diff mbox series

[v4,21/27] mailmap: always store allocated strings in mailmap blob

Message ID ef43c1b18f1f2d891ac1677c7dc1406b80e2add0.1717504517.git.ps@pks.im (mailing list archive)
State Superseded
Headers show
Series Compile with `-Wwrite-strings` | expand

Commit Message

Patrick Steinhardt June 4, 2024, 12:38 p.m. UTC 
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>
---
 mailmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mailmap.c b/mailmap.c
index b2efe29b3d..3d1e092fef 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -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",