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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
/* 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 "mozilla/Utf8.h" // mozilla::Utf8Unit
#include "jsapi.h"
#include "js/CompilationAndEvaluation.h" // JS::Compile
#include "js/HeapAPI.h"
#include "js/SourceText.h" // JS::Source{Ownership,Text}
#include "jsapi-tests/tests.h"
#include "util/Text.h"
class TestTracer final : public JS::CallbackTracer {
void onChild(JS::GCCellPtr thing, const char* name) override {
if (thing.asCell() == expectedCell && thing.kind() == expectedKind) {
found = true;
js::gc::Cell* expectedCell;
JS::TraceKind expectedKind;
bool found;
explicit TestTracer(JSContext* cx)
: JS::CallbackTracer(cx),
found(false) {}
static const JSClass TestClass = {"TestClass", JSCLASS_HAS_RESERVED_SLOTS(1)};
BEGIN_TEST(testPrivateGCThingValue) {
JS::RootedObject obj(cx, JS_NewObject(cx, &TestClass));
// Make a JSScript to stick into a PrivateGCThingValue.
static const char code[] = "'objet petit a'";
JS::CompileOptions options(cx);
options.setFileAndLine(__FILE__, __LINE__);
JS::SourceText<mozilla::Utf8Unit> srcBuf;
CHECK(srcBuf.init(cx, code, js_strlen(code), JS::SourceOwnership::Borrowed));
JS::RootedScript script(cx, JS::Compile(cx, options, srcBuf));
JS_SetReservedSlot(obj, 0, PrivateGCThingValue(script));
TestTracer trc(cx);
trc.expectedCell = script;
trc.expectedKind = JS::TraceKind::Script;
JS::TraceChildren(&trc, JS::GCCellPtr(obj, JS::TraceKind::Object));
return true;