(atomic_add): Fix test for using atomic_decrement.

diff --git a/sysdeps/i386/i486/bits/atomic.h b/sysdeps/i386/i486/bits/atomic.h
index cb2fcdb..9587eaa 100644 (file)
--- a/sysdeps/i386/i486/bits/atomic.h
+++ b/sysdeps/i386/i486/bits/atomic.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -169,7 +169,7 @@ typedef uintmax_t uatomic_max_t;
 #define atomic_add(mem, value) \
   (void) ({ if (__builtin_constant_p (value) && (value) == 1)                \
              atomic_increment (mem);                                         \
-           else if (__builtin_constant_p (value) && (value) == 1)            \
+           else if (__builtin_constant_p (value) && (value) == -1)           \
              atomic_decrement (mem);                                         \
            else if (sizeof (*mem) == 1)                                      \
              __asm __volatile (LOCK_PREFIX "addb %b1, %0"                    \