Prevent plugin from crash on v8.3 and later version: Recompile x64 plugins with new header

donho

Dear all plugin authors,

You might notice that Notepad++ v8.3 x64 binary will support opening 2GB+ files.

If your plugins are also released in x64 binary, you should replace Sci_Position.h by the new one (or just replace ~~typedef long Sci_PositionCR;~~ by typedef intptr_t Sci_PositionCR; in Sci_Position.h of your project), then recompile your plugins.

It can prevent from crash and to have the best compatibility with Notepad++ v8.3 and later versions.

Feel free to leave your questions/concerning requests here. I will do my best to answer your questions/requests.

Edit: Once you release a new version, please update nppPluginList with your new release, so users can update the incompatible version of plugins to the new ones directly via their new version of Notepad++.

chcg

@donho Shouldn’t it be at least 8.3 with such a breaking change?

rdipardo

@donho, @chcg

Don’t forget the x64 plugins that target .NET Framework, for example:

These are based on a .NET plugin template that re-implements the Scintilla interface in C#.

Looking at the template code, it seems character ranges are defined using the int type:

  [StructLayout(LayoutKind.Sequential)]
  public struct CharacterRange
  {
      public CharacterRange(int cpmin, int cpmax) { cpMin = cpmin; cpMax = cpmax; }
      public int cpMin;
      public int cpMax;
  }

That will surely overflow as int is an alias for the Common Language Runtime’s Int32 type.

Michael Vincent

@rdipardo said in Recompile your x64 plugins with new header:

Don’t forget the x64 plugins that target .NET Framework, for example:

Good point and I’ve looked at some. I think (correct me if I’m wrong) the crash only manifests if you actually use a Scintilla call that would return a Sci_TextRange object and looking on Scintilla Docs, there seem to be only 2:

I checked my version of Markdown Panel and although the “bad” Scintilla interface code is there, the plugin never uses / calls it and in my daily use of Notepad++ (using the latest dev build) Markdown Panel has not crashed for me.

On the other hand, CsvQuery does crash Notepad++ and it does indeed make a getTextRange() call here and here. An issue has been opened.

I can’t speak for the rest as I don’t use them nor do I know C# programming in the least.

Cheers.

rdipardo

CS-Script is confirmed vulnerable. Haven’t tried the others yet.

I’ve taken the issue upstream, but even if NppPlugin.NET gets patched (a new version has been in pre-release for over a year), there’s no telling when/if the dependent plugins will upgrade. (At least the migration path looks easy enough.)

rdipardo

A tracking issue has been opened.