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

[via cfe-commits]

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@@ -10967,16 +10967,27 @@ def warn_lifetime_safety_use_after_free : Warning<
     "%select{allocated object|parameter}0 does not live long enough">,
     InGroup<LifetimeSafetyUseAfterFree>, DefaultIgnore;
 
-def warn_lifetime_safety_return_stack_addr
-    : Warning<"address of stack memory is returned later">,
-      InGroup<LifetimeSafetyReturnStackAddr>,
-      DefaultIgnore;
-def warn_lifetime_safety_return_stack_addr_moved
-    : Warning<"address of stack memory may be returned later. "
-      "This could be false positive as the storage may have been moved. "
-      "Consider moving first and then aliasing later to resolve the issue">,
-      InGroup<LifetimeSafetyReturnStackAddrMoved>,
-      DefaultIgnore;
+def warn_lifetime_safety_return_stack_addr : Warning<
+  "%select{address of|reference to}0 stack memory associated with "
+  "%select{local variable|parameter}2 %1 returned">,
+  InGroup<LifetimeSafetyReturnStackAddr>, DefaultIgnore;
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NeKon69 wrote:

This sounds much better to me, let's go with that!

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