Hi all,
Below is an execution trace using "od":
<TRACE>
sh-2.05b$ od --version
od (GNU coreutils) 6.7
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
Written by Jim Meyering.
sh-2.05b$ echo "1234567890123456789" >toto
sh-2.05b$ ls -l toto
-rw-r----- 1 ghalebp gnbst200 20 2007-07-10 09:53 toto
sh-2.05b$ od -t x1 -Ad -v toto
0000000 31 32 33 34 35 36 37 38 39 30 31 32 33 34 35 36
0000016 37 38 39 0a
0000020
sh-2.05b$ od -t x1 -j 19 -Ad -v toto
0000019 0a
0000020
sh-2.05b$ od -t x1 -j 20 -Ad -v toto
0000020 31 32 33 34 35 36 37 38 39 30 31 32 33 34 35 36
0000036 37 38 39 0a
0000040
sh-2.05b$ od -t x1 -j 21 -Ad -v toto
od: cannot skip past end of combined input
</TRACE>
IOW, when one tries to skip exactly the size of the file, od acts as if
it ignored the "-j size" option.
I looked at the source code and found that the problem is most likely in
src/od.c:skip() at line 1043:
if ((uintmax_t) file_stats.st_size <= n_skip)
which should be:
if ((uintmax_t) file_stats.st_size < n_skip)
I did this change on a local build and tested it successfully. Am I the
first one to come across this problem?
Kind regards,
--Paul
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