1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/function-var-environment.js b/js/src/jit-test/tests/warp/function-var-environment.js
new file mode 100644
index 0000000000..dd23cb67a9
--- /dev/null
+++ b/js/src/jit-test/tests/warp/function-var-environment.js
@@ -0,0 +1,43 @@
+function defaultValue() { return 123; }
+
+// 2 environment objects: Call => Var. The lambda uses both of them.
+function testBasic(p = defaultValue()) {
+    for (var i = 0; i < 2000; i++) {}
+    return () => i + p;
+}
+assertEq(testBasic()(), 2123);
+
+function testBailout(p = defaultValue()) {
+    for (var i = 0; i < 2000; i++) {
+        if (i > 1950) {
+            bailout();
+        }
+    }
+    return () => i + p;
+}
+assertEq(testBailout()(), 2123);
+
+// 3 environment objects: Call => Var => Lexical. The lambda uses all of them.
+let escaped;
+function testVarAndLexical(p = defaultValue()) {
+    var q = p + 1;
+    let i = 0;
+    for (; i < 2000; i++) {
+        escaped = () => i + p + q;
+    }
+}
+testVarAndLexical();
+assertEq(escaped(), 2247);
+
+function testVarAndLexicalBailout(p = defaultValue()) {
+    var q = p + 1;
+    let i = 0;
+    for (; i < 2000; i++) {
+        escaped = () => i + p - q;
+        if (i > 1950) {
+            bailout();
+        }
+    }
+}
+testVarAndLexicalBailout();
+assertEq(escaped(), 1999);