From 7fe6b5b2fdea730658a9957da357ca5868c99158 Mon Sep 17 00:00:00 2001
From: Max Charlamb <44248479+max-charlamb@users.noreply.github.com>
Date: Wed, 12 Aug 2026 10:06:07 -0400
Subject: [PATCH] Emit version 2 for NativeAOT managed data descriptor

Keep the ILC-generated managed type sub-descriptor compatible with the frozen .NET 11 data descriptor format.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 95c4aedd-f09e-42d7-8c9f-f439297576a6
---
 .../Compiler/DependencyAnalysis/ManagedDataDescriptorNode.cs    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/ManagedDataDescriptorNode.cs b/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/ManagedDataDescriptorNode.cs
index 696810e9629cc7..c8930fa8c6d339 100644
--- a/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/ManagedDataDescriptorNode.cs
+++ b/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/ManagedDataDescriptorNode.cs
@@ -98,7 +98,7 @@ private static byte[] BuildJsonDescriptor(NodeFactory factory)
             using (var writer = new Utf8JsonWriter(stream))
             {
                 writer.WriteStartObject();
-                writer.WriteNumber("version", 0);
+                writer.WriteNumber("version", 2);
                 writer.WriteString("baseline", "empty");
 
                 writer.WriteStartObject("types");