[all-commits] [llvm/llvm-project] 202785: [flang][runtime] Clear leftTabLimit at in FinishRe...

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 202785708ed0ff11770f8ae8603514d2c9a54bd9
      https://github.com/llvm/llvm-project/commit/202785708ed0ff11770f8ae8603514d2c9a54bd9
  Author: Peter Klausler <35819229+klausler at users.noreply.github.com>
  Date:   2024-07-18 (Thu, 18 Jul 2024)

  Changed paths:
    M flang/runtime/unit.cpp

  Log Message:
  -----------
  [flang][runtime] Clear leftTabLimit at in FinishReadingRecord (#98822)

ExternalFileUnit::FinishReadingRecord() is called at the end of a READ
statement, unless the read is non-advancing and there was no error. In
the event of an erroneous non-advancing read, however,
FinishReadingRecord() leaves ConnectionState::leftTabLimit inhabited by
a value, leaving the impression that the *next* record is undergoing a
non-advancing operation, and this cause the next operation to fail. In
the test case in the reported bug, the next operation is a BACKSPACE,
and it ends up doing nothing. The fix is to always reset leftTabLimit in
FinishReadingRecord.

Fixes https://github.com/llvm/llvm-project/issues/98783.



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