[flang-commits] [PATCH] D101929: [flang] Runtime must defer formatted/unformatted determination

[Peter Klausler via Phabricator via flang-commits]

klausler created this revision.
klausler added a reviewer: jeanPerier.
klausler added a project: Flang.
Herald added a subscriber: jdoerfert.
klausler requested review of this revision.

What the Fortran standard calls "preconnected" external I/O units
might not be known to be connected to unformatted or formatted files
until the first I/O data transfer statement is executed.
Support this deferred determination by representing the flag as
a tri-state Boolean and adapting its points of use.


https://reviews.llvm.org/D101929

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

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