Disable native symbol resolver on WindowsDisable native symbol resolver on Windows

runtime/vm/profiler.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 <cstdio>
 
 #include "platform/utils.h"
 
 #include "vm/atomic.h"
 #include "vm/isolate.h"
@@ skipping 454 matching lines @@
   const intptr_t kMaxStep = 0x1000;  // 4K.
   uword* pc = reinterpret_cast<uword*>(original_pc_);
 #define WALK_STACK
 #if defined(WALK_STACK)
   uword* fp = reinterpret_cast<uword*>(original_fp_);
   uword* previous_fp = fp;
   if (original_sp_ > original_fp_) {
     // Stack pointer should not be above frame pointer.
     return 0;
   }
-  if ((original_fp_ - original_sp_) >= kMaxStep) {
+  intptr_t gap = original_fp_ - original_sp_;
+  if (gap >= kMaxStep) {
     // Gap between frame pointer and stack pointer is
     // too large.
     return 0;
   }
   if (original_sp_ < lower_bound_) {
     // The stack pointer gives us a better lower bound than
     // the isolates stack limit.
     lower_bound_ = original_sp_;
   }
   int i = 0;
@@ skipping 40 matching lines @@
     return false;
   }
   uintptr_t cursor = reinterpret_cast<uintptr_t>(fp);
   cursor += sizeof(fp);
   bool r = cursor >= lower_bound_ && cursor < stack_upper_;
   return r;
 }
 
 
 }  // namespace dart