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[ADT] Simplify enable_if_struct_deref_supported (NFC) #159939

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Merged
kazutakahirata merged 1 commit into from
Sep 21, 2025
Merged

[ADT] Simplify enable_if_struct_deref_supported (NFC) #159939

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7 changes: 3 additions & 4 deletions llvm/include/llvm/ADT/fallible_iterator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -67,10 +67,9 @@ namespace llvm {
/// without requiring redundant error checks.
template <typename Underlying> class fallible_iterator {
private:
template <typename T>
using enable_if_struct_deref_supported = std::enable_if_t<
!std::is_void<decltype(std::declval<T>().operator->())>::value,
decltype(std::declval<T>().operator->())>;
template <typename T, typename U = decltype(std::declval<T>().operator->())>
using enable_if_struct_deref_supported =
std::enable_if_t<!std::is_void_v<U>, U>;

public:
/// Construct a fallible iterator that *cannot* be used as an end-of-range
Expand Down