1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/bug1661728.js b/js/src/jit-test/tests/warp/bug1661728.js
new file mode 100644
index 0000000000..ac4ad86552
--- /dev/null
+++ b/js/src/jit-test/tests/warp/bug1661728.js
@@ -0,0 +1,43 @@
+with ({}) {} // Don't inline anything into the top-level script.
+
+function foo() {}
+
+function inline_foo_into_bar() {
+    with ({}) {} // Don't inline anything into this function.
+    for (var i = 0; i < 10; i++) {
+        bar(2);
+    }
+
+}
+
+function bar(x) {
+    switch (x) {
+    case 1:
+        inline_foo_into_bar();
+
+        // Trigger a compacting gc to discard foo's jitscript.
+        // Do it while bar is on the stack to keep bar's jitscript alive.
+        gc(foo, 'shrinking');
+        break;
+    case 2:
+        foo();
+        break;
+    case 3:
+        break;
+    }
+}
+
+// Warm up foo and bar.
+for (var i = 0; i < 10; i++) {
+    foo();
+    bar(3);
+}
+
+// Inline and discard foo's jitscript.
+bar(1);
+
+// Warp-compile bar
+for (var i = 0; i < 50; i++) {
+    foo(); // ensure that foo has a new jitscript
+    bar(3);
+}