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Hi!
While looking at catomic_* definitions I've noticed that even if
bits/atomic.h defined catomic_compare_and_exchange_val_acq, include/atomic.h
would override it anyway.
2009-05-12 Jakub Jelinek <jakub@redhat.com>
* include/atomic.h: Formatting.
(catomic_compare_and_exchange_val_acq): Don't define if already
defined by bits/atomic.h.
--- libc/include/atomic.h.jj 2009-02-16 14:47:25.000000000 +0100
+++ libc/include/atomic.h 2009-05-12 09:58:22.000000000 +0200
@@ -95,14 +95,15 @@
#endif
-#if !defined catomic_compare_and_exchange_val_acq \
- && defined __arch_c_compare_and_exchange_val_32_acq
-# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+#ifndef catomic_compare_and_exchange_val_acq
+# ifdef __arch_c_compare_and_exchange_val_32_acq
+# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
__atomic_val_bysize (__arch_c_compare_and_exchange_val,acq, \
mem, newval, oldval)
-#else
-# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+# else
+# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
atomic_compare_and_exchange_val_acq (mem, newval, oldval)
+# endif
#endif
@@ -125,8 +126,8 @@
# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
__atomic_bool_bysize (__arch_compare_and_exchange_bool,acq, \
mem, newval, oldval)
-# else
-# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
+# else
+# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
({ /* Cannot use __oldval here, because macros later in this file might \
call this macro with __oldval argument. */ \
__typeof (oldval) __atg3_old = (oldval); \
@@ -142,8 +143,8 @@
# define catomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
__atomic_bool_bysize (__arch_c_compare_and_exchange_bool,acq, \
mem, newval, oldval)
-# else
-# define catomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
+# else
+# define catomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
({ /* Cannot use __oldval here, because macros later in this file might \
call this macro with __oldval argument. */ \
__typeof (oldval) __atg4_old = (oldval); \
Jakub
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