[Webkit-unassigned] [Bug 192481] New: Injected bundle for WebKitTestRunner leaks WKTypeRef objects

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Dec 6 16:04:32 PST 2018


https://bugs.webkit.org/show_bug.cgi?id=192481

            Bug ID: 192481
           Summary: Injected bundle for WebKitTestRunner leaks WKTypeRef
                    objects
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org
                CC: joepeck at webkit.org, lforschler at apple.com,
                    simon.fraser at apple.com, thorton at apple.com,
                    webkit-bug-importer at group.apple.com

The injected bundle for WebKitTestRunner leaks WKTypeRef objects, mostly WKNSNumber objects and a WKNSDictionary.

STACK OF 1 INSTANCE OF 'ROOT LEAK: <WKNSDictionary>':
[thread 0x7fff93a32380]:
53  libdyld.dylib                      0x7fff5b08d015 start + 1
52  com.apple.WebKit.WebContent           0x1010af382 main + 34  XPCServiceMain.mm:165
51  com.apple.WebKit.WebContent           0x1010af094 WebKit::XPCServiceMain(int, char const**) + 1188  XPCServiceMain.mm:157
50  libxpc.dylib                       0x7fff5b3e69ca xpc_main + 433
49  libxpc.dylib                       0x7fff5b3e7d77 _xpc_objc_main + 580
48  com.apple.AppKit                   0x7fff30609a72 NSApplicationMain + 804
47  com.apple.AppKit                   0x7fff3063a885 -[NSApplication run] + 764
46  com.apple.AppKit                   0x7fff30ddbe34 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
45  com.apple.AppKit                   0x7fff30645a73 _DPSNextEvent + 2085
44  com.apple.HIToolbox                0x7fff32394884 _BlockUntilNextEventMatchingListInModeWithFilter + 64
43  com.apple.HIToolbox                0x7fff32394b06 ReceiveNextEventCommon + 613
42  com.apple.HIToolbox                0x7fff32394d96 RunCurrentEventLoopInMode + 286
41  com.apple.CoreFoundation           0x7fff330aa153 CFRunLoopRunSpecific + 483
40  com.apple.CoreFoundation           0x7fff330aa8ed __CFRunLoopRun + 1293
39  com.apple.CoreFoundation           0x7fff330ab470 __CFRunLoopDoSources0 + 208
38  com.apple.CoreFoundation           0x7fff3318242c __CFRunLoopDoSource0 + 108
37  com.apple.CoreFoundation           0x7fff330c8a11 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
36  com.apple.JavaScriptCore              0x2b14cfea4 WTF::RunLoop::performWork(void*) + 36  RunLoopCF.cpp:38
35  com.apple.JavaScriptCore              0x2b14cf5fd WTF::RunLoop::performWork() + 445  RunLoop.cpp:124
34  com.apple.JavaScriptCore              0x2b1467e5d WTF::Function<void ()>::operator()() const + 173  Function.h:56
33  com.apple.WebKit                      0x101127de9 WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() + 25  Function.h:101
32  com.apple.WebKit                      0x101127ed8 IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() + 104  Connection.cpp:957
31  com.apple.WebKit                      0x101106a0d IPC::Connection::dispatchOneIncomingMessage() + 1533  Connection.cpp:1074
30  com.apple.WebKit                      0x1010f8551 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 721  Connection.cpp:0
29  com.apple.WebKit                      0x101105c8c IPC::Connection::dispatchMessage(IPC::Decoder&) + 476  Connection.cpp:979
28  com.apple.WebKit                      0x101e5edfb WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 155  WebProcess.cpp:681
27  com.apple.WebKit                      0x1022f2b3d WebKit::WebProcess::didReceiveWebProcessMessage(IPC::Connection&, IPC::Decoder&) + 237  WebProcessMessageReceiver.cpp:131
26  com.apple.WebKit                      0x1022f5397 void IPC::handleMessage<Messages::WebProcess::CreateWebPage, WebKit::WebProcess, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&)>(IPC::Decoder&, WebKit::WebProcess*, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&)) + 359  HandleMessage.h:134
25  com.apple.WebKit                      0x1022fbb10 void IPC::callMemberFunction<WebKit::WebProcess, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&), std::__1::tuple<unsigned long long, WebKit::WebPageCreationParameters>, std::__1::integer_sequence<unsigned long, 0ul, 1ul> >(std::__1::tuple<unsigned long long, WebKit::WebPageCreationParameters>&&, WebKit::WebProcess*, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&)) + 96  HandleMessage.h:48
24  com.apple.WebKit                      0x1022fbdb0 void IPC::callMemberFunctionImpl<WebKit::WebProcess, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&), std::__1::tuple<unsigned long long, WebKit::WebPageCreationParameters>, 0ul, 1ul>(WebKit::WebProcess*, void (WebKit::WebProcess::*)(unsigned long long, WebKit::WebPageCreationParameters&&), std::__1::tuple<unsigned long long, WebKit::WebPageCreationParameters>&&, std::__1::integer_sequence<unsigned long, 0ul, 1ul>) + 192  HandleMessage.h:42
23  com.apple.WebKit                      0x101e5dec8 WebKit::WebProcess::createWebPage(unsigned long long, WebKit::WebPageCreationParameters&&) + 232  WebProcess.cpp:615
22  com.apple.WebKit                      0x1021a301e WebKit::WebPage::create(unsigned long long, WebKit::WebPageCreationParameters&&) + 158  WebPage.cpp:348
21  com.apple.WebKit                      0x101ecc7a3 WebKit::InjectedBundle::didCreatePage(WebKit::WebPage*) + 67  InjectedBundle.cpp:548
20  com.apple.WebKit                      0x101ef1f43 WebKit::InjectedBundleClient::didCreatePage(WebKit::InjectedBundle&, WebKit::WebPage&) + 99  InjectedBundleClient.cpp:47
19  com.apple.WebKitTestRunner.InjectedBundle        0x2b90eb9d4 WTR::InjectedBundle::didCreatePage(OpaqueWKBundle const*, OpaqueWKBundlePage const*, void const*) + 36  InjectedBundle.cpp:70
18  com.apple.WebKitTestRunner.InjectedBundle        0x2b90ebc7b WTR::InjectedBundle::didCreatePage(OpaqueWKBundlePage const*) + 667  InjectedBundle.cpp:124
17  com.apple.WebKit                      0x101f0368b WKBundlePostSynchronousMessage + 91  WKBundle.cpp:74
16  com.apple.WebKit                      0x101ec7034 WebKit::InjectedBundle::postSynchronousMessage(WTF::String const&, API::Object*, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 372  InjectedBundle.cpp:141
15  com.apple.WebKit                      0x101ec75a8 bool IPC::Connection::sendSync<Messages::WebProcessPool::HandleSynchronousMessage>(Messages::WebProcessPool::HandleSynchronousMessage&&, Messages::WebProcessPool::HandleSynchronousMessage::Reply&&, unsigned long long, WTF::Seconds, WTF::OptionSet<IPC::SendSyncOption>) + 1208  Connection.h:478
14  com.apple.WebKit                      0x101eefc5d bool IPC::Decoder::decode<std::__1::tuple<WebKit::UserData&>, (void*)0>(std::__1::tuple<WebKit::UserData&>&) + 29  Decoder.h:150
13  com.apple.WebKit                      0x101eefc8d IPC::ArgumentCoder<std::__1::tuple<WebKit::UserData&> >::decode(IPC::Decoder&, std::__1::tuple<WebKit::UserData&>&) + 29  ArgumentCoders.h:210
12  com.apple.WebKit                      0x101eefcd0 bool IPC::TupleCoder<1ul, WebKit::UserData&>::decode<WebKit::UserData, (void*)0>(IPC::Decoder&, std::__1::tuple<WebKit::UserData&>&) + 48  ArgumentCoders.h:173
11  com.apple.WebKit                      0x1012c17ad bool IPC::Decoder::decode<WebKit::UserData, (void*)0>(WebKit::UserData&) + 29  Decoder.h:150
10  com.apple.WebKit                      0x1012c17fd bool IPC::ArgumentCoder<WebKit::UserData>::decode<WebKit::UserData, (void*)0>(IPC::Decoder&, WebKit::UserData&) + 29  ArgumentCoder.h:96
9   com.apple.WebKit                      0x1015f3ffd WebKit::UserData::decode(IPC::Decoder&, WebKit::UserData&) + 29  UserData.cpp:151
8   com.apple.WebKit                      0x1015f445c WebKit::UserData::decode(IPC::Decoder&, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 1100  UserData.cpp:392
7   com.apple.WebKit                      0x101657516 API::Dictionary::create(WTF::HashMap<WTF::String, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >, WTF::StringHash, WTF::HashTraits<WTF::String>, WTF::HashTraits<WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> > > >) + 38  APIDictionary.cpp:41
6   com.apple.WebKit                      0x1016575ba API::ObjectImpl<(API::Object::Type)9>::operator new(unsigned long) + 26  APIObject.h:264
5   com.apple.WebKit                      0x1014c1a6c API::Object::newObject(unsigned long, API::Object::Type) + 620  APIObject.mm:207
4   com.apple.CoreFoundation           0x7fff3302cff6 +[NSDictionary allocWithZone:] + 102
3   libobjc.A.dylib                    0x7fff5a469f29 +[NSObject allocWithZone:] + 16
2   libobjc.A.dylib                    0x7fff5a465cea class_createInstance + 87
1   libsystem_malloc.dylib             0x7fff5b23858e calloc + 30
0   libsystem_malloc.dylib             0x7fff5b237ca0 malloc_zone_calloc + 123 
====
    15 (880 bytes) ROOT LEAK: <WKNSDictionary 0x7ff974b060c0> [64]
       13 (800 bytes) _dictionary + 16 --> 0x7ff979107880 [256]
          1 (48 bytes) 0x7ff979105750 [48]
          1 (48 bytes) 0x7ff9791064b0 [48]
          1 (48 bytes) 0x7ff979108180 [48]
          1 (48 bytes) 0x7ff979108980 [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b00270> [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b002a0> [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b28150> [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b288a0> [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b29ce0> [48]
          1 (48 bytes) <WKNSNumber 0x7ff974b2a9d0> [48]
          1 (32 bytes) 0x7ff979107a70 [32]
          1 (32 bytes) 0x7ff9791081b0 [32]
       1 (16 bytes) _dictionary + 48 --> 0x7ff979107cd0 [16]

STACK OF 1 INSTANCE OF 'ROOT LEAK: <WKNSNumber>':
[thread 0x7fff93a32380]:
70  libdyld.dylib                      0x7fff5b08d015 start + 1
69  com.apple.WebKit.WebContent           0x1010af382 main + 34  XPCServiceMain.mm:165
68  com.apple.WebKit.WebContent           0x1010af094 WebKit::XPCServiceMain(int, char const**) + 1188  XPCServiceMain.mm:157
67  libxpc.dylib                       0x7fff5b3e69ca xpc_main + 433
66  libxpc.dylib                       0x7fff5b3e7d77 _xpc_objc_main + 580
65  com.apple.AppKit                   0x7fff30609a72 NSApplicationMain + 804
64  com.apple.AppKit                   0x7fff3063a885 -[NSApplication run] + 764
63  com.apple.AppKit                   0x7fff30ddbe34 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
62  com.apple.AppKit                   0x7fff30645a73 _DPSNextEvent + 2085
61  com.apple.HIToolbox                0x7fff32394884 _BlockUntilNextEventMatchingListInModeWithFilter + 64
60  com.apple.HIToolbox                0x7fff32394b06 ReceiveNextEventCommon + 613
59  com.apple.HIToolbox                0x7fff32394d96 RunCurrentEventLoopInMode + 286
58  com.apple.CoreFoundation           0x7fff330aa153 CFRunLoopRunSpecific + 483
57  com.apple.CoreFoundation           0x7fff330aad5b __CFRunLoopRun + 2427
56  com.apple.CoreFoundation           0x7fff330b378a __CFRunLoopDoTimers + 346
55  com.apple.CoreFoundation           0x7fff330b3c87 __CFRunLoopDoTimer + 1095
54  com.apple.CoreFoundation           0x7fff330b4014 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
53  com.apple.JavaScriptCore              0x2b14d1631 WTF::timerFired(__CFRunLoopTimer*, void*) + 49  RunLoopTimerCF.cpp:52
52  com.apple.WebCore                     0x2a31661f6 WTF::RunLoopTimer<WebCore::DataURLDecoder::DecodingResultDispatcher>::fired() + 102  RunLoopTimer.h:72
51  com.apple.WebCore                     0x2a3165b08 WebCore::DataURLDecoder::DecodingResultDispatcher::timerFired() + 264  DataURLDecoder.cpp:100
50  com.apple.WebCore                     0x2a3165da3 WTF::Function<void (std::optional<WebCore::DataURLDecoder::Result>)>::operator()(std::optional<WebCore::DataURLDecoder::Result>) const + 227  Function.h:56
49  com.apple.WebCore                     0x2a2a67719 WTF::Function<void (std::optional<WebCore::DataURLDecoder::Result>)>::CallableWrapper<WebCore::ResourceLoader::loadDataURL()::$_9>::call(std::optional<WebCore::DataURLDecoder::Result>) + 57  Function.h:101
48  com.apple.WebCore                     0x2a2a67b78 auto WebCore::ResourceLoader::loadDataURL()::$_9::operator()<std::optional<WebCore::DataURLDecoder::Result> >(std::optional<WebCore::DataURLDecoder::Result>) + 792  ResourceLoader.cpp:272
47  com.apple.WebCore                     0x2a2a6f609 WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&) + 2297  SubresourceLoader.cpp:370
46  com.apple.WebCore                     0x2a2a52cf6 WebCore::ResourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&) + 342  ResourceLoader.cpp:482
45  com.apple.WebCore                     0x2a299ea35 WTF::CompletionHandlerCallingScope::~CompletionHandlerCallingScope() + 21  CompletionHandler.h:78
44  com.apple.WebCore                     0x2a29aca5f WTF::CompletionHandlerCallingScope::~CompletionHandlerCallingScope() + 47  CompletionHandler.h:78
43  com.apple.WebCore                     0x2a1621bfd WTF::CompletionHandler<void ()>::operator()() + 205  CompletionHandler.h:59
42  com.apple.WebCore                     0x2a000eaf5 WTF::Function<void ()>::~Function() + 21  Forward.h:54
41  com.apple.WebCore                     0x2a000ebaf WTF::Function<void ()>::~Function() + 175  memory:2603
40  com.apple.WebCore                     0x2a2a7c1f9 WTF::Function<void ()>::CallableWrapper<WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&)::$_6>::~CallableWrapper() + 25  Function.h:91
39  com.apple.WebCore                     0x2a2a7c1d5 WTF::Function<void ()>::CallableWrapper<WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&)::$_6>::~CallableWrapper() + 21  Function.h:91
38  com.apple.WebCore                     0x2a2a7c2d1 WTF::Function<void ()>::CallableWrapper<WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&)::$_6>::~CallableWrapper() + 49  Function.h:91
37  com.apple.WebCore                     0x2a2a6f8b5 WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&)::$_6::~$_6() + 21  SubresourceLoader.cpp:370
36  com.apple.WebCore                     0x2a2a75253 WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&)::$_6::~$_6() + 35  SubresourceLoader.cpp:370
35  com.apple.WebCore                     0x2a299ea35 WTF::CompletionHandlerCallingScope::~CompletionHandlerCallingScope() + 21  CompletionHandler.h:78
34  com.apple.WebCore                     0x2a29aca5f WTF::CompletionHandlerCallingScope::~CompletionHandlerCallingScope() + 47  CompletionHandler.h:78
33  com.apple.WebCore                     0x2a1621bf4 WTF::CompletionHandler<void ()>::operator()() + 196  CompletionHandler.h:59
32  com.apple.WebCore                     0x2a000f1ed WTF::Function<void ()>::operator()() const + 173  Function.h:56
31  com.apple.WebCore                     0x2a2a683c9 WTF::Function<void ()>::CallableWrapper<auto WebCore::ResourceLoader::loadDataURL()::$_9::operator()<std::optional<WebCore::DataURLDecoder::Result> >(std::optional<WebCore::DataURLDecoder::Result>)::'lambda'()>::call() + 25  Function.h:101
30  com.apple.WebCore                     0x2a2a68558 auto WebCore::ResourceLoader::loadDataURL()::$_9::operator()<std::optional<WebCore::DataURLDecoder::Result> >(std::optional<WebCore::DataURLDecoder::Result>)::'lambda'()::operator()() + 200  ResourceLoader.cpp:278
29  com.apple.WebCore                     0x2a2a6e4f8 WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&) + 984  SubresourceLoader.cpp:644
28  com.apple.WebCore                     0x2a2a7074d WebCore::SubresourceLoader::notifyDone(WebCore::LoadCompletionType) + 125  SubresourceLoader.cpp:743
27  com.apple.WebCore                     0x2a2af85f6 WebCore::CachedResourceLoader::loadDone(WebCore::LoadCompletionType, bool) + 214  CachedResourceLoader.cpp:1319
26  com.apple.WebCore                     0x2a29f8c3d WebCore::FrameLoader::loadDone(WebCore::LoadCompletionType) + 45  FrameLoader.cpp:794
25  com.apple.WebCore                     0x2a29f8c00 WebCore::FrameLoader::checkCompleted() + 592  FrameLoader.cpp:0
24  com.apple.WebCore                     0x2a29f8ed6 WebCore::FrameLoader::checkLoadComplete() + 502  FrameLoader.cpp:2651
23  com.apple.WebCore                     0x2a2a04101 WebCore::FrameLoader::checkLoadCompleteForThisFrame() + 2353  FrameLoader.cpp:2492
22  com.apple.WebKit                      0x102027dfb WebKit::WebFrameLoaderClient::dispatchDidFailLoad(WebCore::ResourceError const&) + 155  WebFrameLoaderClient.cpp:572
21  com.apple.WebKit                      0x101efeda5 WebKit::InjectedBundlePageLoaderClient::didFailLoadWithErrorForFrame(WebKit::WebPage&, WebKit::WebFrame&, WebCore::ResourceError const&, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 149  InjectedBundlePageLoaderClient.cpp:158
20  com.apple.WebKitTestRunner.InjectedBundle        0x2b90f7430 WTR::InjectedBundlePage::didFailLoadWithErrorForFrame(OpaqueWKBundlePage const*, OpaqueWKBundleFrame const*, OpaqueWKError const*, void const**, void const*) + 48  InjectedBundlePage.cpp:610
19  com.apple.WebKitTestRunner.InjectedBundle        0x2b90f8a0c WTR::InjectedBundlePage::didFailLoadWithErrorForFrame(OpaqueWKBundleFrame const*, OpaqueWKError const*) + 76  InjectedBundlePage.cpp:981
18  com.apple.WebKitTestRunner.InjectedBundle        0x2b911d61f WTR::TestRunner::shouldDumpFrameLoadCallbacks() + 95  TestRunner.cpp:268
17  com.apple.WebKit                      0x101f0368b WKBundlePostSynchronousMessage + 91  WKBundle.cpp:74
16  com.apple.WebKit                      0x101ec7034 WebKit::InjectedBundle::postSynchronousMessage(WTF::String const&, API::Object*, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 372  InjectedBundle.cpp:141
15  com.apple.WebKit                      0x101ec75a8 bool IPC::Connection::sendSync<Messages::WebProcessPool::HandleSynchronousMessage>(Messages::WebProcessPool::HandleSynchronousMessage&&, Messages::WebProcessPool::HandleSynchronousMessage::Reply&&, unsigned long long, WTF::Seconds, WTF::OptionSet<IPC::SendSyncOption>) + 1208  Connection.h:478
14  com.apple.WebKit                      0x101eefc5d bool IPC::Decoder::decode<std::__1::tuple<WebKit::UserData&>, (void*)0>(std::__1::tuple<WebKit::UserData&>&) + 29  Decoder.h:150
13  com.apple.WebKit                      0x101eefc8d IPC::ArgumentCoder<std::__1::tuple<WebKit::UserData&> >::decode(IPC::Decoder&, std::__1::tuple<WebKit::UserData&>&) + 29  ArgumentCoders.h:210
12  com.apple.WebKit                      0x101eefcd0 bool IPC::TupleCoder<1ul, WebKit::UserData&>::decode<WebKit::UserData, (void*)0>(IPC::Decoder&, std::__1::tuple<WebKit::UserData&>&) + 48  ArgumentCoders.h:173
11  com.apple.WebKit                      0x1012c17ad bool IPC::Decoder::decode<WebKit::UserData, (void*)0>(WebKit::UserData&) + 29  Decoder.h:150
10  com.apple.WebKit                      0x1012c17fd bool IPC::ArgumentCoder<WebKit::UserData>::decode<WebKit::UserData, (void*)0>(IPC::Decoder&, WebKit::UserData&) + 29  ArgumentCoder.h:96
9   com.apple.WebKit                      0x1015f3ffd WebKit::UserData::decode(IPC::Decoder&, WebKit::UserData&) + 29  UserData.cpp:151
8   com.apple.WebKit                      0x1015f41c0 WebKit::UserData::decode(IPC::Decoder&, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 432  UserData.cpp:356
7   com.apple.WebKit                      0x1015f67e2 API::Number<bool, (API::Object::Type)31>::decode(IPC::Decoder&, WTF::RefPtr<API::Object, WTF::DumbPtrTraits<API::Object> >&) + 66  APINumber.h:56
6   com.apple.WebKit                      0x10124d19a API::Number<bool, (API::Object::Type)31>::create(bool) + 42  APINumber.h:40
5   com.apple.WebKit                      0x101250dda API::ObjectImpl<(API::Object::Type)31>::operator new(unsigned long) + 26  APIObject.h:264
4   com.apple.WebKit                      0x1014c1935 API::Object::newObject(unsigned long, API::Object::Type) + 309  APIObject.mm:166
3   com.apple.Foundation               0x7fff3518814e NSAllocateObject + 19
2   libobjc.A.dylib                    0x7fff5a465cea class_createInstance + 87
1   libsystem_malloc.dylib             0x7fff5b23858e calloc + 30
0   libsystem_malloc.dylib             0x7fff5b237ca0 malloc_zone_calloc + 123 
====
    1 (48 bytes) ROOT LEAK: <WKNSNumber 0x7ff974850b00> [48]

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