[Bug libstdc++/51181] [4.7 regression] libstdc++.so __sync_sub_and_fetch_4 linkage error causing many test suite failures on m68k-linux

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51181

John David Anglin <danglin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-11-17
                 CC|                            |danglin at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> 2011-11-17 
20:54:31 UTC ---
Also seen on hppa64-hp-hpux11.11.  There is no hardware or kernel
support for compare and swap as far as I know on HP PARISC.  Thus
the best that can be done is a mutex implementation.