[clang] [Clang][CWG1815] Support lifetime extension of temporary created by aggregate initialization using a default member initializer (PR #92527)

[via cfe-commits]

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@@ -14102,6 +14102,13 @@ TreeTransform<Derived>::TransformCXXTemporaryObjectExpr(
     if (TransformExprs(E->getArgs(), E->getNumArgs(), true, Args,
                        &ArgumentChanged))
       return ExprError();
+
+    if (E->isListInitialization() && !E->isStdInitListInitialization()) {
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yronglin wrote:

If it is list initialization, but the constructor is called, and it is not the case of std::initializer_list, we should recreate an InitListExpr. https://godbolt.org/z/K4rzxosx3

https://github.com/llvm/llvm-project/pull/92527