1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/gc/regress-1830975.js b/js/src/jit-test/tests/wasm/gc/regress-1830975.js
new file mode 100644
index 0000000000..ae6cba6bdd
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/gc/regress-1830975.js
@@ -0,0 +1,17 @@
+// |jit-test| skip-if: !wasmGcEnabled()
+
+// Hello, future wasm dev. This test will start failing when you add casting
+// for func and extern types. When that happens, remove the assertErrorMessage.
+
+assertErrorMessage(() => {
+  const { test } = wasmEvalText(`
+    (module
+      (type $f (func (result i32)))
+      (func (export "test") (type $f)
+        ref.null $f
+        ref.test (ref null $f)
+      )
+    )
+  `).exports;
+  assertEq(test(), 1);
+}, WebAssembly.CompileError, /ref.test only supports the any hierarchy/);