On Thu, Mar 10, 2016 at 5:26 PM, Richard Hipp <drh at sqlite.org> wrote:
> Perhaps your in-memory VFS was relying on some unspecified behavior > that changed? .... Some tests finally led to the source of my problems. When I implemented the handlers of vfs interface before, I made xFileControl return SQLITE_ERROR instead of SQLITE_NOTFOUND. For whatever reasons sqlite versions below 3.8.3 allowed me to do this in some of the usage contexts. Today when I tested I saw that querying PRAGMA Encoding in 3.7.11 also gave an error even before any write-related queries. So in my initial case probably some minor logic change in 3.8.3 led to a critical xFileControl request while 3.8.2 was ok with the wrong implementation.
