diff -r eb954a4b6083 -r 703813b05838 src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
--- a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp	Mon Sep 24 18:44:39 2018 +0200
+++ b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp	Mon Sep 24 18:19:46 2018 +0100
@@ -782,6 +782,9 @@
 
   void resolve_jobject(Register value, Register thread, Register tmp);
 
+  // C 'boolean' to Java boolean: x == 0 ? 0 : 1
+  void c2bool(Register x);
+
   // oop manipulations
   void load_klass(Register dst, Register src);
   void store_klass(Register dst, Register src);