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[Android] NullReferenceException on Serialization.CodeGenerator.Call due to stripping level being set to low



Reproduction steps:
1. Open the user's attached project ""
2. Build for Android

Expected result: Scene displays "Success" text
Actual result: A NullReferenceException text is being shown instead (See attached LogcatNullReference.txt)

Reproduces on: 2018.4.24f1, 2019.4.2f1, 2020.1.0b14, 2020.2.0a16

Reproduces with:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00313, Huawei Y6 Ⅱ Compact (HUAWEI LYO-L01), Android 5.1, CPU: MediaTek MT6735, GPU: Mali-T720

-Preserve tags have been added to the "Link.xml"
-Issue does not appear if Stripping Level is set to Disabled
-NullReferenceException is only outputted when building in Mono

  1. Response avatar

    Resolution Note (2020.2.X):

    There is quite a bit of reflection being used in System.Xml and mono and il2cpp work differently here.
    In il2cpp in current project the error happens because TestIXmlSerializable.GetSchema() returns new object and does not set Id on it. Change method to return null and "success" is printed on screen.

    For mono, disable the stripping. You can't ship new games using mono anyway.

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