Re: [Boost-bugs] [Boost C++ Libraries] #2525: More architectures that do not support __sync_fetch_and_add_4

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2525: More architectures that do not support __sync_fetch_and_add_4
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-03-09 03:15:28

#2525: More architectures that do not support __sync_fetch_and_add_4
----------------------------------------------+-----------------------------
  Reporter:  Steven Robbins <smr_at_[hidden]>  |       Owner:  pdimov   
      Type:  Bugs                             |      Status:  reopened 
 Milestone:  Boost 1.39.0                     |   Component:  smart_ptr
   Version:  Boost 1.37.0                     |    Severity:  Problem  
Resolution:                                   |    Keywords:           
----------------------------------------------+-----------------------------

Comment(by smr_at_[hidden]):

 On the sparc to which I have access (a sparc64 running Debian Linux), I
 can attest that g++ 4.2 does *not* have all the !__sync primitives used in
 Boost.  I created a test program using all the primitives I could find
 with "rgrep !__sync_ *" in the Boost root source directory (SVN head).

 Here is the transcript.

 {{{
 (sid)smr_at_smetana:~$ uname -a
 Linux smetana 2.6.26-1-sparc64-smp #1 SMP Sat Jan 10 18:53:17 UTC 2009
 sparc64 GNU/Linux

 (sid)smr_at_smetana:~$ cat sync-primitives.cc
 /* Test that uses all the __sync primitives found
    by grepping the boost sources.
 */

 int main( int ac, char* av[] )
 {
     long value = 0;

     __sync_lock_release( &value );

     return __sync_fetch_and_add( &value, 1 )
         +  __sync_val_compare_and_swap( &value, 1, 2 )
         +  __sync_add_and_fetch( &value, 1 )
         +  __sync_lock_test_and_set( &value, 1 );
 }

 (sid)smr_at_smetana:~$ g++-4.1 sync-primitives.cc
 /tmp/ccGOFRyI.o: In function `main':
 sync-primitives.cc:(.text+0x24): undefined reference to
 `__sync_fetch_and_add_4'
 sync-primitives.cc:(.text+0x44): undefined reference to
 `__sync_val_compare_and_swap_4'
 sync-primitives.cc:(.text+0x60): undefined reference to
 `__sync_add_and_fetch_4'
 sync-primitives.cc:(.text+0x7c): undefined reference to
 `__sync_lock_test_and_set_4'
 collect2: ld returned 1 exit status

 (sid)smr_at_smetana:~$ g++-4.2 sync-primitives.cc
 /tmp/ccQg4NKe.o: In function `main':
 sync-primitives.cc:(.text+0x28): undefined reference to
 `__sync_fetch_and_add_4'
 sync-primitives.cc:(.text+0x48): undefined reference to
 `__sync_val_compare_and_swap_4'
 sync-primitives.cc:(.text+0x64): undefined reference to
 `__sync_add_and_fetch_4'
 collect2: ld returned 1 exit status

 (sid)smr_at_smetana:~$ g++-4.3 sync-primitives.cc
 /tmp/cc8anhqk.o: In function `main':
 sync-primitives.cc:(.text+0x28): undefined reference to
 `__sync_fetch_and_add_4'
 sync-primitives.cc:(.text+0x48): undefined reference to
 `__sync_val_compare_and_swap_4'
 sync-primitives.cc:(.text+0x64): undefined reference to
 `__sync_add_and_fetch_4'
 collect2: ld returned 1 exit status
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2525#comment:6>
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