From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 27 Jan 2016 06:50:27 +0000 (-0800)
Subject: git: protect against unbalanced calls to {save,restore}_env()
X-Git-Tag: v2.8.0-rc0~52^2~2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/2e1175d43d05e83fe836e1c8c8e7c25b7ee659ae?ds=inline;hp=2e1175d43d05e83fe836e1c8c8e7c25b7ee659ae

git: protect against unbalanced calls to {save,restore}_env()

We made sure that save_env_before_alias() does not skip saving the
environment when asked to (which led to use-after-free of orig_cwd
in restore_env() in the buggy version) with the previous step.

Protect against future breakage where somebody adds new callers of
these functions in an unbalanced fashion.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
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