[yunqa.de] TDISQLite3MemIniFile EInvalidPointer suspicion
- From: Jared Davison <jared@xxxxxxxxxxxxxxxxxxxxxx>
- To: yunqa@xxxxxxxxxxxxx
- Date: Thu, 12 Nov 2009 13:29:49 +1100
Hello DISqlite3 list. May I ask your assistance?
1. PROBLEM 1
I have been using TDISQLite3MemIniFile. My applications have been
crashing with EInvalidPointer errors and I'm becoming suspicious that
these started when we switch to TDISQLite3MemIniFile from a regular
TMemIniFile component. I was previously using DISQLite3 2.0.3 when i
was getting that. These are quite rare but happen often enough on
these long lived applications to cause serious trouble.
Has anyone else experienced EInvalidPointer too? I dont get very
useful debug information i think possibly because it crashes inside
the C obj code.
I noticed the error once recently in the debugger when i clicked apply
to save some config settings through the TDISQLite3MemIniFile
component. I suspect it happens on read operations too.
2. PROBLEM 2
So, because of the above problems I thought i'd update to the latest
version of DISqlite3 but now i have crashes on the following during
shutdown of my application...
destructor TDISQLite3IniFileDb.Destroy;
begin
sqlite3_finalize(FStmtDeleteKey);
sqlite3_finalize(FStmtEraseSection); // <<<---- this one causes an
access violation in ntdll.RtlIntegerToUnicodeString according to my
Delphi 7 debugger.
Exception Class C00000005 with message 'access violation at
0x77168c39: write of address 0x00000014'
The function TDISQLite3IniFileDb.EraseSection which has set up the
FStmtEraseSection variable so it is initialised and is NOT nil.
I would be grateful of your assistance.
Many Thanks
Jared
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