[all-commits] [llvm/llvm-project] bcd055: [flang][msvc] Define access flags under Windows. NFC.

[Michael Kruse via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: bcd05599d0e53977a963799d6ee4f6e0bc21331b
      https://github.com/llvm/llvm-project/commit/bcd05599d0e53977a963799d6ee4f6e0bc21331b
  Author: Michael Kruse <llvm-project at meinersbur.de>
  Date:   2020-09-29 (Tue, 29 Sep 2020)

  Changed paths:
    M flang/runtime/file.cpp

  Log Message:
  -----------
  [flang][msvc] Define access flags under Windows. NFC.

The flags F_OK, R_OK and W_OK are defined in unistd.h, which does not exist under the Windows platform. Windows still defines the `access` function. Its access flags are documented at https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/access-waccess. For compatibility, define the flags F_OK, R_OK and W_OK using these constants.

This patch is part of the series to make flang compilable with MS Visual Studio <http://lists.llvm.org/pipermail/flang-dev/2020-July/000448.html>.

Reviewed By: klausler

Differential Revision: https://reviews.llvm.org/D88508