[clang] [LifetimeSafety] Add details for `-Wlifetime-safety-return-stack-addr` diagnostic (PR #199432)

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github-actions[bot] wrote:

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<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- clang/include/clang/Analysis/Analyses/LifetimeSafety/LifetimeSafety.h clang/lib/Analysis/LifetimeSafety/Checker.cpp clang/lib/Sema/SemaLifetimeSafety.h clang/test/Sema/warn-lifetime-analysis-nocfg.cpp clang/test/Sema/warn-lifetime-safety-suggestions.cpp clang/test/Sema/warn-lifetime-safety.cpp --diff_from_common_commit
``````````

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The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaLifetimeSafety.h b/clang/lib/Sema/SemaLifetimeSafety.h
index 6bd78f79d..a65b88553 100644
--- a/clang/lib/Sema/SemaLifetimeSafety.h
+++ b/clang/lib/Sema/SemaLifetimeSafety.h
@@ -75,8 +75,7 @@ public:
   }
 
   void reportUseAfterReturn(const ValueDecl *VD, const Expr *IssueExpr,
-                            const Expr *ReturnExpr,
-                            const Expr *MovedExpr,
+                            const Expr *ReturnExpr, const Expr *MovedExpr,
                             bool IsReference) override {
     unsigned DiagID = MovedExpr
                           ? diag::warn_lifetime_safety_return_stack_addr_moved
@@ -93,8 +92,7 @@ public:
   }
 
   void reportUseAfterReturn(const MaterializeTemporaryExpr *MTE,
-                            const Expr *ReturnExpr,
-                            const Expr *MovedExpr,
+                            const Expr *ReturnExpr, const Expr *MovedExpr,
                             bool IsReference) override {
     unsigned DiagID =
         MovedExpr ? diag::warn_lifetime_safety_return_temp_stack_addr_moved

``````````

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https://github.com/llvm/llvm-project/pull/199432