Assertion failed 'markedLastLoop && markedCurrLoop'

[BruceForstall]

pipeline: runtime-coreclr jitstress-random
job: coreclr windows x86 Checked jitstress_random_1
test: managed/Compilation/Compilation/Compilation.cmd

set DOTNET_TieredCompilation=0
set DOTNET_JitStress=2be

C:\h\w\B8160A1E\p\watchdog.exe" 119 "C:\h\w\B8160A1E\p\corerun.exe" -p "System.Reflection.Metadata.MetadataUpdater.IsSupported=false" -p "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization=true"  Managed.dll 
19:49:13.347 Running test: managed/Compilation/Compilation/Compilation.cmd

Assert failure(PID 5788 [0x0000169c], Thread: 5524 [0x1594]): Assertion failed 'markedLastLoop && markedCurrLoop' in 'Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol:ForceComplete(Microsoft.CodeAnalysis.SourceLocation,System.Threading.CancellationToken):this' during 'Generate code' (IL size 877; hash 0xba50a687; FullOpts)

    File: D:\a\_work\1\s\src\coreclr\jit\emit.cpp:6067
    Image: C:\h\w\B8160A1E\p\corerun.exe

https://dev.azure.com/dnceng-public/public/_build/results?buildId=801287&view=ms.vss-test-web.build-test-results-tab

@dotnet/jit-contrib

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[JulieLeeMSFT]

@BruceForstall PTAL.

[amanasifkhalid]

@BruceForstall #107371 or #107403 might have exposed this

[BruceForstall]

@BruceForstall #107371 or #107403 might have exposed this

I can repro the failure both before and after these PRs. (I tried 42f3dce, just before the first of those)