[Issue 21289] [The D Bug Tracker] "File does not exist" FileException on c:\hiberfil.sys

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #1 from Vital <vital.fadeev at gmail.com> ---
I look into the std.file... function "existsImpl()"...

...
    version (Windows)
    {
        // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/
        // fileio/base/getfileattributes.asp
        return GetFileAttributesW(namez) != 0xFFFFFFFF; //
INVALID_FILE_ATTRIBUTES
    }
...

existsImpl() functions return "false" on file "c:\\hiberfil.sys".
Because INVALID_FILE_ATTRIBUTES.
It not correct? because file exists.

I tried several ways: GetFileAttributesW(), GetFileAttributesExW(),
FindFirstFileW().


Working solution :

    WIN32_FIND_DATAW fd;
    auto hFind = FindFirstFile ( "c:\\hiberfil.sys", &fd );

    if ( hFind != INVALID_HANDLE_VALUE )
    {
        writeln( "[ OK ]" );
        FindClose( hFind );
    }

Of course solution above is a little slower than GetFileAttributes(), but work
correct with .sys files.

I will suggest using "FindFirstFileW()" in the "std.file: existsImpl()"  there
is no better solution yet.

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