[flang] [llvm] [flang] Implement FSEEK and FTELL (PR #133003)

[Eugene Epshteyn via llvm-commits]

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@@ -457,6 +457,19 @@ void ExternalFileUnit::SetPosition(std::int64_t pos, IoErrorHandler &handler) {
   BeginRecord();
 }
 
+void ExternalFileUnit::Sought(
+    std::int64_t zeroBasedPos, IoErrorHandler &handler) {
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eugeneepshteyn wrote:

What's the purpose of `handler` in this function?

https://github.com/llvm/llvm-project/pull/133003