1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/auto-regress/bug1863428.js b/js/src/jit-test/tests/auto-regress/bug1863428.js
new file mode 100644
index 0000000000..29939549f3
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/bug1863428.js
@@ -0,0 +1,10 @@
+// |jit-test| --fast-warmup; --no-threads
+
+function foo() {
+  var args = new Float32Array(10);
+  return args[0]?.toString();
+}
+
+for (var i = 0; i < 50; i++) {
+  foo()
+}