Hi

It seems ftruncate() is not available on Windows, and thus my new --retry code
make the Windows build fail.

Does anyone know what alternative function I can use on Windows?

--- snip ---
NAME
        truncate, ftruncate - truncate a file to a specified length

SYNOPSIS
        #include <unistd.h>
        #include <sys/types.h>

        int truncate(const char *path, off_t length);
        int ftruncate(int fd, off_t length);

DESCRIPTION
        The truncate and ftruncate functions cause the regular file named by
        path or referenced by fd to be truncated to a size of precisely length
        bytes.
--- snip ---

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