Promote sqlite 3.7.13-1 from test status?

Daniel Colascione
Sat Nov 17 05:15:00 GMT 2012

On 8/16/2012 12:41 AM, Achim Gratz wrote:
> $ sqlite3
> SQLite version 3.7.13 2012-06-11 02:05:22
> Enter ".help" for instructions
> Enter SQL statements terminated with a ";"
> Error: unable to open database file
> sqlite>
> Since I can't reproduce the problem in the debugger anymore, it will be
> difficult to impossible to find out what's causing this (at least for me).  Just
> like the problem with TortoiseSVN these are indications IMHO that there's a race
> somewhere between calls from the Cygwin DLL and Windows file locking functions.
>  I can't rule out BLODA either.

I found the problem: sqlite is trying to create temporary files in the Windows
directory. It's doing that because the internal "getTempname" function is
scanning the Windows environment table for TMP and TEMP, and (because Cygwin
hasn't synchronized the Windows environment with the Cygwin one) doesn't find a
temporary directory, falling back to C:\Windows. You don't see the problem under
the debugger or under strace because both tools synchronize the Windows
environment with the Cygwin one before starting SQLite.

You can work around the problem by synchronizing the environment yourself using
cygwin_internal (CW_SYNC_WINENV) or by explicitly telling SQLite where it should
store its temporary files using 'PRAGMA temp_store_directory="/tmp";'.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 258 bytes
Desc: OpenPGP digital signature
URL: <>

More information about the Cygwin mailing list