Return a copy of the latest error message. Return `""` in case of ill-formed utf-8 or null. TODO: represent error state in types: "If a prior API call failed but the most recent API call succeeded, the return value from sqlite3_errcode() is undefined." cf `ffi::sqlite3_errmsg`.
(&mut self)
source not stored for this graph (policy: none)
nothing calls this directly
no outgoing calls
no test coverage detected