[PATCH] D144834: [ADT] Fix const-correctness issues in `zippy`

[Jakub Kuderski via Phabricator via llvm-commits]

kuhar added inline comments.


================
Comment at: llvm/unittests/ADT/IteratorTest.cpp:501-502
+  unsigned iters = 0;
+  for (auto [a, b, c] : zip_equal(SmallVector<int>{1, 2, 3}, std::string("abc"),
+                                  std::vector<bool>{true, false, true})) {
+    a = 3;
----------------
dblaikie wrote:
> Does this code work? How? Wouldn't the lifetimes of the temporary ranges expire before the body of the loop runs?
These ranges get moved into the `tuple<...> storage;` inside `zippy`. From then on, we can use references obtained from this `storage` to access them. So this should not rely on any lifetime extensions on the temporaries passed to `zip_equal`.


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  https://reviews.llvm.org/D144834/new/

https://reviews.llvm.org/D144834