1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/auto-regress/bug1791401.js b/js/src/jit-test/tests/auto-regress/bug1791401.js
new file mode 100644
index 0000000000..6b3a7a5dbd
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/bug1791401.js
@@ -0,0 +1,19 @@
+// |jit-test| skip-if: !('oomTest' in this)
+
+oomTest(function() {
+  var f = Function(`
+    // Don't actually enter the loop. This still causes the original bug and
+    // additionally makes the test complete faster.
+    //
+    // Don't directly use |false|, otherwise the byte code emitter won't emit
+    // the loop.
+    var False = [false, false][0];
+    if (False) {
+      for (let x;;) {
+        // Capture |x|, so it's freshened each loop iteration.
+        Object(() => x);
+      }
+     }
+  `);
+  f();
+});