[clang] Reland: [clang] Diagnose dangling issues for the "Container<GSLPointer>" case. #107213 (PR #108344)

[Haojian Wu via cfe-commits]

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@@ -357,35 +369,101 @@ static bool shouldTrackFirstArgument(const FunctionDecl *FD) {
   return false;
 }
 
+// Returns true if the given constructor is a copy-like constructor, such as
+// `Ctor(Owner<U>&&)` or `Ctor(const Owner<U>&)`.
+static bool isCopyLikeConstructor(const CXXConstructorDecl *Ctor) {
+  if (!Ctor || Ctor->param_size() != 1)
+    return false;
+  const auto *ParamRefType =
+      Ctor->getParamDecl(0)->getType()->getAs<ReferenceType>();
+  if (!ParamRefType)
+    return false;
+
+  // Check if the first parameter type "Owner<U>".
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hokein wrote:

Done.

https://github.com/llvm/llvm-project/pull/108344