Circular project reference keeps crashing Klr.exe

[anandparanjape]

In projectk projects, you can add references using add reference dialog.
If user adds circular reference then klr.exe keeps on crashing.
User can close solution from VS. as workaround to get out of this situation is to open project.json and remove this circular reference.
Package Manager log shows error like below. (this was fixed (#138) before but due to recent DTH work, issue resurfaced at another location.)

System.Exception: TODO: Circular dependency references not supported. Package 'WebApplication1'. at Microsoft.Framework.PackageManager.RestoreOperations.<>c__DisplayClass3.b__5(String name) at Microsoft.Framework.PackageManager.RestoreOperations.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Microsoft.Framework.PackageManager.RestoreOperations.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Microsoft.Framework.PackageManager.RestoreCommand.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Framework.PackageManager.RestoreCommand.d__1.MoveNext() ---------- Restore failed TODO: Circular dependency references not supported. Package 'WebApplication1'.

[muratg]

@AnandJP Circular dependencies are not supported. This is actually called out in the exception message. If there are other issues, please refile. Thanks.

[muratg]

Circular dependencies are not supported right now, but additionally there are 2 other issues.

• KLR crash. (This is actually due to a stack overflow, and not because of the exception above)
• KPM restore is actually installing some packages with Circular Dependencies if the second dependency is not already on disk. (If it is on disk, it throws the error above)

These two issues are tracked here: #997