[clang] [C11] Implement WG14 N1285 (temporary lifetimes) (PR #133472)

[Eli Friedman via cfe-commits]

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@@ -741,10 +741,11 @@ ExprResult Sema::ImpCastExprToType(Expr *E, QualType Ty,
   if (Kind == CK_ArrayToPointerDecay) {
     // C++1z [conv.array]: The temporary materialization conversion is applied.
     // We also use this to fuel C++ DR1213, which applies to C++11 onwards.
-    if (getLangOpts().CPlusPlus && E->isPRValue()) {
+    if ((getLangOpts().C11 || getLangOpts().CPlusPlus) && E->isPRValue()) {
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efriedma-quic wrote:

Does this change actually do anything?  I can't come up with any way to produce a prvalue array in C.

https://github.com/llvm/llvm-project/pull/133472