Fix to handle EXPORT_SYMBOL_FLAGS_FUNCTION_VARIANT

Author: p-x9

Sources/MachOKit/Extension/TrieTreeProtocol+.swift

@@ -28,7 +28,8 @@ extension TrieTreeProtocol where Content == ExportTrieNodeContent {
                     ordinal: content.ordinal,
                     importedName: content.importedName,
                     stub: content.stub,
-                    resolverOffset: content.resolver
+                    resolverOffset: content.resolver,
+                    functionVariantTableIndex: content.functionVariantTableIndex
                 )
             }
     }
@@ -48,7 +49,8 @@ extension TrieTreeProtocol where Content == ExportTrieNodeContent {
             ordinal: content.ordinal,
             importedName: content.importedName,
             stub: content.stub,
-            resolverOffset: content.resolver
+            resolverOffset: content.resolver,
+            functionVariantTableIndex: content.functionVariantTableIndex
         )
     }
 
@@ -67,7 +69,8 @@ extension TrieTreeProtocol where Content == ExportTrieNodeContent {
                 ordinal: content.ordinal,
                 importedName: content.importedName,
                 stub: content.stub,
-                resolverOffset: content.resolver
+                resolverOffset: content.resolver,
+                functionVariantTableIndex: content.functionVariantTableIndex
             )
         }
     }

Sources/MachOKit/Model/Export/ExportTrieEntry.swift

@@ -19,6 +19,8 @@ public struct ExportTrieNodeContent {
     public var stub: UInt?
     public var resolver: UInt?
 
+    public var functionVariantTableIndex: UInt?
+
     public var symbolOffset: UInt?
 }
 
@@ -67,6 +69,18 @@ extension ExportTrieNodeContent: TrieNodeContent {
 
             content.stub = stub
             content.resolver = resolver
+        } else if flags.contains(.function_variant) {
+            let (symbolOffset, ulebOffset) = basePointer
+                .advanced(by: nextOffset)
+                .readULEB128()
+            nextOffset += ulebOffset
+            let (functionVariantTableIndex, ulebOffset2) = basePointer
+                .advanced(by: nextOffset)
+                .readULEB128()
+            nextOffset += ulebOffset2
+
+            content.symbolOffset = symbolOffset
+            content.functionVariantTableIndex = functionVariantTableIndex
         } else {
             let (value, ulebOffset) = basePointer
                 .advanced(by: nextOffset)

Sources/MachOKit/Model/ExportedSymbol.swift

@@ -21,6 +21,8 @@ public struct ExportedSymbol {
 
     public var stub: UInt?
     public var resolverOffset: UInt?
+
+    public var functionVariantTableIndex: UInt?
 }
 
 extension ExportedSymbol {