src/hotspot/share/code/compiledIC.hpp

   // Note: We do not provide any direct access to the stub code, to prevent parts of the code
   // to manipulate the inline cache in MT-unsafe ways.
   //
   // They all takes a TRAP argument, since they can cause a GC if the inline-cache buffer is full.
   //
-  void set_to_clean(bool in_use = true);
-  void set_to_monomorphic(CompiledICInfo& info);
+  bool set_to_clean(bool in_use = true);
+  bool set_to_monomorphic(CompiledICInfo& info);
   void clear_ic_stub();
 
   // Returns true if successful and false otherwise. The call can fail if memory
   // allocation in the code cache fails.
   bool set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS);

@@ -370,11 +370,11
 public:
   // Clean static call (will force resolving on next use)
   virtual address destination() const = 0;
 
   // Clean static call (will force resolving on next use)
-  void set_to_clean(bool in_use = true);
+  bool set_to_clean(bool in_use = true);
 
   // Set state. The entry must be the same, as computed by compute_entry.
   // Computation and setting is split up, since the actions are separate during
   // a OptoRuntime::resolve_xxx.
   void set(const StaticCallInfo& info);