Allocate as many object-literal properties as possible inobject....

test/mjsunit/object-literal-gc.js

+// Copyright 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:
+//
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+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --expose-gc
+
+// Test that the clearing of object literal when normalizing objects
+// works.  In particular, test that the garbage collector handles the
+// normalized object literals correctly.
+function testLiteral(size) {
+
+  // Build object-literal string.
+  var literal = "var o = { ";
+
+  for (var i = 0; i < size; i++) {
+    if (i > 0) literal += ",";
+    literal += ("a" + i + ":" + i);
+  }
+  literal += "}";
+
+  // Create the object literal.
+  eval(literal);
+
+  // Force normalization of the properties.
+  delete o["a" + (size - 1)];
+
+  // Perform GC.
+  gc();
+
+  // Check that the properties have the expected values.
+  for (var i = 0; i < size - 1; i++) {
+    assertEquals(i, o["a"+i]);
+  }
+}
+
+// The sizes to test.
+var sizes = [0, 1, 2, 100, 200, 400, 1000];
+
+// Run the test.
+for (var i = 0; i < sizes.length; i++) {
+  testLiteral(sizes[i]);
+}
+