[cfe-dev] Errors compiling libc++

[Howard Hinnant]

On May 19, 2011, at 9:09 PM, Ron Santos wrote:

> Folks,
> I just checked out libc++ revision 131708 a few minutes and tried to build with clang 3.0.
> 
> $ clang++ -v
> clang version 3.0 (trunk 131637)
> Target: x86_64-apple-darwin10.7.0
> Thread model: posix
> 
> I downloaded the helper libs and exported TRIPLE.  I get the errors below.  Am I doing something wrong?  Is this expected?  Thanks for your help.  I want to play around with some C++0x features so I decided to use clang and libc++.
> 
> - ron
> 
> $ ./buildit
> + for FILE in '../src/*.cpp'
> + clang++ -c -g -Os -arch i386 -arch x86_64 -std=c++0x -U__STRICT_ANSI__ -nostdinc++ -I../include ../src/algorithm.cpp
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:130:
> In file included from ../include/ios:216:
> ../include/__locale:197:5: error: exception specification of overriding function is more lax than base version
>     ~collate();
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> ../include/__locale:208:18: error: exception specification of overriding function is more lax than base version
> collate<_CharT>::~collate()
>                  ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:130:
> ../include/ios:591:13: error: exception specification of overriding function is more lax than base version
>     virtual ~basic_ios();
>             ^
> ../include/ios:295:13: note: overridden virtual function is here
>     virtual ~ios_base();
>             ^
> ../include/ios:649:29: error: exception specification of overriding function is more lax than base version
> basic_ios<_CharT, _Traits>::~basic_ios()
>                             ^
> ../include/ios:295:13: note: overridden virtual function is here
>     virtual ~ios_base();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:710:5: error: exception specification of overriding function is more lax than base version
>     ~num_get() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:1457:5: error: exception specification of overriding function is more lax than base version
>     ~num_put() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:1885:5: error: exception specification of overriding function is more lax than base version
>     ~time_get() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:2550:5: error: exception specification of overriding function is more lax than base version
>     ~time_put() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:2684:5: error: exception specification of overriding function is more lax than base version
>     ~moneypunct() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:2855:5: error: exception specification of overriding function is more lax than base version
>     ~money_get() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:3386:5: error: exception specification of overriding function is more lax than base version
>     ~money_put() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> In file included from ../src/algorithm.cpp:11:
> In file included from ../include/random:1645:
> In file included from ../include/istream:156:
> In file included from ../include/ostream:132:
> ../include/locale:3551:5: error: exception specification of overriding function is more lax than base version
>     ~messages() {}
>     ^
> ../include/__locale:100:13: note: overridden virtual function is here
>     virtual ~facet();
>             ^
> 12 errors generated.
> 
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This is a known problem with tip-of-trunk:

http://llvm.org/bugs/show_bug.cgi?id=9941

Howard