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Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/atomic-machine.h')
-rw-r--r--sysdeps/unix/sysv/linux/nios2/atomic-machine.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/nios2/atomic-machine.h b/sysdeps/unix/sysv/linux/nios2/atomic-machine.h
index 6111ccf886..d4dd025603 100644
--- a/sysdeps/unix/sysv/linux/nios2/atomic-machine.h
+++ b/sysdeps/unix/sysv/linux/nios2/atomic-machine.h
@@ -34,6 +34,9 @@ typedef uintmax_t uatomic_max_t;
 #define __HAVE_64B_ATOMICS 0
 #define USE_ATOMIC_COMPILER_BUILTINS 0
 
+/* XXX Is this actually correct?  */
+#define ATOMIC_EXCHANGE_USES_CAS 1
+
 #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval)	\
   (abort (), (__typeof (*mem)) 0)
 #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval)	\