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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#include "js/GlobalObject.h"
#include "jsapi-tests/tests.h"
* Bug 689101 - jsval is technically a non-POD type because it has a private
* data member. On gcc, this doesn't seem to matter. On MSVC, this prevents
* returning a jsval from a function between C and C++ because it will use a
* retparam in C++ and a direct return value in C.
* Bug 712289 - jsval alignment was different on 32-bit platforms between C and
* C++ because the default alignments of js::Value and jsval_layout differ.
extern "C" {
extern bool C_ValueToObject(JSContext* cx, jsval v, JSObject** obj);
extern jsval C_GetEmptyStringValue(JSContext* cx);
extern size_t C_jsvalAlignmentTest();
BEGIN_TEST(testValueABI_retparam) {
JS::RootedObject obj(cx, JS::CurrentGlobalOrNull(cx));
RootedValue v(cx, ObjectValue(*obj));
obj = nullptr;
CHECK(C_ValueToObject(cx, v, obj.address()));
bool equal;
RootedValue v2(cx, ObjectValue(*obj));
CHECK(JS_StrictlyEqual(cx, v, v2, &equal));
v = C_GetEmptyStringValue(cx);
return true;
BEGIN_TEST(testValueABI_alignment) {
typedef struct {
char c;
jsval v;
} AlignTest;
CHECK(C_jsvalAlignmentTest() == sizeof(AlignTest));
return true;