1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ctypes/incompatible-struct.js b/js/src/jit-test/tests/ctypes/incompatible-struct.js
new file mode 100644
index 0000000000..ccd212978a
--- /dev/null
+++ b/js/src/jit-test/tests/ctypes/incompatible-struct.js
@@ -0,0 +1,31 @@
+load(libdir + 'asserts.js');
+
+function test() {
+  assertTypeErrorMessage(() => { ctypes.StructType("a").define.call(1); },
+                         "StructType.prototype.define called on incompatible object, got the number 1");
+  assertTypeErrorMessage(() => { ctypes.StructType("a").define.call(ctypes.int32_t); },
+                         "StructType.prototype.define called on non-StructType, got ctypes.int32_t");
+
+  let p = Object.getPrototypeOf(ctypes.StructType("a", [ { "x": ctypes.int32_t, } ])());
+  let o = {};
+  Object.setPrototypeOf(o, p);
+  assertTypeErrorMessage(() => { let a = o.x; },
+                         "StructType property getter called on incompatible object, got <<error converting value to string>>");
+  assertTypeErrorMessage(() => { o.x = 1; },
+                         "StructType property setter called on incompatible object, got <<error converting value to string>>");
+
+  o = ctypes.int32_t(0);
+  Object.setPrototypeOf(o, p);
+  assertTypeErrorMessage(() => { let a = o.x; },
+                         "StructType property getter called on non-StructType CData, got ctypes.int32_t(0)");
+  assertTypeErrorMessage(() => { o.x = 1; },
+                         "StructType property setter called on non-StructType CData, got ctypes.int32_t(0)");
+
+  assertTypeErrorMessage(() => { ctypes.StructType("a", [])().addressOfField.call(1); },
+                         "StructType.prototype.addressOfField called on incompatible object, got the number 1");
+  assertTypeErrorMessage(() => { ctypes.StructType("a", [])().addressOfField.call(ctypes.int32_t(0)); },
+                         "StructType.prototype.addressOfField called on non-StructType CData, got ctypes.int32_t(0)");
+}
+
+if (typeof ctypes === "object")
+  test();