[wasm] Support undefined indirect table entries, behind a flag.

test/mjsunit/wasm/default-func-call.js

Index: test/mjsunit/wasm/default-func-call.js
diff --git a/test/mjsunit/wasm/indirect-calls.js b/test/mjsunit/wasm/default-func-call.js
similarity index 75%
copy from test/mjsunit/wasm/indirect-calls.js
copy to test/mjsunit/wasm/default-func-call.js
index 80bee412e028541e3b54ba7a175a512cb8293e77..7b1eee18fe04ee50bf09ff34e541c19804ddbe95 100644
--- a/test/mjsunit/wasm/indirect-calls.js
+++ b/test/mjsunit/wasm/default-func-call.js
@@ -1,8 +1,10 @@
 // Copyright 2015 the V8 project authors. All rights reserved.
+//

[bradn, 2016/06/16 08:00:20]

Extra line.
Maybe in a separate file?

 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
+// Flags: --wasm-jit-prototpe
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
@@ -47,3 +49,10 @@ assertEquals(19, module.exports.main(0, 12, 7));
 
 assertTraps(kTrapFuncSigMismatch, "module.exports.main(2, 12, 33)");
 assertTraps(kTrapFuncInvalid, "module.exports.main(3, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(4, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(1023, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(1025, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(2048, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(511, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(513, 12, 33)");
+assertTraps(kTrapFuncInvalid, "module.exports.main(-1, 12, 33)");