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-rw-r--r--js/src/jit-test/tests/basic/testArrayDensityChange.js17
1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testArrayDensityChange.js b/js/src/jit-test/tests/basic/testArrayDensityChange.js
new file mode 100644
index 000000000..b9dfabad1
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testArrayDensityChange.js
@@ -0,0 +1,17 @@
+function testArrayDensityChange() {
+ var x = [];
+ var count = 0;
+ for (var i=0; i < 100; ++i) {
+ x[i] = "asdf";
+ }
+ for (var i=0; i < x.length; ++i) {
+ if (i == 51)
+ {
+ x[199] = "asdf";
+ }
+ if (x[i])
+ count += x[i].length;
+ }
+ return count;
+}
+assertEq(testArrayDensityChange(), 404);