1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ctypes/pointer.js b/js/src/jit-test/tests/ctypes/pointer.js
new file mode 100644
index 0000000000..da0685f07b
--- /dev/null
+++ b/js/src/jit-test/tests/ctypes/pointer.js
@@ -0,0 +1,31 @@
+load(libdir + 'asserts.js');
+
+function test() {
+  let p = ctypes.StructType("foo").ptr(0);
+
+  assertTypeErrorMessage(() => { p.increment(); },
+                         "cannot modify pointer of undefined size foo.ptr(ctypes.UInt64(\"0x0\"))");
+  assertTypeErrorMessage(() => { p.decrement(); },
+                         "cannot modify pointer of undefined size foo.ptr(ctypes.UInt64(\"0x0\"))");
+
+  assertTypeErrorMessage(() => { let a = p.contents; },
+                         "cannot get contents of pointer of undefined size foo.ptr(ctypes.UInt64(\"0x0\"))");
+  assertTypeErrorMessage(() => { p.contents = 1; },
+                         "cannot set contents of pointer of undefined size foo.ptr(ctypes.UInt64(\"0x0\"))");
+
+  let p2 = ctypes.int32_t.ptr(0);
+  assertTypeErrorMessage(() => { let a = p2.contents; },
+                         "cannot read contents of null pointer ctypes.int32_t.ptr(ctypes.UInt64(\"0x0\"))");
+  assertTypeErrorMessage(() => { p2.contents = 1; },
+                         "cannot write contents to null pointer ctypes.int32_t.ptr(ctypes.UInt64(\"0x0\"))");
+  assertTypeErrorMessage(() => { p2.readString(); },
+                         "cannot read contents of null pointer ctypes.int32_t.ptr(ctypes.UInt64(\"0x0\"))");
+
+  assertTypeErrorMessage(() => { ctypes.int32_t(0).readString(); },
+                         "expected PointerType or ArrayType, got ctypes.int32_t(0)");
+  assertTypeErrorMessage(() => { ctypes.int32_t(0).address().readString(); },
+                         /base type ctypes\.int32_t\.ptr\(ctypes\.UInt64\(\"[x0-9A-Fa-f]+\"\)\) is not an 8-bit or 16-bit integer or character type/);
+}
+
+if (typeof ctypes === "object")
+  test();