[clang] [Clang] Implement P2718R0 "Lifetime extension in range-based for loops" (PR #76361)

[Aaron Ballman via cfe-commits]

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@@ -2539,6 +2539,12 @@ StmtResult Sema::ActOnCXXForRangeStmt(Scope *S, SourceLocation ForLoc,
     return StmtError();
   }
 
+  if (getLangOpts().CPlusPlus23) {
+    auto Entity = InitializedEntity::InitializeVariable(RangeVar);
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AaronBallman wrote:

Ah `InitializedEntity` doesn't have a copy constructor so the move operation will be cheap. Thanks!

https://github.com/llvm/llvm-project/pull/76361