Bug 1253 - Hex editor crashes MD when deleting everything
Summary: Hex editor crashes MD when deleting everything
Status: RESOLVED FIXED
Alias: None
Product: Xamarin Studio
Classification: Desktop
Component: Text Editor ()
Version: Trunk
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Mike Krüger
URL:
Depends on:
Blocks:
 
Reported: 2011-10-05 07:30 UTC by Rolf Bjarne Kvinge [MSFT]
Modified: 2011-10-11 10:52 UTC (History)
1 user (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED FIXED

Description Rolf Bjarne Kvinge [MSFT] 2011-10-05 07:30:19 UTC
Repro:

echo abc > data

open the 'data' file using the hex editor in MD.
select everything (ctrl-a)
hit backspace

System.NullReferenceException: Object reference not set to an instance of an object
  at Mono.MHex.Data.PieceTable.Remove (Int64 offset, Int64 length) [0x0006c] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex.Data/PieceTable.cs:275 
  at Mono.MHex.Data.HexEditorData.Remove (Int64 offset, Int64 count) [0x00011] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex.Data/HexEditorData.cs:171 
  at Mono.MHex.Data.HexEditorData.Remove (ISegment segment) [0x00000] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex.Data/HexEditorData.cs:164 
  at Mono.MHex.Data.HexEditorData.DeleteSelection () [0x0003b] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex.Data/HexEditorData.cs:266 
  at Mono.MHex.DeleteActions.Backspace (Mono.MHex.Data.HexEditorData data) [0x0000b] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex/DeleteActions.cs:37 
  at Mono.MHex.SimpleEditMode.HandleKeypress (Key key, UInt32 unicodeChar, ModifierType modifier) [0x00019] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex/SimpleEditMode.cs:183 
  at Mono.MHex.Data.EditMode.InternalHandleKeypress (Mono.MHex.HexEditor editor, Key key, UInt32 unicodeChar, ModifierType modifier) [0x00007] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex.Data/EditMode.cs:46 
  at Mono.MHex.HexEditor.OnKeyPressEvent (Gdk.EventKey evt) [0x00016] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.HexEditor/Mono.MHex/HexEditor.cs:683 
  at Gtk.Widget.keypressevent_cb (IntPtr widget, IntPtr evnt) [0x00000] in <filename unknown>:0 

and MD exits.
Comment 1 Mike Krüger 2011-10-11 10:52:15 UTC
fixed.