Ensure reducing the length of an array doesn't make it go holey.

test/mjsunit/elements-length-no-holey.js

Index: test/mjsunit/elements-length-no-holey.js
diff --git a/test/mjsunit/regress/regress-113924.js b/test/mjsunit/elements-length-no-holey.js
similarity index 94%
copy from test/mjsunit/regress/regress-113924.js
copy to test/mjsunit/elements-length-no-holey.js
index 3ecdec48f219b9ea545702ebf3a396debe7a93f8..a753fd0651ab6fdefef6afa872aa67f54a9721db 100644
--- a/test/mjsunit/regress/regress-113924.js
+++ b/test/mjsunit/elements-length-no-holey.js
@@ -25,7 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-var count=12000;
-while(count--) {
-  eval("var a = new Object(10); a[2] += 7;");
-}
+// Flags: --allow-natives-syntax
+
+a = [1,2,3];
+a.length = 1;
+assertFalse(%HasFastHoleyElements(a));

[danno, 2012/10/31 18:23:11]

assertTrue(%FastSmiElements(a));