Always fail when trying to store to an undeclared global variable, even if it was found.

test/cctest/test-global-object.cc

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-// Flags: --allow-natives-syntax
+#include "v8.h"
 
-function foo(word, nBits) {
-  return (word[1] >>> nBits) | (word[0] << (32 - nBits));
+#include "cctest.h"
+
+using namespace v8;
+
+// This test fails if properties on the prototype of the global object appear
+// as declared globals.
+TEST(StrictUndeclaredGlobalVariable) {
+  HandleScope scope;
+  v8::Local<v8::String> var_name = v8_str("x");
+  v8::Local<v8::String> result_name = v8_str("z");
+  LocalContext context;
+  v8::Local<v8::Script> script =
+      v8_compile("\"use strict\";"
+                 "var z;"
+                 "try { x = 42; z = 10; } catch (e) { z = 20; };");

[Jakob Kummerow, 2013/01/23 15:51:25]

Would be nice to assert that we're getting the right kind of exception here.

[Toon Verwaest, 2013/01/23 16:03:53]

Done.

+  v8::Handle<v8::Object> proto = v8::Object::New();
+  v8::Handle<v8::Object> global =
+      context->Global()->GetPrototype().As<v8::Object>();
+  proto->Set(var_name, v8_num(100));
+  global->SetPrototype(proto);
+  script->Run();
+  v8::Local<v8::Value> result = context->Global()->Get(result_name);
+  CHECK_EQ(20, result->Int32Value());
 }
-
-word = [0x1001, 0];
-
-var expected = foo(word, 1);
-foo(word, 1);
-%OptimizeFunctionOnNextCall(foo);
-var optimized = foo(word, 1);
-assertEquals(expected, optimized)