tree-diff: allow diff_tree_sha1 to accept NULL sha1

diff --git a/log-tree.c b/log-tree.c
index 1982631ca497002b746873cd62fabbc4b7f9d3ce..08970bf46e49f6447ada24e81e5792ea9f92f419 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -98,7 +98,7 @@ static int add_ref_decoration(const char *refname, const unsigned char *sha1, in
        struct object *obj;
        enum decoration_type type = DECORATION_NONE;
 
-       if (!prefixcmp(refname, "refs/replace/")) {
+       if (starts_with(refname, "refs/replace/")) {
                unsigned char original_sha1[20];
                if (!read_replace_refs)
                        return 0;
@@ -116,11 +116,11 @@ static int add_ref_decoration(const char *refname, const unsigned char *sha1, in
        if (!obj)
                return 0;
 
-       if (!prefixcmp(refname, "refs/heads/"))
+       if (starts_with(refname, "refs/heads/"))
                type = DECORATION_REF_LOCAL;
-       else if (!prefixcmp(refname, "refs/remotes/"))
+       else if (starts_with(refname, "refs/remotes/"))
                type = DECORATION_REF_REMOTE;
-       else if (!prefixcmp(refname, "refs/tags/"))
+       else if (starts_with(refname, "refs/tags/"))
                type = DECORATION_REF_TAG;
        else if (!strcmp(refname, "refs/stash"))
                type = DECORATION_REF_STASH;
@@ -736,7 +736,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
        if (!opt->diff && !DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS))
                return 0;
 
-       parse_commit(commit);
+       parse_commit_or_die(commit);
        sha1 = commit->tree->object.sha1;
 
        /* Root commit? */
@@ -761,7 +761,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
                         * parent, showing summary diff of the others
                         * we merged _in_.
                         */
-                       parse_commit(parents->item);
+                       parse_commit_or_die(parents->item);
                        diff_tree_sha1(parents->item->tree->object.sha1,
                                       sha1, "", &opt->diffopt);
                        log_tree_diff_flush(opt);
@@ -776,7 +776,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
        for (;;) {
                struct commit *parent = parents->item;
 
-               parse_commit(parent);
+               parse_commit_or_die(parent);
                diff_tree_sha1(parent->tree->object.sha1,
                               sha1, "", &opt->diffopt);
                log_tree_diff_flush(opt);