Unity Issue Tracker - File operations fail when relative path is longer than MAX_PATH, but its absolute path is shorter than MAX

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Votes

0

Found in

2017.3.0a1

2018.1.9f2

2018.3.0a1

2019.1.0a1

2019.2.0a1

Issue ID

1115524

Regression

No

File operations fail when relative path is longer than MAX_PATH, but its absolute path is shorter than MAX_PATH

Windows

-

Jan 09, 2019

How to reproduce:
1. Open user's attached project
2. Enter play mode

Expected result: File gets created in "Assets/" + 32x("../Assets/") + "test.unity3d"
Actual result: Operation fails and prints our the error

Reproducible with: 2017.4.18f1, 2018.3.3f1, 2019.1.0a14, 2019.2.0a1

Workaround: use fileInfo.FullName as path for BuildAssetBundle()

Errors:
- Assertion failed on expression: 'm_ManagersToReset.empty()'
UnityEditor.BuildPipeline:BuildAssetBundle(Object, Object[], String, BuildAssetBundleOptions, BuildTarget)
LongPathName:Start() (at Assets/Scripts/LongPathName.cs:31)

- Failed to replace file Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/../Assets/test.unity3d
UnityEditor.BuildPipeline:BuildAssetBundle(Object, Object[], String, BuildAssetBundleOptions, BuildTarget)
LongPathName:Start() (at Assets/Scripts/LongPathName.cs:31)

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