Stop throwing exceptions for out-of-range accesses to CanvasArrays....

test/cctest/test-api.cc

 // Copyright 2007-2009 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 8178 matching lines @@
                       "  tmp_array[i] = i;"
                       "  sum += tmp_array[i];"
                       "  if (i == 4) {"
                       "    tmp_array = {};"
                       "  }"
                       "}"
                       "sum;");
   i::Heap::CollectAllGarbage(false);  // Force GC to trigger verification.
   CHECK_EQ(28, result->Int32Value());
 
-  // Check out-of-range loads.
+  // Make sure out-of-range loads do not throw.
   i::OS::SNPrintF(test_buf,
                   "var caught_exception = false;"
                   "try {"
                   "  ext_array[%d];"
                   "} catch (e) {"
                   "  caught_exception = true;"
                   "}"
                   "caught_exception;",
                   kElementCount);
   result = CompileRun(test_buf.start());
-  CHECK_EQ(true, result->BooleanValue());
+  CHECK_EQ(false, result->BooleanValue());
 
-  // Check out-of-range stores.
+  // Make sure out-of-range stores do not throw.
   i::OS::SNPrintF(test_buf,
                   "var caught_exception = false;"
                   "try {"
                   "  ext_array[%d] = 1;"
                   "} catch (e) {"
                   "  caught_exception = true;"
                   "}"
                   "caught_exception;",
                   kElementCount);
   result = CompileRun(test_buf.start());
-  CHECK_EQ(true, result->BooleanValue());
+  CHECK_EQ(false, result->BooleanValue());
 
   // Check other boundary conditions, values and operations.
   result = CompileRun("for (var i = 0; i < 8; i++) {"
                       "  ext_array[7] = undefined;"
                       "}"
                       "ext_array[7];");
   CHECK_EQ(0, result->Int32Value());
   CHECK_EQ(0, static_cast<int>(jsobj->GetElement(7)->Number()));
 
   result = CompileRun("for (var i = 0; i < 8; i++) {"
@@ skipping 254 matching lines @@
 THREADED_TEST(GetHeapStatistics) {
   v8::HandleScope scope;
   LocalContext c1;
   v8::HeapStatistics heap_statistics;
   CHECK_EQ(heap_statistics.total_heap_size(), 0);
   CHECK_EQ(heap_statistics.used_heap_size(), 0);
   v8::V8::GetHeapStatistics(&heap_statistics);
   CHECK_NE(heap_statistics.total_heap_size(), 0);
   CHECK_NE(heap_statistics.used_heap_size(), 0);
 }