[clang-tools-extra] Add bugprone-sprintf-overlap (PR #114244)

[via cfe-commits]

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@@ -0,0 +1,23 @@
+.. title:: clang-tidy - bugprone-undefined-sprintf-overlap
+
+bugprone-undefined-sprintf-overlap
+==================================
+
+Warns if any arguments to the sprintf family of functions overlap with the
+first argument.
+
+.. code-block:: c++
+
+    char buf[20] = {"hi"};
+    sprintf(buf, "%s%d", buf, 0);
+
+C99 and POSIX.1-2001 states that if copying were to take place between objects
+that overlap, the result is undefined.
+
+Options
+-------
+
+.. option:: SprintfRegex
+
+   A regex specifying the sprintf family of functions to match on. By default,
+   this is "(::std)?::sn?printf".
----------------
EugeneZelenko wrote:

```suggestion
   this is `(::std)?::sn?printf`.
```

https://github.com/llvm/llvm-project/pull/114244