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

[Andrew Pinski]

On Dec 24, 2003, at 23:22, Jason Merrill wrote:

> On Wed, 24 Dec 2003 21:00:22 -0500, Andrew Pinski 
> <pinskia@physics.uc.edu> wrote:
>
>> It looks like Jason forgot to update the i386's atomicity.h for the 
>> new
>> warning.
>> This fixes the warning, I committed as obvious.
>
> Hmm, I wonder why I didn't notice that warning in my testing?  Thanks.


Well I messed up the patch too.
Here is a patch which I committed to fix the problem.


Index: config/cpu/i386/atomicity.h
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/config/cpu/i386/atomicity.h,v
retrieving revision 1.9
diff -u -p -r1.9 atomicity.h
--- config/cpu/i386/atomicity.h	25 Dec 2003 02:04:06 -0000	1.9
+++ config/cpu/i386/atomicity.h	25 Dec 2003 04:25:58 -0000
@@ -52,7 +52,7 @@ __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),
+			  : "=m" (__Atomicity_lock<0>::_S_atomicity_lock),
  			    "+r" (__tmp)
                            : "m" 
(__Atomicity_lock<0>::_S_atomicity_lock));
    } while (__tmp);