[clang] Support `guarded_by` attribute and related attributes inside C structs and support late parsing them (PR #95455)

[Dan Liew via cfe-commits]

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@@ -29,6 +30,22 @@ struct LOCKABLE Mutex {};
 
 struct Foo {
   struct Mutex *mu_;
+  int  a_value GUARDED_BY(mu_);
+
+  struct Bar {
+    struct Mutex *other_mu ACQUIRED_AFTER(mu_);
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delcypher wrote:

@pdherbemont Did you add the comment? I can't find it in the diff shown on GitHub

https://github.com/llvm/llvm-project/pull/95455