Repro steps: 1. open a file 2. switch to hex-editing mode 3. change hex values 4. press Undo button in the upper toolbar
at this point PSPad will report error: Access violation at address 00407247 in module 'PSPad.exe'. Read of address 07838517. Exception description: Access violation at address 00407247 in module 'PSPad.exe'. Read of address 07838517. Exception class: EAccessViolation Exception address: 00407247 -------------------------------------------------------------------------------- -------------------- Stack list, generated 26/02/2019 16:48:04 [00407247] System.Move + $67 [00689179] Vcl.Controls.TWinControl.MainWndProc + $41 [00740BFB] MPHexEditor.TCustomMPHexEditor.WriteBuffer (Line 7489, "MPHexEditor.pas" + 2) + $12 [0074A8EC] MPHexEditorEx.TMPHexEditorEx.WriteBuffer (Line 2651, "MPHexEditorEx.pas" + 1) + $6 [0073BB69] MPHexEditor.TCustomMPHexEditor.InternalInsertBuffer (Line 5089, "MPHexEditor.pas" + 14) + $D [007429C5] MPHexEditor.TMPHUndoStorage.Undo (Line 8585, "MPHexEditor.pas" + 31) + $30 [0073FED2] MPHexEditor.TCustomMPHexEditor.Undo (Line 7097, "MPHexEditor.pas" + 0) + $6 [009ABDF9] uMain.TfPSPad.aUndoExecute (Line 5301, "uMain.pas" + 2) + $F [009BC864] uMain.TfPSPad.ActionListExecute (Line 11248, "uMain.pas" + 11) + $7 [00547EAC] System.Actions.TContainedActionList.ExecuteAction + $70 [00409B26] System.@CallDynaInst + $6 [0054AD3D] Vcl.ActnList.TCustomAction.Execute + $69 [004D8DB7] System.Classes.TBasicActionLink.Execute + $13 [00685624] Vcl.Controls.TControl.Click + $5C [005B80BC] Vcl.ComCtrls.TToolButton.Click + $0 [00685AEF] Vcl.Controls.TControl.WMLButtonUp + $77 [006850E2] Vcl.Controls.TControl.WndProc + $2BE [004D9CA4] System.Classes.StdWndProc + $14 [00684D1C] Vcl.Controls.TControl.Perform + $24 [0068925A] Vcl.Controls.GetControlAtPos + $AA [00689322] Vcl.Controls.TWinControl.ControlAtPos + $A6 [00684D1C] Vcl.Controls.TControl.Perform + $24 [006893F0] Vcl.Controls.TWinControl.IsControlMouseMsg + $B0 [006899F8] Vcl.Controls.TWinControl.WndProc + $49C [005BA1B1] Vcl.ComCtrls.TToolBar.UpdateButtonState + $51 [005BA1F2] Vcl.ComCtrls.TToolBar.UpdateButtonStates + $36 [005BCC28] Vcl.ComCtrls.TToolBar.WndProc + $244 [00689164] Vcl.Controls.TWinControl.MainWndProc + $2C [004D9CA4] System.Classes.StdWndProc + $14 [0065987F] Vcl.Forms.TApplication.ProcessMessage + $F3 [006598C2] Vcl.Forms.TApplication.HandleMessage + $A [00659BF5] Vcl.Forms.TApplication.Run + $C9 [009E7A8E] PSPad.PSPad (Line 98, "PSPad.dpr" + 40) + $7 -------------------------------------------------------------------------------- -------------------- Program : C:\Users\Luca\Util\pspad\PSPad.exe 5.0.1 (312) System : Windows 10 Home Edition x64, Version: 10.0, Build: 4563, Processor: Intel, Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, 2200 MHz MMX Display : 1920x1080 pixels, 32 bpp PPI: 96 -------------------------------------------------------------------------------- -------------------- Active Controls Hierarchy: TMPHexEditorEx "" TfChildEdit "fChildEdit_Z7333154" -------------------------------------------------------------------------------- -------------------- -- <https://forum.pspad.com/read.php?2,71173,71173> PSPad freeware editor https://www.pspad.com
