From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Date: Sat, 6 May 2006 22:02:53 +0000 (+0200)
Subject: Fix users of prefix_path() to free() only when necessary
X-Git-Tag: v1.4.0-rc1~164
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/be65e7d9fbd3ae6fc097cedade2afe39805fcf4e?ds=inline;hp=be65e7d9fbd3ae6fc097cedade2afe39805fcf4e

Fix users of prefix_path() to free() only when necessary

Unfortunately, prefix_path() sometimes returns a newly xmalloc()ed buffer,
and in other cases it returns a substring!

For example, when calling

git update-index ./hello.txt

prefix_path() returns "hello.txt", but does not allocate a new buffer. The
original code only checked if the result of prefix_path() was different from
what was passed in, and thusly trigger a segmentation fault.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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