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-rw-r--r--pack-write.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/pack-write.c b/pack-write.c
index 741efcd93b..9f47cf9961 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -17,8 +17,8 @@ static int sha1_compare(const void *_a, const void *_b)
* the SHA1 hash of sorted object names. The objects array passed in
* will be sorted by SHA1 on exit.
*/
-char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
- int nr_objects, unsigned char *sha1)
+const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects,
+ int nr_objects, unsigned char *sha1)
{
struct sha1file *f;
struct pack_idx_entry **sorted_by_sha, **list, **last;