Unity Issue Tracker - [IL2CPP] Windows builds fails when using VS 2022 17.4.0 Preview

Fixed

Fixed in 2020.3.42f1, 2021.3.14f1, 2022.1.23f1, 2022.2.0b16, 2023.1.0a19

Votes

6

Found in

2020.3.41f1

2021.3.12f1

2022.1.21f1

2022.2.0b13

2023.1.0a16

Issue ID

UUM-17921

Regression

No

[IL2CPP] Windows builds fails when using VS 2022 17.4.0 Preview

Oct 26, 2022

How to reproduce:
1. Download and install Visual Studio 2022 17.4.0 Preview 5.0
2. Open attached project “My Project.zip“, or create an empty project
3. Make sure the IL2CPP is selected as the scripting backend (Project Settings -> Player -> Other Settings -> Scripting Backend)
4. Shouldn't be necessary but can make sure the “Visual Studio preview” install is selected as the External script editor (Edit->Preferences->External Tools -> External Script Editor)
5. Open the Build Settings (Edit > Build Settings…)
6. Build

Expected result: The Player is built successfully
Actual result: The Player build fails with an error message: “Building Library\Bee\artifacts\WinPlayerBuildProgram\ei6vj\6p7s_z_vm6.lump.obj failed”

C:\Program Files\Unity\2023.1.0a16_4a28b8b54318\Data\il2cpp\libil2cpp\utils\Il2CppHashMap.h(71): error C2039: 'hash_compare': is not a member of 'stdext'
C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.34.31932\include\iterator(1426): note: see declaration of 'stdext'
C:\Program Files\Unity\2023.1.0a16_4a28b8b54318\Data\il2cpp\libil2cpp\utils\Il2CppHashMap.h(71): error C2065: 'hash_compare': undeclared identifier
C:\Program Files\Unity\2023.1.0a16_4a28b8b54318\Data\il2cpp\libil2cpp\utils\Il2CppHashMap.h(71): error C2275: 'Key': expected an expression instead of a type
C:\Program Files\Unity\2023.1.0a16_4a28b8b54318\Data\il2cpp\libil2cpp\vm\MetadataCache.cpp(38): error C2976: 'Il2CppReaderWriterLockedHashMap': too few template arguments
C:\Program Files\Unity\2023.1.0a16_4a28b8b54318\Data\il2cpp\libil2cpp\utils\Il2CppHashMap.h(75): note: see declaration of 'Il2CppReaderWriterLockedHashMap'

Reproducible with: 2020.3.41f1, 2021.3.12f1, 2022.1.21f1, 2022.2.0b13, 2023.1.0a16

Tested with: Windows 10 Enterprise

Forum Post where it was reported: [https://forum.unity.com/threads/il2cpp-error-on-building-for-windows.1351589/]
Workaround available here: https://forum.unity.com/threads/workaround-for-building-with-il2cpp-with-visual-studio-2022-17-4.1355570/

Resolution Note (fix version 2023.1.0a19):

Fixed in: 2023.1.0a19
Resolution Note (fix version 2022.2.0b16):

Fixed in: 2022.2.0b16
Resolution Note (fix version 2022.1.23f1):

Fixed in: 2022.1..23f1
Resolution Note (fix version 2021.3.14f1):

Fixed in: 2021.3.14f1
Resolution Note (fix version 2020.3.42f1):

Fixed in: 2020.3.42f1

Comments (26)

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Nov 09, 2022 10:51

A temperate solution to this issue is adding two lines to

IL2CPP\external\google\sparsehash\internal\sparseconfig.h

#define _SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS

#include <hash_map>

before

/* The system-provided hash function including the namespace. */
#define SPARSEHASH_HASH HASH_NAMESPACE::hash_compare

Good luck !