[clang] [C++20][Coroutines] Lambda-coroutine with operator new in promise_type (PR #84193)

[Chuanqi Xu via cfe-commits]

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@@ -6898,10 +6898,18 @@ class Sema final {
                                    BinaryOperatorKind Operator);
 
   //// ActOnCXXThis -  Parse 'this' pointer.
-  ExprResult ActOnCXXThis(SourceLocation loc);
+  ///
+  /// \param SkipLambdaCaptureCheck Whether to skip the 'this' check for a
+  /// lambda because 'this' is the lambda's 'this'-pointer.
+  ExprResult ActOnCXXThis(SourceLocation loc,
+                          bool SkipLambdaCaptureCheck = false);
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ChuanqiXu9 wrote:

Can we provide more rationale for skipping lambda's capture check here? For example, in what cases and for what reasons, we want to skip the check. I am still confused for that.

https://github.com/llvm/llvm-project/pull/84193