Create v8::HandleScope outside the while loop of RunShell().

samples/shell.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 228 matching lines @@
       }
       if (!ExecuteString(source, file_name, false, true)) return 1;
     }
   }
   return 0;
 }
 
 
 // The read-eval-execute loop of the shell.
 void RunShell(v8::Handle<v8::Context> context) {
+  // Enter the execution environment before evaluating any code.
+  v8::HandleScope handle_scope;
+  v8::Context::Scope context_scope(context);
+  v8::Local<v8::String> name(v8::String::New("(shell)"));
+
   printf("V8 version %s [sample shell]\n", v8::V8::GetVersion());
   static const int kBufferSize = 256;
-  // Enter the execution environment before evaluating any code.
-  v8::Context::Scope context_scope(context);
-  v8::Local<v8::String> name(v8::String::New("(shell)"));
   while (true) {
     char buffer[kBufferSize];
     printf("> ");
     char* str = fgets(buffer, kBufferSize, stdin);
     if (str == NULL) break;
-    v8::HandleScope handle_scope;
     ExecuteString(v8::String::New(str), name, true, true);
   }
   printf("\n");
 }
 
 
 // Executes a string within the current v8 context.
 bool ExecuteString(v8::Handle<v8::String> source,
                    v8::Handle<v8::Value> name,
                    bool print_result,
@@ skipping 58 matching lines @@
       printf("^");
     }
     printf("\n");
     v8::String::Utf8Value stack_trace(try_catch->StackTrace());
     if (stack_trace.length() > 0) {
       const char* stack_trace_string = ToCString(stack_trace);
       printf("%s\n", stack_trace_string);
     }
   }
 }