Merged revisions 81663 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81663 | lars.gustaebel | 2010-06-03 11:56:22 +0200 (Thu, 03 Jun 2010) | 4 lines

  Issue #8833: tarfile created hard link entries with a size
  field != 0 by mistake. The associated testcase did not
  expose this bug because it was broken too.
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diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index e9480c8..8559e96 100644
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1920,7 +1920,7 @@
         tarinfo.mode = stmd
         tarinfo.uid = statres.st_uid
         tarinfo.gid = statres.st_gid
-        if stat.S_ISREG(stmd):
+        if type == REGTYPE:
             tarinfo.size = statres.st_size
         else:
             tarinfo.size = 0