[clang] [Clang][CWG1815] Support lifetime extension of temporary created by aggregate initialization using a default member initializer (PR #87933)

[via cfe-commits]

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@@ -122,7 +122,7 @@ void aggregateWithReferences() {
   clang_analyzer_dump(viaReference.ry); // expected-warning-re {{&lifetime_extended_object{Composite, viaReference, S{{[0-9]+}}} }}
 
   // clang does not currently implement extending lifetime of object bound to reference members of aggregates,
-  // that are created from default member initializer (see `warn_unsupported_lifetime_extension` from `-Wdangling`)
+  // that are created from default member initializer (see `warn_unsupported_lifetime_extension` from `-Wdangling`) (Supported now).
   RefAggregate defaultInitExtended{i}; // clang-bug does not extend `Composite`
   clang_analyzer_dump(defaultInitExtended.ry); // expected-warning {{Unknown }}
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yronglin wrote:

Please give me some time to investigate, I'm not very familiar with analyzer.

https://github.com/llvm/llvm-project/pull/87933