This function calls do_diff_cache() which eventually needs to set this
"istate" to unpack_options->src_index [1]. This is an unfortunate fact
that unpack_trees() _will_ update [2] src_index so we can't really pass a
const index_state there. Just remove 'const'.
[1] Right now diff_cache() in diff-lib.c assigns the_index to
src_index. But the plan is to get rid of the_index, so it should
be 'istate' from here that gets assigned to src_index.
[2] Some transient bits in the source index are touched. Optional
extensions can also be removed. But other than that the source
tree should still be valid.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
cache.h | 2 +-
read-cache.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/cache.h b/cache.h
index 4d014541ab..260e4ee44a 100644
--- a/cache.h
+++ b/cache.h
@@ -703,7 +703,7 @@ extern int unmerged_index(const struct index_state *);
* provided, the space-separated list of files that differ will be appended
* to it.
*/
-extern int index_has_changes(const struct index_state *istate,
+extern int index_has_changes(struct index_state *istate,
struct tree *tree,
struct strbuf *sb);
diff --git a/read-cache.c b/read-cache.c
index 7b1354d759..86134e56a6 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -2122,7 +2122,7 @@ int unmerged_index(const struct index_state *istate)
return 0;
}
-int index_has_changes(const struct index_state *istate,
+int index_has_changes(struct index_state *istate,
struct tree *tree,
struct strbuf *sb)
{
--
2.19.0.640.gcd3aa10a8a
