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

[Carlos Galvez via cfe-commits]

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@@ -670,6 +670,8 @@ namespace MemcpyEtc {
   constexpr bool test_address_of_incomplete_struct_type() { // expected-error {{never produces a constant}}
     struct Incomplete;
     extern Incomplete x, y;
+    // expected-warning at +2 {{destination for call to '__builtin_memcpy' is a pointer to non-trivially copyable type 'Incomplete'}}
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carlosgalvezp wrote:

"destination for call" sounds a bit strange to me when reading. I'd write "destination argument/parameter for call" 

But we are splitting hairs at this point, if everyone else are happy with the current message I'm ok.

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