[clang] [LifetimeSafety] Warn when lifetimebound attribute is present on the definition but not on declaration (PR #197753)

[Gábor Horváth via cfe-commits]

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@@ -415,6 +416,28 @@ class LifetimeChecker {
     }
   }
 
+  void reportMisplacedLifetimebound() {
+    const FunctionDecl *FDef = dyn_cast<FunctionDecl>(FD);
+    if (!FDef)
+      return;
+
+    const FunctionDecl *FDecl = FDef->getPreviousDecl();
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Xazax-hun wrote:

Sounds good to me. 

https://github.com/llvm/llvm-project/pull/197753