[Bug 817187] Re: change in readlink() errno in 2.6.39 and later kernels causes FTBFS for packages with older gnulib

[Andy Whitcroft]

This is a notty one.  The behavour has indeed changed, ENOENT was the
previous return and now we return EINVAL.  I do not have a POSIX manual
to hand, but the gist of the restriction is as below:

   Empty pathname
       In the original Unix,  the  empty  pathname  referred  to  the  current
       directory.   Nowadays  POSIX decrees that an empty pathname must not be
       resolved successfully.  Linux returns ENOENT in this case.

It could be argued that the new behaviour is just as valid.  A change is
however unhelpful.  Especially as kernel behaviour is exposed in
chroots.

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Title:
  change in readlink() errno in 2.6.39 and later kernels causes FTBFS
  for packages with older gnulib

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