[llvm] [NativePDB] Fix crash in llvm-pdbutil (PR #164871)

[via llvm-commits]

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@@ -194,6 +194,8 @@ Error LazyRandomTypeCollection::visitRangeForType(TypeIndex TI) {
   }
 
   visitRange(TIB, Prev->Offset, TIE);
+  if (Records.size() <= TI.toArrayIndex())
+    return make_error<CodeViewError>("Type index too big");
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Nerixyz wrote:

I see, thank you for the explanation. 

A comment explaining why the check is done there (similar to the comment you linked) would be great.

https://github.com/llvm/llvm-project/pull/164871