2 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/regress/bug1727284/directives.txt b/js/src/jit-test/tests/wasm/regress/bug1727284/directives.txt
new file mode 100644
index 0000000000..82e51d5a01
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/regress/bug1727284/directives.txt
@@ -0,0 +1 @@
+|jit-test| --fast-warmup; --ion-warmup-threshold=0; --wasm-compiler=optimizing; include:wasm.js
diff --git a/js/src/jit-test/tests/wasm/regress/bug1727284/test.js b/js/src/jit-test/tests/wasm/regress/bug1727284/test.js
new file mode 100644
index 0000000000..54d7350be9
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/regress/bug1727284/test.js
@@ -0,0 +1,12 @@
+function test() {
+  let instance = wasmEvalText(`
+    (module
+      (global $g (mut externref) (ref.null extern))
+      (func (export "set") (param externref) local.get 0 global.set $g)
+    )
+  `).exports;
+  let obj = { field: null };
+  instance.set(obj);
+  for (var v4 = 0; v4 < 10; v4++) {}
+}
+test();