MemoryMapped file in Unity 2017.2b8 crashes on iOS

[User255]

Is MemoryMapped file supported on iOS? It crashes for me on the line :

using(MemoryMappedFile file = MemoryMappedFile.CreateFromFile(filePath, FileMode.OpenOrCreate, "MyMap", 10 * 1024*1024))

with stacktrace:

#0 0x00000001808da4a8 in std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::~basic_string() ()
#1 0x0000000100b22e48 in il2cpp::metadata::GenericArrayMethod::~GenericArrayMethod() [inlined] at /Users/builduser/buildslave/unity/build/External/il2cpp/il2cpp/libil2cpp/metadata/ArrayMetadata.cpp:98
#2 0x0000000100b22e44 in il2cpp::metadata::GenericArrayMethod::~GenericArrayMethod() [inlined] at /Users/builduser/buildslave/unity/build/External/il2cpp/il2cpp/libil2cpp/metadata/ArrayMetadata.cpp:98
#3 0x0000000100b22e44 in std::__1::allocatoril2cpp::metadata::GenericArrayMethod::destroy(il2cpp::metadata::GenericArrayMethod*) [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/memory:1795
#4 0x0000000100b22e44 in void std::__1::allocator_traits<std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::__destroyil2cpp::metadata::GenericArrayMethod(std::__1::integral_constant<bool, true>, std::__1::allocatoril2cpp::metadata::GenericArrayMethod&, il2cpp::metadata::GenericArrayMethod*) [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/memory:1668
#5 0x0000000100b22e44 in void std::__1::allocator_traits<std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::destroyil2cpp::metadata::GenericArrayMethod(std::__1::allocatoril2cpp::metadata::GenericArrayMethod&, il2cpp::metadata::GenericArrayMethod*) [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/memory:1536
#6 0x0000000100b22e44 in std::__1::__vector_base<il2cpp::metadata::GenericArrayMethod, std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::__destruct_at_end(il2cpp::metadata::GenericArrayMethod*) [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/vector:424
#7 0x0000000100b22e30 in std::__1::__vector_base<il2cpp::metadata::GenericArrayMethod, std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::clear() [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/vector:368
#8 0x0000000100b22e30 in std::__1::__vector_base<il2cpp::metadata::GenericArrayMethod, std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::~__vector_base() [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/vector:451
#9 0x0000000100b22e28 in std::__1::vector<il2cpp::metadata::GenericArrayMethod, std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::~vector() [inlined] at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/iterator:1244
#10 0x0000000100b22e28 in std::__1::vector<il2cpp::metadata::GenericArrayMethod, std::__1::allocatoril2cpp::metadata::GenericArrayMethod >::~vector() at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/External/NonRedistributable/BuildEnvironment/builds/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/…/include/c++/v1/iterator:1244
#11 0x00000001003946c4 in MemoryMapImpl_OpenFileInternal_m2256927951 [inlined] at /Volumes/MacShare/2017_2b/Classes/Native/Bulk_System.Core_0.cpp:3482
#12 0x00000001003946a4 in ::MemoryMapImpl_OpenFile_m3358129903(RuntimeObject *, String_t *, int32_t, String_t *, int64_t *, int32_t, int32_t, const RuntimeMethod *) at /Volumes/MacShare/2017_2b/Classes/Native/Bulk_System.Core_0.cpp:3716
#13 0x0000000100394794 in ::MemoryMappedFile_CreateFromFile_m2236677830(RuntimeObject *, String_t *, int32_t, String_t *, int64_t, int32_t, const RuntimeMethod *) at /Volumes/MacShare/2017_2b/Classes/Native/Bulk_System.Core_0.cpp:3846
#14 0x000000010002a5b8 in ::Reference_Serialize_m3472583347(RuntimeObject *, Reference_t3342691873 , String_t , const RuntimeMethod ) at /Volumes/MacShare/2017_2b/Classes/Native/Bulk_Assembly-CSharp_0.cpp:3754
#15 0x000000010002bf10 in ::Serialization_Start_m1386473517(Serialization_t1376424296 , const RuntimeMethod ) at /Volumes/MacShare/2017_2b/Classes/Native/Bulk_Assembly-CSharp_0.cpp:4333
#16 0x0000000100644e20 in RuntimeInvoker_Void_t1841601450(void ()(), MethodInfo const, void, void) at /Volumes/MacShare/2017_2b/Classes/Native/Il2CppInvokerTable.cpp:30732

2017.1 behaves the same

[joncham]

Yes, we intend for this to work. Please file a bug.

[User255]

Done (Case 947410)