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GNU printf, and many others, will print the string "(null)" if a NULL pointer is passed as the argument to a "%s" format specifier. Some implementations (like on Solaris) do not detect a NULL pointer and will produce a segfault in this case. So, fix this by ensuring that pointer variables do not contain the value NULL. Assign the string "(null)" to the variables are NULL. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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