Build error when compiling using IL2CPP for Android if project uses static NetworkVariables

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#3,101 5 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
android, csharp
Domain
game-dev, networking

Research direction

Start with the reported static NetworkVariable reproduction in a NetworkBehaviour, then build the project for Android with IL2CPP and Mono to compare the results. Trace the generated IL2CPP output and the reported missing members; done means the IL2CPP Android build completes without errors.

Written by the indexing model from the issue text.

Description

priority:medium stat:imported type:docs
Description

Build error when compiling using IL2CPP for Android if project uses static NetworkVariables. This behaviour happens when attempting to build using IL2CPP scripting backend and building to Android. Building to Android using Mono builds successfully with no errors, leading me to believe this is a bug/unintended.

Reproduce Steps
  • Declare a static NetworkVariable in a NetworkBehaviour script. (public static NetworkVariable<int> in my case)
  • Set scripting backend to IL2CPP
  • Set build platform to Android
  • Build
  • Error displayed as shown in Additional Context section
Actual Outcome

Build fails with two error messages in console.

Expected Outcome

Build should compile successfully with no errors.

Screenshots

Error in Console:
image

Environment
  • OS: [Windows 10]
  • Unity Version: [2022.3.9f1]
  • Netcode Version: [1.5.2]
  • Netcode Commit: [e.g. https://github.com/Unity-Technologies/com.unity.netcode.gameobjects/commit/ba418fa5b600ad9eb61fab0575f12fbecc2c6520]
Additional Context

Full Error Logs:

Building Library\Bee\artifacts\Android\iz17e\25857ix1c827.o failed with output:
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5692,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_0 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5708,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_3 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5711,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_4 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5714,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_6 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5717,78): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_7 = __this->___OtherClientPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5733,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_10 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5736,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_11 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5739,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_13 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
8 errors generated.

UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

Building Library\Bee\artifacts\Android\d8kzr\25857ix1c827.o failed with output:
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5692,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_0 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5708,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_3 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5711,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_4 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5714,78): error: no member named '___HostPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_6 = __this->___HostPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5717,78): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_7 = __this->___OtherClientPlayerHealth;
                                                                                   ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5733,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_10 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5736,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_11 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
L:\Career\Development\Unity\GitHub\PrototypeCRF\Library\Bee\artifacts\Android\il2cppOutput\cpp\Assembly-CSharp.cpp(5739,79): error: no member named '___OtherClientPlayerHealth' in 'HubManager_t257E0CCDF9E261EA4899F86EEF4B1C6AAEEF8922'
                NetworkVariable_1_t72006E2365F7131BBF61213343C271666361F504* L_13 = __this->___OtherClientPlayerHealth;
                                                                                    ~~~~~~  ^
8 errors generated.

UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
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