System.Data.SQLite

I am close connection another thread;

System.AccessViolationException in System.Data.SQLite.dl

in System.Data.SQLite.UnsafeNativeMethods.sqlite3_close_interop(IntPtr db)
in System.Data.SQLite.SQLiteBase.CloseConnection(SQLiteConnectionHandle hdl, IntPtr db)
in System.Data.SQLite.SQLiteConnectionHandle.ReleaseHandle()
in System.Runtime.InteropServices.CriticalHandle.Cleanup()
in System.Data.SQLite.SQLite3.Close(Boolean canThrow)
in System.Data.SQLite.SQLiteConnection.Close()
in System.Data.SQLite.SQLiteConnection.Dispose(Boolean disposing)
in System.Data.SQLite.SQLiteConnection.Dispose()

Is more than one thread at a time using System.Data.SQLite?

Are any objects being shared by more than one thread?

Is it possible to get a native stack trace?

I have a problem using
https://github.com/abiliojr/fts5-snowball/blob/master/src/fts5stemmer.c

StackTrace:
   in System.Data.SQLite.UnsafeNativeMethods.sqlite3_close_interop(IntPtr db)
   in System.Data.SQLite.SQLiteBase.CloseConnection(SQLiteConnectionHandle hdl, IntPtr db)
   in System.Data.SQLite.SQLiteConnectionHandle.ReleaseHandle()
   in System.Runtime.InteropServices.CriticalHandle.Cleanup()
   in System.Data.SQLite.SQLite3.Close(Boolean canThrow)
   in System.Data.SQLite.SQLiteConnection.Close()
   in System.Data.SQLite.SQLiteConnection.Dispose(Boolean disposing)
   in System.Data.SQLite.SQLiteConnection.Dispose()
   in ConsoleApplication1.Program.<Test1>d__2.MoveNext() in D:\test\ConsoleApplication1\ConsoleApplication1\Program.cs:строка 125

How does the "fts5stemmer.c" code impact this issue?  Does the issue only occur
when using this extension?

That is the same stack trace as before.  It only shows the managed call frames.

In order to get the native stack trace, you would need to enable native debugging
in Visual Studio or WinDbg.

Example code with problem: http://pastebin.com/9CB4Mn2J
src and binary fts5 stemmer: https://yadi.sk/d/Nwpj1stayNgWx

problem in a function call before the "destroyStemmer" function of the "ftsSnowballTokenize"
I am add printf function call with random number.
https://yadi.sk/d/64sDveC0yPwgT

This is most likely an issue with the external project "fts5-snowball".