1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/table-pre-barrier.js b/js/src/jit-test/tests/wasm/table-pre-barrier.js
new file mode 100644
index 000000000..a0d4fc9c0
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/table-pre-barrier.js
@@ -0,0 +1,24 @@
+load(libdir + "wasm.js");
+
+const Module = WebAssembly.Module;
+const Instance = WebAssembly.Instance;
+const Table = WebAssembly.Table;
+
+var i42 = new Instance(new Module(wasmTextToBinary(`(module (func (result i32) (i32.const 42)) (export "f" 0))`)));
+var i13 = new Instance(new Module(wasmTextToBinary(`(module (func (result i32) (i32.const 13)) (export "f" 0))`)));
+var t = new Table({element:"anyfunc", initial:1});
+t.set(0, i42.exports.f);
+
+assertEq(t.get(0)(), 42);
+
+verifyprebarriers();
+t.set(0, i13.exports.f);
+verifyprebarriers();
+
+assertEq(t.get(0)(), 13);
+
+verifyprebarriers();
+t.set(0, null);
+verifyprebarriers();
+
+assertEq(t.get(0), null);