[clang] Add warning for blocks capturing {'this', raw pointers, references} (PR #144388)

[John McCall via cfe-commits]

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@@ -16149,7 +16149,7 @@ class ExitFunctionBodyRAII {
   bool IsLambda = false;
 };
 
-static void diagnoseImplicitlyRetainedSelf(Sema &S) {
+static void diagnoseBlockCaptures(Sema &S) {
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rjmccall wrote:

Maybe `diagnoseEscapingBlockCaptures`?

https://github.com/llvm/llvm-project/pull/144388