Merge pull request #21037 from jketema/swift-6.2.3

Swift: Update to Swift 6.2.3

swift/extractor/infra/SwiftTagTraits.h

@@ -287,6 +287,7 @@ MAP(swift::TypeBase, TypeTag)
     MAP(swift::BuiltinNonDefaultDistributedActorStorageType, void)  // Does not appear in AST/SIL, only used during IRGen
     MAP(swift::BuiltinFixedArrayType, BuiltinFixedArrayTypeTag)
     MAP(swift::BuiltinUnboundGenericType, void)  // Only used during type resolution
+    MAP(swift::BuiltinImplicitActorType, void)  // SIL type
   MAP(swift::TupleType, TupleTypeTag)
   MAP(swift::ReferenceStorageType, ReferenceStorageTypeTag)
   MAP(swift::WeakStorageType, WeakStorageTypeTag)

swift/extractor/translators/ExprTranslator.cpp

@@ -538,7 +538,7 @@ void ExprTranslator::fillSelfApplyExpr(const swift::SelfApplyExpr& expr,
 
 void ExprTranslator::fillLookupExpr(const swift::LookupExpr& expr, codeql::LookupExpr& entry) {
   entry.base = dispatcher.fetchLabel(expr.getBase());
-  if (expr.hasDecl()) {
+  if (expr.hasDecl() && !expr.getDecl().getDecl()->isUnavailable()) {
     entry.member = dispatcher.fetchLabel(expr.getDecl().getDecl());
   }
 }

swift/ql/lib/change-notes/2025-12-18-swift-6.2.3.md

@@ -0,0 +1,4 @@
+---
+category: majorAnalysis
+---
+* Upgraded to allow analysis of Swift 6.2.3.