[clang] [Clang] [Sema] Improve handling of multidimensional subscript operator for builtin types (PR #187828)

[via cfe-commits]

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@@ -5146,13 +5147,20 @@ ExprResult Sema::ActOnArraySubscriptExpr(Scope *S, Expr *base,
   // The above statement indicates that x[] can be used with one or more array
   // indices. In this case, i=p->x[a][b] will be turned into i=p->GetX(a, b),
   // and p->x[a][b] = i will be turned into p->PutX(a, b, i);
+  //
+  // Since C++23, MSVC accepts multiple arguments; e.g. given
+  //
+  //   struct S {
+  //     int get_x(int, int);
+  //     __declspec(property(get=get_x)) int x[][];
+  //   };
+  //
+  // MSVC accepts both 'S().x[1][2]' and 'S().x[1, 2]'.
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Sirraide wrote:

Alright, I'll do that then

https://github.com/llvm/llvm-project/pull/187828