[wasm] Pass the context to ToJS.

test/mjsunit/wasm/ffi-error.js

Index: test/mjsunit/wasm/ffi-error.js
diff --git a/test/mjsunit/wasm/ffi-error.js b/test/mjsunit/wasm/ffi-error.js
index 81dc47806e767f00a8f3bdec9230deae2e3fc05d..6bdb657443e924b58e6cc7ccae39219b2266a55f 100644
--- a/test/mjsunit/wasm/ffi-error.js
+++ b/test/mjsunit/wasm/ffi-error.js
@@ -78,3 +78,24 @@ 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);
+})();