1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug743099.js b/js/src/jit-test/tests/ion/bug743099.js
new file mode 100644
index 0000000000..48bfffee4d
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug743099.js
@@ -0,0 +1,9 @@
+function Day( t ) {}
+function WeekDay( t ) {
+  var weekday = (Day(t)+4) % 7;
+  return( weekday < 0 ? 7 + weekday : weekday );
+}
+var expect = 'No Error';
+for (var i = 0; i < 50; i++) {
+    var [] = [expect ? WeekDay(i.a) : true], print;
+}