c++ - FObjectFinder 上的访问冲突

Question

我在 Unreal 中的项目遇到了问题。我大约一个月前写了一些代码，直到昨天编辑器在发布时开始崩溃时，它都运行良好。我在日志中收到此错误消息:

[2018.06.25-20.39.29:731][  0]LogWindows: Error: === Critical error: ===
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: 
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: Fatal error!
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: 
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000008d0
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: 
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x000000002548206A UE4Editor-Landscape.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x000000000B927D45 UE4Editor-Engine.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x000000000B95BF0E UE4Editor-Engine.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x00000000145DE8FD UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x000000001469DABC UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x00000000146B5259 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x00000000146B4774 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:731][  0]LogWindows: Error: [Callstack] 0x00000000146CB0C3 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000146D5A3A UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000146D51B2 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000F7A72E21 UE4Editor-Lyfe_Game.dll!ConstructorHelpersInternal::FindOrLoadObject<UParticleSystem>() [c:\program files\epic games\ue_4.18\engine\source\runtime\coreuobject\public\uobject\constructorhelpers.h:35]
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000F7A7314F UE4Editor-Lyfe_Game.dll!UCompound_ParticleComponent_Cell::UCompound_ParticleComponent_Cell() [c:\users\megapoort\desktop\lyfe\lyfe_game\source\lyfe_game\private\compound_particlecomponent_cell.cpp:30]
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000144605CD UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x0000000014698696 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000145E3EC4 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000F7A6B41D UE4Editor-Lyfe_Game.dll!ACompoundCloud_Cell::ACompoundCloud_Cell() [c:\users\megapoort\desktop\lyfe\lyfe_game\source\lyfe_game\private\compoundcloud_cell.cpp:64]
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000144605CD UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000146D91B0 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000146BB41F UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x0000000014462547 UE4Editor-CoreUObject.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000149CE6C0 UE4Editor-Core.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x0000000014C22282 UE4Editor-Core.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x000000004489F60D UE4Editor-Projects.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x000000004489F91E UE4Editor-Projects.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B66F7F71 UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B66FC4EC UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B66F525A UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B66F54AA UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B6702379 UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x00000000B6703D57 UE4Editor.exe!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x000000005ED03034 KERNEL32.DLL!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x000000005F271431 ntdll.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: [Callstack] 0x000000005F271431 ntdll.dll!UnknownFunction []
 [2018.06.25-20.39.29:732][  0]LogWindows: Error: 
 [2018.06.25-20.39.29:750][  0]LogExit: Executing StaticShutdownAfterError
 [2018.06.25-20.39.29:751][  0]LogWindows: FPlatformMisc::RequestExit(1)
 [2018.06.25-20.39.29:751][  0]Log file closed, 06/25/18 22:39:29

compoundcloud_cell.cpp:64 是我为 Actor 创建默认子对象的地方。在它的构造函数(compound_particlecomponent_cell.cpp:30)中找到了导致编辑器崩溃的代码。此处记录的行是:

 auto psAsset = ConstructorHelpers::FObjectFinder<UParticleSystem>(TEXT("ParticleSystem'/Game/ParticleSystems/PS_CompoundCloud_SingleCelled.PS_CompoundCloud_SingleCelled'"));

我创建组件的代码片段如下所示:+

std::string center = "CenterSystem";
    UCompound_ParticleComponent_Cell* temp = CreateDefaultSubobject<UCompound_ParticleComponent_Cell>(center.c_str());
    particles.Add(temp);
    RootComponent = temp;

有没有人知道为什么这会突然导致崩溃？我最近在粒子系统上做了很多工作，但名称仍然相同，所以我认为它不应该影响对象查找器。

如果有人能帮我解决这个问题就太好了。提前致谢。

Answer 1

有点支持，但我想我可以尝试从 4.18 更新到 4.19，它实际上解决了问题。因此，如果您遇到类似问题:请尝试升级。

编辑:它的工作时间有限。
到目前为止，我尝试在构造函数中的其他类中加载粒子系统，但每次都遇到访问冲突。

编辑 2:仍然没有回答。长期以来，这一直在减慢该项目的速度。如果有人想看看: https://github.com/GameAboutThings/Lyfe