[clang-tools-extra] [clang-tidy] Unsafe CRTP check (PR #82403)

[via cfe-commits]

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+.. title:: clang-tidy - bugprone-unsafe-crtp
+
+bugprone-unsafe-crtp
+====================
+
+Finds CRTP used in an error-prone way.
+
+If the constructor of a class intended to be used in a CRTP is public, then
+it allows users to construct that class on its own.
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whisperity wrote:

Just by reading the documentation, this single sentence seems incomplete. It does not look like it could convince someone without intricate C++ knowledge about why allowing such thing is bad. No need for something elaborate here, but perhaps another sentence that summarises the _"Why?"_ should fit here.

https://github.com/llvm/llvm-project/pull/82403