[clang] [C] Warn on uninitialized const objects (PR #137166)

[Shafik Yaghmour via cfe-commits]

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@@ -6496,6 +6496,17 @@ static bool canPerformArrayCopy(const InitializedEntity &Entity) {
   return false;
 }
 
+static const FieldDecl *getConstField(const RecordDecl *RD) {
+  for (const FieldDecl *FD : RD->fields()) {
+    QualType QT = FD->getType();
+    if (QT.isConstQualified())
+      return FD;
+    if (const auto *RD = QT->getAsRecordDecl())
+      return getConstField(RD);
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shafik wrote:

Should we check the return value and if it is `nullptr` continue the outer for?

https://github.com/llvm/llvm-project/pull/137166