[clang] [Clang] Added clang diagnostic when snprintf/vsnprintf uses sizeof(de… (PR #170637)

[Oliver Hunt via cfe-commits]

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@@ -895,6 +895,10 @@ def warn_sizeof_pointer_type_memaccess : Warning<
   "argument to 'sizeof' in %0 call is the same pointer type %1 as the "
   "%select{destination|source}2; expected %3 or an explicit length">,
   InGroup<SizeofPointerMemaccess>;
+def warn_sizeof_pointer_dest_type_memacess : Warning<
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ojhunt wrote:

You should reuse warn_sizeof_pointer_type_memaccess and the associated note.

https://github.com/llvm/llvm-project/pull/170637