[clang] [clang] AST Visitor: skip empty qualifiers in QualifiedTemplateName (PR #93926)

[Matheus Izvekov via cfe-commits]

================
@@ -855,10 +855,14 @@ bool 
RecursiveASTVisitor<Derived>::TraverseDeclarationNameInfo(
 
 template <typename Derived>
 bool RecursiveASTVisitor<Derived>::TraverseTemplateName(TemplateName Template) 
{
-  if (DependentTemplateName *DTN = Template.getAsDependentTemplateName())
+  if (DependentTemplateName *DTN = Template.getAsDependentTemplateName()) {
     TRY_TO(TraverseNestedNameSpecifier(DTN->getQualifier()));
-  else if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName())
-    TRY_TO(TraverseNestedNameSpecifier(QTN->getQualifier()));
+  } else if (QualifiedTemplateName *QTN =
+                 Template.getAsQualifiedTemplateName()) {
+    if (QTN->getQualifier()) {
+      TRY_TO(TraverseNestedNameSpecifier(QTN->getQualifier()));
+    }
+  }
----------------
mizvekov wrote:

I am going to merge since this fixes broken build bot.

Let's continue in post.

https://github.com/llvm/llvm-project/pull/93926
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