This is a trending crash coming out of the 4.17.0 release. The same callstack also occurred during the 4.11 release, but otherwise hasn't had an occurrence until now. Users have not provided any descriptions of their actions when the crash occurred.
Source Context
882 const FNameEntry* FName::GetComparisonNameEntry() const 883 { 884 TNameEntryArray& Names = GetNames(); 885 const NAME_INDEX Index = GetComparisonIndex(); 886 return Names[Index]; 887 } 888 889 const FNameEntry* FName::GetDisplayNameEntry() const 890 { 891 TNameEntryArray& Names = GetNames(); 892 const NAME_INDEX Index = GetDisplayIndex(); 893 ***** return Names[Index]; 894 } 895 896 FString FName::ToString() const 897 { 898 if (GetNumber() == NAME_NO_NUMBER_INTERNAL) 899 { 900 // Avoids some extra allocations in non-number case 901 return GetDisplayNameEntry()->GetPlainNameString(); 902 } 903 904 FString Out; 905 ToString(Out); 906 return Out; 907 }
repro steps currently unknown
Assertion failed: IsValidIndex(Index) [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Core\Public\UObject/NameTypes.h] [Line: 356] IsValidIndex(-572662307) UE4Editor_Core!FName::GetDisplayNameEntry() [unrealnames.cpp:894] UE4Editor_Core!FName::ToString() [unrealnames.cpp:916] UE4Editor_Core!FName::ToString() [unrealnames.cpp:907] UE4Editor_Core!FStatsThreadState::ProcessNonFrameStats() [statsdata.cpp:833] UE4Editor_Core!FStatsThreadState::AddToHistoryAndEmpty() [statsdata.cpp:921] UE4Editor_Core!FStatsThread::Tick() [stats2.cpp:936] UE4Editor_Core!FStatsThread::StatMessage() [stats2.cpp:963] UE4Editor_Core!TGraphTask<FStatMessagesTask>::ExecuteTask() [taskgraphinterfaces.h:784] UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [taskgraph.cpp:650] UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [taskgraph.cpp:559] UE4Editor_Core!FStatsThread::Run() [stats2.cpp:865] UE4Editor_Core!FRunnableThreadWin::Run() [windowsrunnablethread.cpp:76]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-48402 in the post.
| 1 |
| Component | UE - Foundation - Core |
|---|---|
| Affects Versions | 4.11, 4.17 |
| Target Fix | 4.17.2 |
| Fix Commit | 3585003 |
|---|---|
| Main Commit | 3620189 |
| Created | Aug 14, 2017 |
|---|---|
| Resolved | Aug 16, 2017 |
| Updated | Apr 27, 2018 |