This diff patches commit a0f49e63, which has been released os part of Tensorflow
Text 2.9. We can remove this patch once we update our dependency. This has not
been done yet due to a Protobuf incompatibility introduced by this update.

diff --git a/tensorflow_text/core/kernels/regex_split.cc b/tensorflow_text/core/kernels/regex_split.cc
index 473b922e..db422781 100644
--- a/tensorflow_text/core/kernels/regex_split.cc
+++ b/tensorflow_text/core/kernels/regex_split.cc
@@ -45,24 +45,24 @@ void RegexSplitImpl(absl::string_view input, const RE2& re2,
       tokens->push_back(token);
       // Mark the end of the last token
       begin_offsets->push_back(token.data() - input.data());
-      end_offsets->push_back(token.data() + token.length() - input.begin());
+      end_offsets->push_back(token.data() + token.length() - input.data());
     }

     if (should_include_delim) {
       // If desired, include the deliminator as a token.
       tokens->push_back(extracted_delim_token);
       // Mark the end of the token at the end of the beginning of the delimiter.
-      begin_offsets->push_back(extracted_delim_token.data() - input.begin());
+      begin_offsets->push_back(extracted_delim_token.data() - input.data());
       end_offsets->push_back(extracted_delim_token.data() +
-                             extracted_delim_token.length() - input.begin());
+                             extracted_delim_token.length() - input.data());
     }
   }

   // Close the last token.
   if (!leftover.empty()) {
     tokens->push_back(leftover);
-    begin_offsets->push_back(leftover.data() - input.begin());
-    end_offsets->push_back(leftover.data() + leftover.length() - input.begin());
+    begin_offsets->push_back(leftover.data() - input.data());
+    end_offsets->push_back(leftover.data() + leftover.length() - input.data());
   }
 }