src/hotspot/share/code/relocInfo.cpp

 bool opt_virtual_call_Relocation::clear_inline_cache() {
   // No stubs for ICs
   // Clean IC
   ResourceMark rm;
   CompiledIC* icache = CompiledIC_at(this);
-  guarantee(icache->set_to_clean(), "opt_virtual_call cleaning should never fail");
+  guarantee(icache->set_to_clean(),
+            "Should not need transition stubs");
   return true;
 }
 
 
 address opt_virtual_call_Relocation::static_stub(bool is_aot) {

@@ -717,11 +718,12
 }
 
 bool static_call_Relocation::clear_inline_cache() {
   // Safe call site info
   CompiledStaticCall* handler = this->code()->compiledStaticCall_at(this);
-  guarantee(handler->set_to_clean(), "CompiledStaticCall cleaning should not fail");
+  guarantee(handler->set_to_clean(),
+            "Should not need transition stubs");
   return true;
 }
 
 
 address static_call_Relocation::static_stub(bool is_aot) {