bug#7355: coreutils df on OSX reports wrong sizes for large filesystems

[Tim Spriggs]

Hello,

  I am running gentoo-prefix on OSX which builds coreutils. When I
compare the output of the system df to the standard GNU df I get:


$ /bin/df -h /data/hirise06
Filesystem               Size   Used  Avail Capacity  Mounted on
hiserve2:/vol/hirise06  7.9Ti  430Gi  7.5Ti     6%    /data/hirise06

$ df -h /data/hirise06
Filesystem            Size  Used Avail Use% Mounted on
hiserve2:/vol/hirise06
                      2.0T  431G -523G   -  /data/hirise06

The 2.0T size looks suspicious to me. Maybe an integer is overflowing somewhere?

I'll also note that this was reported some time ago to the macports
bug tracking software (https://trac.macports.org/ticket/16480) but
their resolution was requesting an upstream fix.

Thanks,
-Tim