================
@@ -2261,43 +2261,68 @@ template <typename... Refs> struct
enumerator_result<std::size_t, Refs...> {
mutable range_reference_tuple Storage;
};
-/// Infinite stream of increasing 0-based `size_t` indices.
-struct index_stream {
- struct iterator : iterator_facade_base<iterator, std::forward_iterator_tag,
- const iterator> {
- iterator &operator++() {
- assert(Index != std::numeric_limits<std::size_t>::max() &&
- "Attempting to increment end iterator");
- ++Index;
- return *this;
- }
+struct index_iterator
+ : llvm::iterator_facade_base<index_iterator,
+ std::random_access_iterator_tag, std::size_t,
+ std::ptrdiff_t> {
----------------
benlangmuir wrote:
ptrdiff_t is the default
https://github.com/llvm/llvm-project/pull/66966
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