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free ref string returned by dwim_ref

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A call to "dwim_ref(name, len, flags, &ref)" will allocate a
new string in "ref" to return the exact ref we found. We do
not consistently free it in all code paths, leading to small
leaks. The worst is in get_sha1_basic, which may be called
many times (e.g., by "cat-file --batch"), though it is
relatively unlikely, as it only triggers on a bogus reflog
specification.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2014-07-24 00:41:11 -04:00 committed by Junio C Hamano
parent d51428bf17
commit 28b3563241
3 changed files with 5 additions and 1 deletions
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1
builtin/rev-parse.c
View file

@ -150,6 +150,7 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
error("refname '%s' is ambiguous", name);
break;
}
free(full);
} else {
show_with_type(type, name);
}

1
builtin/show-branch.c
View file

@ -779,6 +779,7 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
sprintf(nth_desc, "%s@{%d}", *av, base+i);
append_ref(nth_desc, sha1, 1);
}
free(ref);
}
else if (all_heads + all_remotes)
snarf_refs(all_heads, all_remotes);

4
sha1_name.c
View file

@ -540,8 +540,10 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
char *tmp = xstrndup(str + at + 2, reflog_len);
at_time = approxidate_careful(tmp, &errors);
free(tmp);
if (errors)
if (errors) {
free(real_ref);
return -1;
}
}
if (read_ref_at(real_ref, at_time, nth, sha1, NULL,
&co_time, &co_tz, &co_cnt)) {