The MVID is not added to the sections

[mattleibow]

Looking at the code use a C# build: https://github.com/dotnet/roslyn/blob/main/src/Compilers/Core/MSBuildTask/MvidReader.cs

I see it scans the sections for a .mvid to locate the MVID. If I open, edit, and then write the module, I lose the .mvid section.

When debugging, I see that before saving, there are 4 sections, after there are 3.

[mattleibow]

Looking at the sections builder in the writer, I do only see 3 being written:

cecil/Mono.Cecil.PE/ImageWriter.cs

Lines 116 to 134 in 56d4409

	void BuildSections ()
	{
	var has_win32_resources = win32_resources != null;
	if (has_win32_resources)
	sections++;
	text = CreateSection (".text", text_map.GetLength (), null);
	var previous = text;
	if (has_win32_resources) {
	rsrc = CreateSection (".rsrc", (uint) win32_resources.length, previous);
	PatchWin32Resources (win32_resources);
	previous = rsrc;
	}
	if (has_reloc)
	reloc = CreateSection (".reloc", 12u, previous);
	}

I see the .mvid section being loaded in the module image before