Re: git-svn failure when symlink added in svn

Junio C Hamano [off-list ref] writes:

Is it really the redirection that is the problem?

The process seeks $fh back to the beginning, reads 5 bytes from
it (to ensure that is 'link '), and then forks to feed $fh to
git-hash-object.

Now what do you really want to hash here?  I do not know what
this "file that begins with 'link '" magic is about, but I
suspect that the child may or may not start reading from byte
offset 5 of that file, depending on how the low-level I/O is
tied to Perl.

Here is a little test script to imitate what the part in
close_file sub is doing.  What does it output on MacOS (or
whatever systems that are having the same problem)?

On a Linux box, it appears that it reads the remainder of the
file and the test script says "child says: >>12345", so I am
assuming that is what close_file sub wants to do.  If my
suspicion is correct, you would get "child says: >>link 12345",
in which case sysseek() commented out below would help,
perhaps.

On OS X, I get:

    ziti:~/temp seth$ ./perltest1.pl 
    read[5]: link 
    child says: child: at 5

And uncommenting the sysseek call, I get:

    ziti:~/temp seth$ ./perltest1.pl 
    read[5]: link 
    child says: child: at 5
    child says: >>12345

+ seth