1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/pgo-bug1259476.js b/js/src/jit-test/tests/ion/pgo-bug1259476.js
new file mode 100644
index 000000000..2a6bc66d1
--- /dev/null
+++ b/js/src/jit-test/tests/ion/pgo-bug1259476.js
@@ -0,0 +1,16 @@
+// |jit-test| --ion-pgo=on;
+
+try {
+    x = evalcx('');
+    x.__proto__ = 0;
+} catch (e) {}
+(function() {
+    for (var i = 0; i < 1; ++i) {
+        if (i % 5 == 0) {
+            for (let z of[0, 0, new Boolean(false), new Boolean(false),
+                          new Boolean(false), new Boolean(false)]) {
+                this.x;
+            }
+        }
+    }
+})()