UnityLinker causes crash when outputting snapshot data for very large projects

Unity: IL2CPP

Fixed

6.2.X

6.1.X

6.0.X

2022.3.X

2021.3.X

Steps to reproduce:

Run a player build using these UnityLinker args:

-enable-snapshot --snapshot-out=c:\snapshot --enable-report --generate-preservations

(There is no reproduction case as the bug just requires a very large project.)

Stack Trace:

Fatal error in Unity CIL Linker
System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.Text.StringBuilder.ToString()
   at System.IO.StreamReader.ReadToEnd()
   at Unity.Linker.Steps.Diagnostic.Reports.ReportGenerationStep.WriteHtmlReport()
   at Unity.Linker.Steps.Diagnostic.Reports.ReportGenerationStep.Process()
   at Mono.Linker.Steps.BaseStep.Process(LinkContext context)
   at Unity.Linker.UnityPipeline.ProcessStep(LinkContext context, IStep step)
   at Mono.Linker.Pipeline.Process(LinkContext context)
   at Unity.Linker.UnityDriver.UnityRun(Boolean noProfilerAllowed, ILogger customLogger)
   at Unity.Linker.UnityDriver.RunDriverWithoutErrorHandling(ILogger customLogger, Boolean noProfilerAllowed)
   at Unity.Linker.UnityDriver.RunDriver()

Notes:

Problem occurs in ReportGenerationStep.WriteHtmlReport where the entire XML report is being read into memory.

Actual results: Build fails

Expected results: Build succeeds

Reproducible with versions: 2021.3.48f1, 2022.3.56f1, 6000.0.34f1, 6000.1.0b2

Not reproducible with versions: -

Can’t test with versions: -

UnityLinker causes crash when outputting snapshot data for very large projects

Unity: IL2CPP

Fixed

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UnityLinker causes crash when outputting snapshot data for very large projects

Unity: IL2CPP

Statuses

Fixed

Resolution Notes

Description

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Have a workaround or additional info about this issue?