weeks()':
> c:/libcxx/include/string:1895:1: error: inlining failed in call to always_inline 'std::__1::basic_string<_CharT, _Traits,
> _Allocator>::basic_string() [with _CharT = char; _Traits = std::__1::char_traits<char>; _Allocator = std::__1::allocator<c
> har>]': function body not available
>  basic_string<_CharT, _Traits, _Allocator>::basic_string()
>  ^
> c:/libcxx/src/locale.cpp:4444:27: error: called from here
>      static string weeks[14];
>                            ^
> [22/29] Building CXX object lib/CMakeFiles/cxx.dir/__/src/strstream.cpp.obj
> c:/libcxx/src/strstream.cpp: In member function 'virtual std::__1::basic_streambuf<char>::pos_type std::__1::strstreambuf:
> :seekoff(std::__1::basic_streambuf<char>::off_type, std::__1::ios_base::seekdir, std::__1::ios_base::openmode)':
> c:/libcxx/src/strstream.cpp:267:24: warning: 'newoff' may be used uninitialized in this function [-Wmaybe-uninitialized]
>          newoff += __off;
>                         ^
> [22/29] Building CXX object lib/CMakeFiles/cxx.dir/__/src/string.cpp.obj
> ninja: build stopped: subcommand failed.
> c:\libcxx_build>popd
> 
> c:\Users\GM\Downloads>notepad2 c:/libcxx/include/__locale
> 
> c:\Users\GM\Downloads>
> 
> 
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev

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