Fix to allocation stub invalidation: we cannot just remove it as it will be collected even though c…

runtime/vm/code_generator.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 1360 matching lines @@
   }
   const Instructions& instrs =
       Instructions::Handle(isolate, caller_code.instructions());
   {
     WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size());
     CodePatcher::PatchStaticCallAt(frame->pc(),
                                    caller_code,
                                    alloc_stub.EntryPoint());
   }
   if (FLAG_trace_patching) {
-    OS::PrintErr("FixAllocationStubTarget: caller %#" Px " "
+    OS::PrintErr("FixAllocationStubTarget: caller %#" Px " alloc-class %s "
         " -> %#" Px "\n",
         frame->pc(),
+        alloc_class.ToCString(),
         alloc_stub.EntryPoint());
   }
   arguments.SetReturn(alloc_stub);
 }
 
 
 const char* DeoptReasonToCString(ICData::DeoptReasonId deopt_reason) {
   switch (deopt_reason) {
 #define DEOPT_REASON_TO_TEXT(name) case ICData::kDeopt##name: return #name;
 DEOPT_REASONS(DEOPT_REASON_TO_TEXT)
@@ skipping 227 matching lines @@
   field.RecordStore(value);
 }
 
 
 DEFINE_RUNTIME_ENTRY(InitStaticField, 1) {
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   field.EvaluateInitializer();
 }
 
 }  // namespace dart