RE: stat() on Windows might cause error if target file is larger than 4GB

Michael-san,

From: Michael Paquier [mailto:michael(at)paquier(dot)xyz]
>Does something like the patch attached help?
>This makes sure that st_size is set correctly for files with a size larger than 4GB.

Thank you for creating patch, but this does not solve current problem.
Of cause setting wrong size to st_size is problem,
I think the cause of this problem is stat()'s return value (=-1).

In pgwin32_safestat(), if stat() try to deal with files with a size larger than 4GB,
the return value is -1. So, pgwin32_safestat() exits before calculating buf->st_size.

----
pgwin32_safestat(const char *path, struct stat *buf)
{
int r;
WIN32_FILE_ATTRIBUTE_DATA attr;

r = stat(path, buf);
if (r < 0)
{
...
return r;
}
...
buf->st_size = attr.nFileSizeLow;

return 0;
}
----

So, attached patch help me and strange message disappeared,
but I ignore the impact of this for others now.

Regards,
Daisuke, Higuchi