From 67d9fd3f073401a59d3a97b3db82178f25c3ca75 Mon Sep 17 00:00:00 2001
From: Martin Evans <martindevans@gmail.com>
Date: Sun, 25 May 2025 00:24:11 +0100
Subject: [PATCH] Added support for `DataCount` section in module loading

---
 WebAssembly/Module.cs  |  6 ++++++
 WebAssembly/Section.cs | 12 +++++++++---
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/WebAssembly/Module.cs b/WebAssembly/Module.cs
index 7e679936..6d5509da 100644
--- a/WebAssembly/Module.cs
+++ b/WebAssembly/Module.cs
@@ -348,6 +348,12 @@ public static Module ReadFromBinary(Stream input)
                         }
                         break;
 
+                    case Section.DataCount: //Optional section, indicates the expected length of the data segment vector
+                        {
+                            reader.ReadUInt32();
+                        }
+                        break;
+
                     default:
                         throw new ModuleLoadException($"Unrecognized section type {id}.", preSectionOffset);
                 }
diff --git a/WebAssembly/Section.cs b/WebAssembly/Section.cs
index f34f877a..47ecd01c 100644
--- a/WebAssembly/Section.cs
+++ b/WebAssembly/Section.cs
@@ -1,4 +1,6 @@
-namespace WebAssembly;
+using System;
+
+namespace WebAssembly;
 
 /// <summary>
 /// The standard section identifiers.
@@ -52,10 +54,14 @@ public enum Section : byte
     /// <summary>
     /// Data segments.
     /// </summary>
-    Data
+    Data,
+    /// <summary>
+    /// Optional segment which indicates the number of sata segments
+    /// </summary>
+    DataCount,
 }
 
 static class SectionExtensions
 {
-    public static bool IsValid(this Section section) => section <= Section.Data;
+    public static bool IsValid(this Section section) => section <= Section.DataCount;
 }