1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ctypes/incompatible-ctype.js b/js/src/jit-test/tests/ctypes/incompatible-ctype.js
new file mode 100644
index 0000000000..7e14c1d615
--- /dev/null
+++ b/js/src/jit-test/tests/ctypes/incompatible-ctype.js
@@ -0,0 +1,13 @@
+load(libdir + 'asserts.js');
+
+function test() {
+  assertTypeErrorMessage(() => { ctypes.int32_t.toString.call(1); },
+                         "CType.prototype.toString called on incompatible object, got the number 1");
+  if (ctypes.int32_t.prototype.toSource) {
+    assertTypeErrorMessage(() => { ctypes.int32_t.toSource.call(1); },
+                           "CType.prototype.toSource called on incompatible object, got the number 1");
+  }
+}
+
+if (typeof ctypes === "object")
+  test();