Maybe you are mixing C malloc/free with sqlite3 memory allocation routines? 
Like allocating from sqlite and then freeing to C or vice versa?

-----Ursprüngliche Nachricht-----
Von: Bob Moran [mailto:bmo...@cicaccess.com]
Gesendet: Mittwoch, 03. September 2014 06:25
An: General Discussion of SQLite Database
Betreff: Re: [sqlite] Cannot retrieve SQLite Db Data Immediately After 
Application Startup

Found more of what the issue is. I noticed that my SQL text was being 
overwritten on the return from the call to prepare_v2.
Stepping through the SQlite3 code I discovered that a malloc call for 500+ 
bytes was returning a pointer 8 bytes below my SQL string.
Don't have the foggiest notion as to why. My string is on the heap. If I wait 
some time before making the call (my program is just waiting for input, then 
the malloc call returns a pointer far removed from my passed in SQL text. Must 
be some kind on Linux issue?

Bob Moran

Continental Access / NAPCO Security Technologies
355 Bayview Ave.
Amityville, N.Y. 11701
631.842.9400 x327

rmo...@cicaccess.com


-----Original Message-----
From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] 
On Behalf Of Roger Binns
Sent: Tuesday, September 02, 2014 12:45 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Cannot retrieve SQLite Db Data Immediately After 
Application Startup

On 29/08/14 12:55, Bob Moran wrote:
> The return code (rc) is SQLITE_OK, but "stmnt" is NULL (0)
>
> if I start the application and wait for at least 1 minute, everything works.

You get NULL back from prepare with SQLITE_OK if the statement doesn't do 
anything.  Examples are empty strings or comments.  Chances are that is 
actually what is happening in your case.

Roger

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