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-rw-r--r--absl/container/flat_hash_set.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/absl/container/flat_hash_set.h b/absl/container/flat_hash_set.h
index 4938c703..7bb1fa90 100644
--- a/absl/container/flat_hash_set.h
+++ b/absl/container/flat_hash_set.h
@@ -220,9 +220,11 @@ class flat_hash_set
// NOTE: returning `void` in this case is different than that of STL
// containers in general and `std::unordered_set` in particular (which
// return an iterator to the element following the erased element). If that
- // iterator is needed, simply post increment the iterator:
+ // iterator is needed, copy the iterator before erasing:
//
- // set.erase(it++);
+ // // `erase()` will invalidate `it`, so advance `it` first.
+ // auto copy_it = it++;
+ // set.erase(copy_it);
//
// iterator erase(const_iterator first, const_iterator last):
//