[clang] [clang] Diagnose dangling references for parenthesized aggregate initialization. (PR #117690)

[Utkarsh Saxena via cfe-commits]

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@@ -961,6 +963,17 @@ static void visitLocalsRetainedByInitializer(IndirectLocalPath &Path,
   if (isa<CallExpr>(Init) || isa<CXXConstructExpr>(Init))
     return visitFunctionCallArguments(Path, Init, Visit);
 
+  if (auto *CPE = dyn_cast<CXXParenListInitExpr>(Init)) {
+    Path.push_back({IndirectLocalPathEntry::ParenAggInit, CPE});
+    for (auto *I : CPE->getInitExprs()) {
+      if (I->isGLValue())
+        visitLocalsRetainedByReferenceBinding(Path, I, RK_ReferenceBinding,
+                                              Visit);
+      else
+        visitLocalsRetainedByInitializer(Path, I, Visit, true);
+    }
+    Path.pop_back();
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usx95 wrote:

nit: Use `RevertToOldSizeRAII`.

https://github.com/llvm/llvm-project/pull/117690