[clang] [Clang][Sema] Avoid pack expansion for expanded empty PackIndexingExprs (PR #92385)

[Younan Zhang via cfe-commits]

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@@ -2157,11 +2157,11 @@ void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
 void ASTStmtWriter::VisitPackIndexingExpr(PackIndexingExpr *E) {
   VisitExpr(E);
   Record.push_back(E->TransformedExpressions);
+  Record.push_back(E->EmptyPack);
   Record.AddSourceLocation(E->getEllipsisLoc());
   Record.AddSourceLocation(E->getRSquareLoc());
   Record.AddStmt(E->getPackIdExpression());
   Record.AddStmt(E->getIndexExpr());
-  Record.push_back(E->TransformedExpressions);
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zyn0217 wrote:

(And I didn't receive any notification from GH for this comment... sorry, I just saw it.)

https://github.com/llvm/llvm-project/pull/92385