Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/docs/clang-tidy/checks/readability-deleted-default.rst

@@ -0,0 +1,22 @@
+.. title:: clang-tidy - readability-deleted-default
+
+readability-deleted-default
+===========================
+
+Checks that constructors and assignment operators marked as ``= default`` are
+not actually deleted by the compiler.
+
+.. code-block:: c++
+
+  class Example {
+  public:
+    // This constructor is deleted because I is missing a default value.
+    Example() = default;
+    // This is fine.
+    Example(const Example& Other) = default;
+    // This operator is deleted because I cannot be assigned (it is const).
+    Example& operator=(const Example& Other) = default;
+
+  private:
+    const int I;
+  };