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-rw-r--r--js/src/jit-test/tests/closures/closure-pluseq.js31
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/closures/closure-pluseq.js b/js/src/jit-test/tests/closures/closure-pluseq.js
new file mode 100644
index 0000000000..ccf5c82709
--- /dev/null
+++ b/js/src/jit-test/tests/closures/closure-pluseq.js
@@ -0,0 +1,31 @@
+actual = '';
+expected = '3,6,9,12,15,18,';
+
+function slice(a, b)
+{
+ //return { x: a + ':' + b };
+ return b;
+}
+
+function f()
+{
+ var length = 20;
+ var index = 0;
+
+ function get3() {
+ //appendToActual("get3 " + index);
+ if (length - index < 3)
+ return null;
+ return slice(index, index += 3);
+ }
+
+ var bytes = null;
+ while (bytes = get3()) {
+ appendToActual(bytes);
+ }
+}
+
+f();
+
+
+assertEq(actual, expected)