After submit of JDK-6501010 we see the test/java/io/File/GetXSpace.java failing on our Windows test machines. The issue seems to be that the 'df' call produces several lines of output on this machines. The group 1 of the matcher misses the first character in all lines except for the first one.

In a short test I changed the regex to match $ instead of \n in the end and added the MULTILINE flag.

Pattern.compile("([^\\s]+)\\s+(\\d+)\\s+\\d+\\s+(\\d+)\\s+\\d+%\\s+([^\\s].*)$", Pattern.MULTILINE);

This let the test pass in our infrastructure.


Output of a failing test:
----------System.out:(24/869)----------
--- Testing df
C:/cygwin64 998257472 664791328 333466144 67% /
K: 262144000 129993392 132150608 50% /cygdrive/k
O: 734003200 641218112 92785088 88% /cygdrive/o


SecurityManager = null
C:/cygwin64:
  df total= 1022215651328 free = 0 usable = 341469331456
  getX total= 1022215651328 free = 341469323264 usable = 341469323264
::
  df total= 268435456000 free = 0 usable = 135322222592
  getX total= 0 free = 0 usable = 0
FAILED

The drives K: and O: are mapped network drives.