LWG4239 flat_map's transparent comparator no longer works for string literals

Author: burblebee

source/containers.tex

@@ -17940,7 +17940,7 @@
 \tcode{*this} and \tcode{args...} are unchanged.
 Otherwise equivalent to:
 \begin{codeblock}
-auto key_it = ranges::upper_bound(@\exposid{c}@.keys, k, @\exposid{compare}@);
+auto key_it = upper_bound(@\exposid{c}@.keys.begin(), @\exposid{c}@.keys.end(), k, @\exposid{compare}@);
 auto value_it = @\exposid{c}@.values.begin() + distance(@\exposid{c}@.keys.begin(), key_it);
 @\exposid{c}@.keys.emplace(key_it, std::forward<K>(k));
 @\exposid{c}@.values.emplace(value_it, std::forward<Args>(args)...);