[wasm] Pass the context to ToJS.

test/mjsunit/wasm/ffi-error.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 function testCallFFI(ffi) {
@@ skipping 60 matching lines @@
       kExprGetLocal, 1,  // --
       kExprI64Sub])      // --
     .exportFunc()
 
   var module = builder.instantiate();
 
   assertThrows(function() {
       module.exports.function_with_invalid_signature(33, 88);
     }, TypeError);
 })();
+
+(function I64JSImportThrows() {
+  var builder = new WasmModuleBuilder();
+
+  var sig_index = builder.addType(kSig_i_i);
+  var sig_i64_index = builder.addType(kSig_i_l);
+  var index = builder.addImport("func", sig_i64_index);
+  builder.addFunction("main", sig_index)
+    .addBody([
+      kExprGetLocal, 0,
+      kExprI64SConvertI32,
+      kExprCallImport, kArity1, index  // --
+    ])        // --
+    .exportFunc();
+
+  var func = function() {return {};};
+  var main = builder.instantiate({func: func}).exports.main;
+  assertThrows(function() {
+    main(13);
+  }, TypeError);
+})();