[PATCH] [Committed] Fix PR libstdc++/13480 warning in i386's atomicity.h

[Andrew Pinski]

It looks like Jason forgot to update the i386's atomicity.h for the new 
warning.
This fixes the warning, I committed as obvious.

Thanks,
Andrew Pinski

ChangeLog:

* cpu/i386/atomicity.h (__exchange_and_add): Make memory I/O explicit.

Patch:
Index: atomicity.h
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/config/cpu/i386/atomicity.h,v
retrieving revision 1.8
diff -u -p -r1.8 atomicity.h
--- atomicity.h	10 Dec 2003 04:52:35 -0000	1.8
+++ atomicity.h	25 Dec 2003 01:55:44 -0000
@@ -52,8 +52,9 @@ __exchange_and_add(volatile _Atomic_word
    /* obtain the atomic exchange/add spin lock */
    do {
      __asm__ __volatile__ ("xchg{l} {%0,%1|%1,%0}"
-			  : "+m" (__Atomicity_lock<0>::_S_atomicity_lock),
-			    "+r" (__tmp));
+			  : "m" (__Atomicity_lock<0>::_S_atomicity_lock),
+			    "+r" (__tmp)
+                          : "m" 
(__Atomicity_lock<0>::_S_atomicity_lock));
    } while (__tmp);

    __result = *__mem;