[clang] [clang][AST] Assert that DependentNameType::Name is not null (PR #122418)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Nathan Ridge (HighCommander4)

<details>
<summary>Changes</summary>

Also clarify the comment above DependentNameType::getIdentifier()

---
Full diff: https://github.com/llvm/llvm-project/pull/122418.diff


1 Files Affected:

- (modified) clang/include/clang/AST/Type.h (+5-6) 


``````````diff
diff --git a/clang/include/clang/AST/Type.h b/clang/include/clang/AST/Type.h
index 09c98f642852fc..2ec59c2cb9a8f6 100644
--- a/clang/include/clang/AST/Type.h
+++ b/clang/include/clang/AST/Type.h
@@ -7035,17 +7035,16 @@ class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode {
       : TypeWithKeyword(Keyword, DependentName, CanonType,
                         TypeDependence::DependentInstantiation |
                             toTypeDependence(NNS->getDependence())),
-        NNS(NNS), Name(Name) {}
+        NNS(NNS), Name(Name) {
+    assert(Name);
+  }
 
 public:
   /// Retrieve the qualification on this type.
   NestedNameSpecifier *getQualifier() const { return NNS; }
 
-  /// Retrieve the type named by the typename specifier as an identifier.
-  ///
-  /// This routine will return a non-NULL identifier pointer when the
-  /// form of the original typename was terminated by an identifier,
-  /// e.g., "typename T::type".
+  /// Retrieve the identifier that terminates this type name.
+  /// For example, "type" in "typename T::type".
   const IdentifierInfo *getIdentifier() const {
     return Name;
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/122418