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bisect--helper: avoid use-after-free 

In 5e82c3dd22 (bisect--helper: `bisect_reset` shell function in C,
2019-01-02), the `git bisect reset` subcommand was ported to C. When the
call to `git checkout` failed, an error message was reported to the
user.

However, this error message used the `strbuf` that had just been
released already. Let's switch that around: first use it, then release
it.

Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Tanushree Tumane 2019-12-09 11:56:47 +01:00 committed by Junio C Hamano
parent 367f12b7e9
commit 51a0a4ed95
1 changed files with 4 additions and 3 deletions
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7
builtin/bisect--helper.c
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@ -169,11 +169,12 @@ static int bisect_reset(const char *commit)
argv_array_pushl(&argv, "checkout", branch.buf, "--", NULL);
if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
error(_("could not check out original"
" HEAD '%s'. Try 'git bisect"
" reset <commit>'."), branch.buf);
strbuf_release(&branch);
argv_array_clear(&argv);
return error(_("could not check out original"
" HEAD '%s'. Try 'git bisect"
" reset <commit>'."), branch.buf);
return -1;
}
argv_array_clear(&argv);
}