Pushes 0 for PC marker in runtime call stubs on ARM and MIPS.

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/bigint_operations.h"
 #include "vm/code_patcher.h"
@@ skipping 1322 matching lines @@
   if (interrupt_bits & Isolate::kVmStatusInterrupt) {
     Dart_IsolateInterruptCallback callback = isolate->VmStatsCallback();
     if (callback) {
       (*callback)();
     }
   }
 
   if (FLAG_use_osr && (interrupt_bits == 0)) {
     DartFrameIterator iterator;
     StackFrame* frame = iterator.NextFrame();
+    ASSERT(frame != NULL);
     const Function& function = Function::Handle(frame->LookupDartFunction());
     ASSERT(!function.IsNull());
     if (!CanOptimizeFunction(function, isolate)) return;
     intptr_t osr_id =
         Code::Handle(function.unoptimized_code()).GetDeoptIdForOsr(frame->pc());
     if (FLAG_trace_osr) {
       OS::Print("Attempting OSR for %s at id=%" Pd ", count=%" Pd "\n",
                 function.ToFullyQualifiedCString(),
                 osr_id,
                 function.usage_counter());
@@ skipping 345 matching lines @@
 // of the given value.
 //   Arg0: Field object;
 //   Arg1: Value that is being stored.
 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) {
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   const Object& value = Object::Handle(arguments.ArgAt(1));
   field.UpdateGuardedCidAndLength(value);
 }
 
 }  // namespace dart