Read Of Address Error Delphi
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Access Violation At Address 00000 Read Of Address 00000
of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Delphi, error :“Access violation at address xxxxxxxx. Read of address yyyyyyyy”, at AdoQuery.SQL.Text:=''' up vote -1 down vote favorite 1 "Access violation at address xxxxxxxx. Read of address yyyyyyyy" On this project i have access violation at address 00000000. read of address 00000000 in toad more than 200 procedures like that, but only this procedure gets error (only windows xp).. Procedure than have error : Procedure TfMain.CreateNewDocument(p_money_direction,p_status,p_base:integer); begin With fMain.ADOTemp do Begin SQL.Clear; SQL.Text:='INSERT INTO documents '+ '(document_date,fk_id_status,money_direction,'+ 'paid,addition,saving,fk_id_base,fk_id_user)'+ 'VALUES '+ '(CONVERT(DATE,:pdocument_date,103),:pfk_id_status,'+ ':pmoney_direction,0,0,0,:pfk_id_base,:pfk_id_user)'; Parameters.ParamByName('pdocument_date').Value:=Date; Parameters.ParamByName('pfk_id_status').Value:=p_status; Parameters.ParamByName('pmoney_direction').Value:=p_money_direction; Parameters.ParamByName('pfk_id_base').Value:=p_base; Parameters.ParamByName('pfk_id_user').Value:=fMain.ApplicationVariablers.user_id; ExecSQL; End; end; Error at : SQL.Text:='INSERT INTO documents '+ '(document_date,fk_id_status,money_direction,'+ 'paid,addition,saving,fk_id_base,fk_id_user)'+ 'VALUES '+ '(CONVERT(DATE,:pdocument_date,103),:pfk_id_status,'+ ':pmoney_direction,0,0,0,:pfk_id_base,:pfk_id_user)'; Debuingging process, error at line 1907 : sql delphi share|improve this question edited Nov 18 '13 at 13:23 TLama 53.6k14102169 asked Nov 18 '13 at 12:58 user3004668 3614 Providing the real error message could have helped. Why keep it from us? –David Heffernan Nov 18 '13 at 13:19 @David, it was on the linked screenshot and says something related to Visual C++ runtime... –TLama Nov 18 '13 at 13:22 1 You have some nice memory leaks there, always cleanup what you create... What is bugging me is that the code in the screenshot is no
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Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join http://stackoverflow.com/questions/20048406/delphi-error-access-violation-at-address-xxxxxxxx-read-of-address-yyyyyyyy them; it only takes a minute: Sign up How to track down access violation “at address 00000000” up vote 25 down vote favorite 9 I know how to create a .map file to track down access violation errors when the error message includes an actual address. But what if the error message says Access violation at address 00000000. Read of http://stackoverflow.com/questions/2237028/how-to-track-down-access-violation-at-address-00000000 address 00000000. Where do I start looking for the cause of this problem... ? delphi share|improve this question asked Feb 10 '10 at 13:21 ObiWanKenobi 4,51673447 1 That reminds me of under Turbo C, "Null pointer assignment" when it is managed in the wrong way... –t0mm13b Feb 10 '10 at 13:30 3 Is it reproducable? If not, add a tool like madExcept and wait for error reports else use the debugger and look at the stack trace. –Lieven Keersmaekers Feb 10 '10 at 13:37 This is from the old Turbo C days, Under the debugger,Add a watch to the pointer variable pointing to location 0, the just executed line when stepping into it, that caused the pointer variable pointing to location 0 change value is the line that messed up. Mostly a pointer error... –t0mm13b Feb 10 '10 at 13:46 Tommie, there could be many pointer variables holding the address value zero. Why set a watch on any of them? Changing one of them would not cause this error. This
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