[flang-commits] [PATCH] D127782: [flang][runtime] Allow recovery from BACKSPACE(badUnit)

[Peter Klausler via Phabricator via flang-commits]

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When an unconnected unit number is used in a BACKSPACE statement
with ERR=, IOSTAT=, &/or IOMSG= control specifiers, don't crash,
but let the program deal with the error.


https://reviews.llvm.org/D127782

Files:
  flang/include/flang/Runtime/iostat.h
  flang/runtime/io-api.cpp
  flang/runtime/io-stmt.cpp
  flang/runtime/io-stmt.h
  flang/runtime/iostat.cpp
  flang/runtime/unit.cpp
  flang/runtime/unit.h

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