On Wed, 21 Aug 2019 18:52:31 +0300 Konstantin Belousov
<kostik...@gmail.com> wrote:
> On Wed, Aug 21, 2019 at 02:49:08PM +0200, Tijl Coosemans wrote:
>> On Tue, 20 Aug 2019 17:39:33 +0000 (UTC) Dimitry Andric
>> <d...@freebsd.org> wrote:  
>>> Author: dim
>>> Date: Tue Aug 20 17:39:32 2019
>>> New Revision: 351253
>>> URL: https://svnweb.freebsd.org/changeset/base/351253
>>> 
>>> Log:
>>>   Pull in r368867 from upstream libc++ trunk (by Marshall Clow):
>>>   
>>>     Rework recursive_timed_mutex so that it uses __thread_id instead of
>>>     using the lower-level __libcpp_thread_id. This is prep for fixing
>>>     PR42918. Reviewed as https://reviews.llvm.org/D65895
>>>   
>>>   Pull in r368916 from upstream libc++ trunk (by Marshall Clow):
>>>   
>>>     Fix thread comparison by making sure we never pass our special 'not a
>>>     thread' value to the underlying implementation. Fixes PR#42918.
>>>   
>>>   This should fix std::thread::id::operator==() attempting to call
>>>   pthread_equal(3) with zero values.
>>>   
>>>   Reported by:      and...@tao11.riddles.org.uk
>>>   PR:               239038, 239550
>>>   MFC after:        3 days
>>> 
>>> Modified:
>>>   head/contrib/libc++/include/__threading_support
>>>   head/contrib/libc++/include/mutex
>>>   head/contrib/libc++/include/thread
>>>   head/contrib/libc++/src/mutex.cpp
>>> 
>>> Modified: head/contrib/libc++/include/__threading_support
>>> ==============================================================================
>>> --- head/contrib/libc++/include/__threading_support Tue Aug 20 17:00:31 
>>> 2019        (r351252)
>>> +++ head/contrib/libc++/include/__threading_support Tue Aug 20 17:39:32 
>>> 2019        (r351253)
>>> @@ -13,6 +13,7 @@
>>>  
>>>  #include <__config>
>>>  #include <chrono>
>>> +#include <iosfwd>
>>>  #include <errno.h>
>>>  
>>>  #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
>>> @@ -392,6 +393,86 @@ int __libcpp_tls_set(__libcpp_tls_key __key, void *__p
>>>  }
>>>  
>>>  #endif // !_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL || 
>>> _LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL
>>> +
>>> +class _LIBCPP_TYPE_VIS thread;  
>> 
>> This seems to break building Firefox:
>> 
>> In file included from 
>> /usr/ports/www/firefox/work/firefox-68.0.2/media/mtransport/nricectx.cpp:82:
>> In file included from 
>> /usr/ports/www/firefox/work/firefox-68.0.2/media/mtransport/third_party/nICEr/src/stun/stun_client_ctx.h:41:
>> In file included from 
>> /usr/ports/www/firefox/work/firefox-68.0.2/media/mtransport/third_party/nICEr/src/stun/stun.h:45:
>> In file included from /usr/include/net/if_var.h:84:
>> /usr/include/sys/lock.h:68:15: error: reference to 'thread' is ambiguous
>>                             struct thread **owner);
>>                                    ^
>> /usr/include/sys/lock.h:42:8: note: candidate found by name lookup is 
>> 'thread'
>> struct thread;
>>        ^
>> /usr/include/c++/v1/__threading_support:397:24: note: candidate found by name
>>       lookup is 'std::__1::thread'
>> class _LIBCPP_TYPE_VIS thread;
>>                        ^
>> 
>> 
>> This "class thread" conflicts with "struct thread" in sys/lock.h.
>> Should everything in sys/lock.h be under #ifdef _KERNEL?  
> Why does firefox pulls if_var.h at all ?  (As I understand, this is how
> the pollution occurs.)

Right, it turns out it doesn't need it:

--- media/mtransport/third_party/nICEr/src/stun/stun.h.orig     2019-08-13 
18:06:44 UTC
+++ media/mtransport/third_party/nICEr/src/stun/stun.h
@@ -41,7 +41,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY O
 #include <sys/socket.h>
 #ifndef LINUX
 #include <net/if.h>
-#if !defined(__OpenBSD__) && !defined(__NetBSD__)
+#if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
 #include <net/if_var.h>
 #endif
 #include <net/if_dl.h>
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