mailmap: always store allocated strings in mailmap blob

Same as with the preceding commit, the `git_mailmap_blob` may sometimes
contain an allocated string and sometimes it may contain a string
constant. This is risky and can easily lead to bugs in case the variable
is getting re-assigned, where the code may then try to free the previous
value to avoid memory leaks.

Safeguard the code by always storing allocated strings in the variable.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-06-07 08:39:12 +02:00 committed by Junio C Hamano
parent 844d190677
commit c77756015e

View file

@ -216,7 +216,7 @@ int read_mailmap(struct string_list *map)
map->cmp = namemap_cmp;
if (!git_mailmap_blob && is_bare_repository())
git_mailmap_blob = "HEAD:.mailmap";
git_mailmap_blob = xstrdup("HEAD:.mailmap");
if (!startup_info->have_repository || !is_bare_repository())
err |= read_mailmap_file(map, ".mailmap",