diff --git a/src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp b/src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp
index 2e4eb9bbbed..3e5e6b5b139 100644
--- a/src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp
+++ b/src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp
@@ -55,9 +55,10 @@ inline T Atomic::PlatformXchg<byte_size>::operator()(T volatile* dest,
   return res;
 }
 
+// __attribute__((unused)) on dest is to get rid of spurious GCC warnings.
 template<size_t byte_size>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<byte_size>::operator()(T volatile* dest,
+inline T Atomic::PlatformCmpxchg<byte_size>::operator()(T volatile* dest __attribute__((unused)),
                                                         T compare_value,
                                                         T exchange_value,
                                                         atomic_memory_order order) const {