From: Jacob Keller <jacob.kel...@gmail.com>

Since we're going to be changing this function in a future patch, lets
go ahead and convert this to use object_id now.

Signed-off-by: Jacob Keller <jacob.kel...@gmail.com>
---
 diff.c      |  2 +-
 submodule.c | 16 ++++++++--------
 submodule.h |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/diff.c b/diff.c
index d6b321da3d1d..16253b191f53 100644
--- a/diff.c
+++ b/diff.c
@@ -2307,7 +2307,7 @@ static void builtin_diff(const char *name_a,
                const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
                show_submodule_summary(o->file, one->path ? one->path : 
two->path,
                                line_prefix,
-                               one->oid.hash, two->oid.hash,
+                               &one->oid, &two->oid,
                                two->dirty_submodule,
                                meta, del, add, reset);
                return;
diff --git a/submodule.c b/submodule.c
index e1a51b7506ff..422353ccf6cc 100644
--- a/submodule.c
+++ b/submodule.c
@@ -335,7 +335,7 @@ static void print_submodule_summary(struct rev_info *rev, 
FILE *f,
 
 void show_submodule_summary(FILE *f, const char *path,
                const char *line_prefix,
-               unsigned char one[20], unsigned char two[20],
+               struct object_id *one, struct object_id *two,
                unsigned dirty_submodule, const char *meta,
                const char *del, const char *add, const char *reset)
 {
@@ -345,14 +345,14 @@ void show_submodule_summary(FILE *f, const char *path,
        struct strbuf sb = STRBUF_INIT;
        int fast_forward = 0, fast_backward = 0;
 
-       if (is_null_sha1(two))
+       if (is_null_oid(two))
                message = "(submodule deleted)";
        else if (add_submodule_odb(path))
                message = "(not initialized)";
-       else if (is_null_sha1(one))
+       else if (is_null_oid(one))
                message = "(new submodule)";
-       else if (!(left = lookup_commit_reference(one)) ||
-                !(right = lookup_commit_reference(two)))
+       else if (!(left = lookup_commit_reference(one->hash)) ||
+                !(right = lookup_commit_reference(two->hash)))
                message = "(commits not present)";
        else if (prepare_submodule_summary(&rev, path, left, right,
                                           &fast_forward, &fast_backward))
@@ -365,16 +365,16 @@ void show_submodule_summary(FILE *f, const char *path,
                fprintf(f, "%sSubmodule %s contains modified content\n",
                        line_prefix, path);
 
-       if (!hashcmp(one, two)) {
+       if (!oidcmp(one, two)) {
                strbuf_release(&sb);
                return;
        }
 
        strbuf_addf(&sb, "%s%sSubmodule %s %s..", line_prefix, meta, path,
-                       find_unique_abbrev(one, DEFAULT_ABBREV));
+                       find_unique_abbrev(one->hash, DEFAULT_ABBREV));
        if (!fast_backward && !fast_forward)
                strbuf_addch(&sb, '.');
-       strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV));
+       strbuf_addf(&sb, "%s", find_unique_abbrev(two->hash, DEFAULT_ABBREV));
        if (message)
                strbuf_addf(&sb, " %s%s\n", message, reset);
        else
diff --git a/submodule.h b/submodule.h
index 2af939099819..d83df57e24ff 100644
--- a/submodule.h
+++ b/submodule.h
@@ -43,7 +43,7 @@ const char *submodule_strategy_to_string(const struct 
submodule_update_strategy
 void handle_ignore_submodules_arg(struct diff_options *diffopt, const char *);
 void show_submodule_summary(FILE *f, const char *path,
                const char *line_prefix,
-               unsigned char one[20], unsigned char two[20],
+               struct object_id *one, struct object_id *two,
                unsigned dirty_submodule, const char *meta,
                const char *del, const char *add, const char *reset);
 void set_config_fetch_recurse_submodules(int value);
-- 
2.10.0.rc0.217.g609f9e8.dirty

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