| Index: dart/runtime/vm/native_symbol_win.cc | 
| =================================================================== | 
| --- dart/runtime/vm/native_symbol_win.cc	(revision 31530) | 
| +++ dart/runtime/vm/native_symbol_win.cc	(working copy) | 
| @@ -47,7 +47,7 @@ | 
| } | 
|  | 
|  | 
| -char* NativeSymbolResolver::LookupSymbolName(uintptr_t pc) { | 
| +char* NativeSymbolResolver::LookupSymbolName(uintptr_t pc, uintptr_t* start) { | 
| static const intptr_t kMaxNameLength = 2048; | 
| static const intptr_t kSymbolInfoSize = sizeof(SYMBOL_INFO);  // NOLINT. | 
| static char buffer[kSymbolInfoSize + kMaxNameLength]; | 
| @@ -56,6 +56,9 @@ | 
| if (!running_) { | 
| return NULL; | 
| } | 
| +  if (start != NULL) { | 
| +    *start = NULL; | 
| +  } | 
| #if 0 | 
| memset(&buffer[0], 0, sizeof(buffer)); | 
| HANDLE hProcess = GetCurrentProcess(); | 
|  |