[clang] [compiler-rt] [libcxx] [llvm] [clang] Warn about memset/memcpy to NonTriviallyCopyable types (PR #111434)

[Aaron Ballman via cfe-commits]

================
@@ -8899,18 +8899,42 @@ void Sema::CheckMemaccessArguments(const CallExpr *Call,
           << ArgIdx << FnName << PointeeTy
           << Call->getCallee()->getSourceRange());
     else if (const auto *RT = PointeeTy->getAs<RecordType>()) {
+
+      auto IsTriviallyCopyableCXXRecord = [](auto const *RT) {
----------------
AaronBallman wrote:

Actually, @erichkeane just reminded me that we have 
`QualType::isTriviallyCopyableType()` -- that's an even better interface to use 
IMO.

https://github.com/llvm/llvm-project/pull/111434
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