[llvm-bugs] [Bug 45619] New: openNativeFile ignores mode on Windows

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45619

            Bug ID: 45619
           Summary: openNativeFile ignores mode on Windows
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: ctetreau at quicinc.com
                CC: llvm-bugs at lists.llvm.org

On windows, the mode parameter to openNativeFile is not used. Instead, the
implementation of openNativeFile calls the win32 function CreateFileW to create
the file. It passes CreateFileW a SECURITY_ATTRIBUTES object with its
lpSecurityDescriptor field set to nullptr. This results in a file with the
default permissions.

The symptom of all of this on my machine is that clang-format -i changes the
source permissions to have the executable bit set.

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