================
@@ -71,12 +73,17 @@ inline std::pair<unsigned, unsigned> getDepthAndIndex(const
NamedDecl *ND) {
}
/// Retrieve the depth and index of an unexpanded parameter pack.
-inline std::pair<unsigned, unsigned>
+/// Returns nullopt when the unexpanded packs do not correspond to template
+/// parameters, e.g. __builtin_dedup_types.
+inline std::optional<std::pair<unsigned, unsigned>>
getDepthAndIndex(UnexpandedParameterPack UPP) {
if (const auto *TTP = dyn_cast<const TemplateTypeParmType *>(UPP.first))
return std::make_pair(TTP->getDepth(), TTP->getIndex());
-
- return getDepthAndIndex(cast<NamedDecl *>(UPP.first));
+ if (isa<NamedDecl *>(UPP.first))
+ return getDepthAndIndex(cast<NamedDecl *>(UPP.first));
+ assert(isa<const TemplateSpecializationType *>(UPP.first) ||
----------------
erichkeane wrote:
```suggestion
assert(isa<const TemplateSpecializationType *, const
SubstBuiltinTemplatePackType *>(UPP.first));
```
Pretty sure this works?
https://github.com/llvm/llvm-project/pull/106730
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