getcwd infinite recursion

[Colin Watson]

Hi,

I'm in the process of making my man-db package use Gnulib. Upon
importing the xgetcwd module and using it, I found that calling xgetcwd
caused infinite recursion:

  #34894 0x0805cc1e in getcwd (buf=0x0, size=0) at getcwd.c:157
  #34895 0x0805cc1e in getcwd (buf=0x0, size=0) at getcwd.c:157
  #34896 0x0805ca0b in xgetcwd () at xgetcwd.c:37
  #34897 0x08050a6a in main (argc=2, argv=0xbfe7bc04) at man.c:726

configure defines HAVE_PARTLY_WORKING_GETCWD on my system, namely Debian
unstable with glibc 2.6.1. I note that lib/getcwd.c says (much reduced
for brevity):

  #if !_LIBC
  # define __getcwd getcwd
  #endif
  
  char *
  __getcwd (char *buf, size_t size)
  {
  #if HAVE_PARTLY_WORKING_GETCWD
  # undef getcwd
    dir = getcwd (buf, size);
  #endif

Isn't this bound to break with HAVE_PARTLY_WORKING_GETCWD && !LIBC? The
function definition preprocesses to char *getcwd.

I'm working with the gnulib package in Debian unstable (last commit
dated 2007-09-18), but inspection of a current git checkout suggests
that it has the same problem.

Thanks,

-- 
Colin Watson                                       address@hidden