[clang] [Clang][Sema] Handle invalid variable template specialization whose type depends on itself (PR #134522)

[Yanzuo Liu via cfe-commits]

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@@ -7594,6 +7594,54 @@ ASTContext::getCanonicalTemplateArgument(const TemplateArgument &Arg) const {
   llvm_unreachable("Unhandled template argument kind");
 }
 
+bool ASTContext::isSameTemplateArgument(const TemplateArgument &Arg1,
+                                        const TemplateArgument &Arg2) const {
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zwuis wrote:

Oops. I didn't know that `isSameTemplateArg` in SemaTemplateDeduction.cpp was changed and I need to rebase. Thanks for your reminder.

https://github.com/llvm/llvm-project/pull/134522