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-rw-r--r--sysdeps/arm/atomic-machine.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/arm/atomic-machine.h b/sysdeps/arm/atomic-machine.h
index eeac7f0dbd..c22d05b766 100644
--- a/sysdeps/arm/atomic-machine.h
+++ b/sysdeps/arm/atomic-machine.h
@@ -35,6 +35,7 @@ typedef uintmax_t uatomic_max_t;
 
 #define __HAVE_64B_ATOMICS 0
 #define USE_ATOMIC_COMPILER_BUILTINS 0
+#define ATOMIC_EXCHANGE_USES_CAS 1
 
 void __arm_link_error (void);