roslyn: Blocker: VS 2015 Update 3 - complete freeze / crash when editing code files (intellisense)

This is a real blocker issue for my team. Since update 3, we cannot edit certain files in our solution anymore - visual studio completely freezes when changing code and then after several seconds it crashes.

This is the output of the windows event log:

Faulting application name: devenv.exe, version: 14.0.25420.1, time stamp: 0x57685d85
Faulting module name: Microsoft.CodeAnalysis.CSharp.ni.dll, version: 1.3.1.60616, time stamp: 0xac5e790e
Exception code: 0xc00000fd
Fault offset: 0x002ced15
Faulting process ID: 0x1414
Faulting application start time: 0x01d1d365a3e416c5
Faulting application path: C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe
Faulting module path: C:\WINDOWS\assembly\NativeImages_v4.0.30319_32\Microsoft.C1d3c2215#\f217b46a2e086bed6974523572037c2c\Microsoft.CodeAnalysis.CSharp.ni.dll
Report ID: 72eedbbc-cd10-4a81-aa31-5684bf1a1bc8
Faulting package full name: 
Faulting package-relative application ID:

Unfortunately I have not been able the create a minimal repro yet (in a new project), It seems to only occur in specific file/project constellations.

Question: Is this issue known? Has somebody been able to provide a minimal repro? Our current workaround is to edit these files in Notepad++ … which sucks as you can imagine 😕

One of my team-members already tried to downgrade to Update2 which resulted in a disaster … (TLDR: Complete reinstall of windows was necessary because everything was broken afterwards)

About this issue

Original URL
State: closed
Created 8 years ago
Reactions: 4
Comments: 31 (8 by maintainers)

Most upvoted comments

The original stack overflow is fixed with #12311, and the microupdate containing that fix is live at https://msdn.microsoft.com/library/mt752379.

Pilchie on Jul 13, 2016

Our team is experiencing the same problem. We have downgraded to update 2.

The crash is a StackOverflowException, with this stacktrace:

>   mscorlib.dll!System.Text.StringBuilder.ExpandByABlock(int minBlockCharCount)    Unknown
    mscorlib.dll!System.Text.StringBuilder.Append(char* value, int valueCount)  Unknown
    mscorlib.dll!System.Text.StringBuilder.AppendHelper(string value)   Unknown
    mscorlib.dll!System.Text.StringBuilder.Append(string value) Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.VisitNamedType(Microsoft.CodeAnalysis.INamedTypeSymbol symbol)  Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.Visit(Microsoft.CodeAnalysis.ISymbol symbol)    Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.VisitNamedType(Microsoft.CodeAnalysis.INamedTypeSymbol symbol)  Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.Visit(Microsoft.CodeAnalysis.ISymbol symbol)    Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.VisitTypeParameter(Microsoft.CodeAnalysis.ITypeParameterSymbol symbol)  Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.Visit(Microsoft.CodeAnalysis.ISymbol symbol)    Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.EncodeGenericTypeInfo(Microsoft.CodeAnalysis.INamedTypeSymbol symbol)   Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.VisitNamedType(Microsoft.CodeAnalysis.INamedTypeSymbol symbol)  Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.Visit(Microsoft.CodeAnalysis.ISymbol symbol)    Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.VisitTypeParameter(Microsoft.CodeAnalysis.ITypeParameterSymbol symbol)  Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.Visit(Microsoft.CodeAnalysis.ISymbol symbol)    Unknown
    Microsoft.CodeAnalysis.Workspaces.dll!Microsoft.CodeAnalysis.SymbolId.Generator.EncodeGenericTypeInfo(Microsoft.CodeAnalysis.INamedTypeSymbol symbol)   Unknown

owoudenberg on Jul 1, 2016

@xeneo I feel your pain so I have uploaded my self builded vsix. You can download it here: Roslyn.VisualStudio.Setup.vsix (MD5: 33e4982535aa4903cfc53064ec8036ad) Just install it, restart vs, and the bug will be gone.

davidroth on Jul 6, 2016

However, @davidroth - I’m not sure that your issue is the same, since your crash is in Microsoft.CodeAnalysis.CSharp.ni.dll, and this stackoverflow is in Microsoft.CodeAnalysis.Workspaces.dll (usually).

@davidroth Can you post the callstack from the “.NET Runtime” event or the info from the Windows Error Reporting (event id 1001) right around the time of the crash?

Pilchie on Jul 1, 2016