[clang] [clang-tools-extra] [Clang] Implement CWG2813: Class member access with prvalues (PR #120223)

[Erich Keane via cfe-commits]

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@@ -10659,6 +10659,11 @@ class Sema final : public SemaBase {
                            SourceLocation EndLoc);
   void ActOnForEachDeclStmt(DeclGroupPtrTy Decl);
 
+  /// DiagnoseDiscardedExprMarkedNodiscard - Given an expression that is
+  /// semantically a discarded-value expression, diagnose if any [[nodiscard]]
+  /// value has been discarded
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erichkeane wrote:

```suggestion
  /// value has been discarded.
```

https://github.com/llvm/llvm-project/pull/120223