Merge 6006:6095 from bleeding_edge to experimental/gc branch.

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 6095)
+++ src/api.cc	(working copy)
@@ -3127,14 +3127,15 @@
     // using StringInputBuffer or Get(i) to access the characters.
     str->TryFlatten();
   }
-  int end = length;
-  if ( (length == -1) || (length > str->length() - start) )
-    end = str->length() - start;
+  int end = start + length;
+  if ((length == -1) || (length > str->length() - start) )
+    end = str->length();
   if (end < 0) return 0;
   i::String::WriteToFlat(*str, buffer, start, end);
-  if (length == -1 || end < length)
-    buffer[end] = '\0';
-  return end;
+  if (length == -1 || end - start < length) {
+    buffer[end - start] = '\0';
+  }
+  return end - start;
 }
 
 
@@ -3801,6 +3802,35 @@
 }
 
 
+void v8::Date::DateTimeConfigurationChangeNotification() {
+  ON_BAILOUT("v8::Date::DateTimeConfigurationChangeNotification()", return);
+  LOG_API("Date::DateTimeConfigurationChangeNotification");
+  ENTER_V8;
+
+  HandleScope scope;
+
+  // Get the function ResetDateCache (defined in date-delay.js).
+  i::Handle<i::String> func_name_str =
+      i::Factory::LookupAsciiSymbol("ResetDateCache");
+  i::MaybeObject* result = i::Top::builtins()->GetProperty(*func_name_str);
+  i::Object* object_func;
+  if (!result->ToObject(&object_func)) {
+    return;
+  }
+
+  if (object_func->IsJSFunction()) {
+    i::Handle<i::JSFunction> func =
+        i::Handle<i::JSFunction>(i::JSFunction::cast(object_func));
+
+    // Call ResetDateCache(0 but expect no exceptions:
+    bool caught_exception = false;
+    i::Handle<i::Object> result =
+        i::Execution::TryCall(func, i::Top::builtins(), 0, NULL,
+        &caught_exception);
+  }
+}
+
+
 static i::Handle<i::String> RegExpFlagsToString(RegExp::Flags flags) {
   char flags_buf[3];
   int num_flags = 0;
@@ -4978,6 +5008,7 @@
 }
 
 int Testing::GetStressRuns() {
+  if (internal::FLAG_stress_runs != 0) return internal::FLAG_stress_runs;
 #ifdef DEBUG
   // In debug mode the code runs much slower so stressing will only make two
   // runs.