[clang] [Clang] Ensure "=default"ed function can be deleted when used as an extension in C++03 (PR #90725)

[via cfe-commits]

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@@ -9767,7 +9767,9 @@ bool Sema::ShouldDeleteSpecialMember(CXXMethodDecl *MD,
     return false;
   CXXRecordDecl *RD = MD->getParent();
   assert(!RD->isDependentType() && "do deletion after instantiation");
-  if (!LangOpts.CPlusPlus || (!LangOpts.CPlusPlus11 && !RD->isLambda()) ||
+  if (!LangOpts.CPlusPlus ||
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cor3ntin wrote:

are there cases where `!LangOpts.CPlusPlus` is true here?

https://github.com/llvm/llvm-project/pull/90725