1 files changed, 14 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/pgo-bug1252120.js b/js/src/jit-test/tests/ion/pgo-bug1252120.js
new file mode 100644
index 000000000..100fbfd34
--- /dev/null
+++ b/js/src/jit-test/tests/ion/pgo-bug1252120.js
@@ -0,0 +1,14 @@
+// |jit-test| --ion-pgo=on;
+
+target = handler = {}
+for (p of[new Proxy(target, handler)])
+  evaluate("foo()");
+function foo() {
+    symbols = [Symbol]
+    values = [NaN]
+    for (comparator of[""])
+        for (b of values) assertEq;
+    for (comparator of[""])
+        for (a of symbols)
+            for (b of values) assertEq;
+}