[PATCH] D83809: [flang] Implement anonymous units in the runtime

[Peter Klausler via Phabricator via llvm-commits]

klausler created this revision.
klausler added reviewers: sscalpone, tskeith, PeteSteinfeld.
klausler added a project: Flang.
Herald added a reviewer: jdoerfert.
Herald added a reviewer: DavidTruby.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

I/O from/to an unopened unit number needs to open &/or create
a "fort.$UNIT" file.

Fixes FCVS test fm401.f.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83809

Files:
  flang/runtime/io-api.cpp
  flang/runtime/unit-map.h
  flang/runtime/unit.cpp
  flang/runtime/unit.h

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