Fix linux build

runtime/vm/object.cc

 // Copyright (c) 2011, 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/object.h"
 
 #include "vm/assembler.h"
 #include "vm/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 4403 matching lines @@
 }
 
 
 void PcDescriptors::SetLength(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   raw_ptr()->length_ = Smi::New(value);
 }
 
 
-intptr_t PcDescriptors::PC(intptr_t index) const {
-  return *(EntryAddr(index, kPcEntry));
+uword PcDescriptors::PC(intptr_t index) const {
+  return static_cast<uword>(*(EntryAddr(index, kPcEntry)));
 }
 
 
-void PcDescriptors::SetPC(intptr_t index, intptr_t value) const {
-  *(EntryAddr(index, kPcEntry)) = value;
+void PcDescriptors::SetPC(intptr_t index, uword value) const {
+  *(EntryAddr(index, kPcEntry)) = static_cast<intptr_t>(value);
 }
 
 
 PcDescriptors::Kind PcDescriptors::DescriptorKind(intptr_t index) const {
   return static_cast<PcDescriptors::Kind>(*(EntryAddr(index, kKindEntry)));
 }
 
 
 void PcDescriptors::SetKind(intptr_t index, PcDescriptors::Kind value) const {
   *(EntryAddr(index, kKindEntry)) = value;
@@ skipping 243 matching lines @@
 
 void Code::set_ic_data(const Array& ic_data) const {
   ASSERT(!ic_data.IsNull());
   StorePointer(&raw_ptr()->ic_data_, ic_data.raw());
 }
 
 intptr_t Code::GetTokenIndexOfPC(uword pc) const {
   intptr_t token_index = -1;
   const PcDescriptors& descriptors = PcDescriptors::Handle(pc_descriptors());
   for (intptr_t i = 0; i < descriptors.Length(); i++) {
-    if (static_cast<uword>(descriptors.PC(i)) == pc) {
+    if (descriptors.PC(i) == pc) {
       token_index = descriptors.TokenIndex(i);
       break;
     }
   }
   return token_index;
 }
 
 
 uword Code::GetDeoptPcAtNodeId(intptr_t node_id) const {
   const PcDescriptors& descriptors = PcDescriptors::Handle(pc_descriptors());
@@ skipping 2578 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart