[clang] [clang][constexpr] Fix assertion failure in C++26 constexpr structured binding pack evaluation (#170991) (PR #213534)

[via cfe-commits]

================
@@ -1711,6 +1715,7 @@ void Sema::CheckCompleteDecompositionDeclaration(DecompositionDecl *DD) {
   //   E or of the same unambiguous public base class of E, ...
   if (checkMemberDecomposition(*this, Bindings, DD, DecompType, RD))
     DD->setInvalidDecl();
+  CleanupVarDeclMarking();
 }
 
----------------
babadany2999 wrote:

Hmmm... I'm not sure if this is what you meant. It only calls CleanupVarDeclMarking but it does change the code quite a bit.

https://github.com/llvm/llvm-project/pull/213534