fsck: handle NULL return of lookup_blob() and lookup_tree()

diff --git a/builtin/log.c b/builtin/log.c
index 57ce470f5094c238ea4d5390f358b5cdd9499a56..5ffc380bd71f0ab8b5bec06f864e9cdcffda1e2f 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -5,6 +5,7 @@
  *              2006 Junio Hamano
  */
 #include "cache.h"
+#include "config.h"
 #include "refs.h"
 #include "color.h"
 #include "commit.h"
@@ -371,11 +372,14 @@ static int cmd_log_walk(struct rev_info *rev)
                         */
                        rev->max_count++;
                if (!rev->reflog_info) {
-                       /* we allow cycles in reflog ancestry */
+                       /*
+                        * We may show a given commit multiple times when
+                        * walking the reflogs.
+                        */
                        free_commit_buffer(commit);
+                       free_commit_list(commit->parents);
+                       commit->parents = NULL;
                }
-               free_commit_list(commit->parents);
-               commit->parents = NULL;
                if (saved_nrl < rev->diffopt.needed_rename_limit)
                        saved_nrl = rev->diffopt.needed_rename_limit;
                if (rev->diffopt.degraded_cc_to_c)
@@ -600,7 +604,7 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                        rev.shown_one = 1;
                        if (ret)
                                break;
-                       o = parse_object(t->tagged->oid.hash);
+                       o = parse_object(&t->tagged->oid);
                        if (!o)
                                ret = error(_("Could not read object %s"),
                                            oid_to_hex(&t->tagged->oid));
@@ -846,8 +850,10 @@ static int open_next_file(struct commit *commit, const char *subject,
        if (output_directory) {
                strbuf_addstr(&filename, output_directory);
                if (filename.len >=
-                   PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len)
+                   PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len) {
+                       strbuf_release(&filename);
                        return error(_("name of output directory is too long"));
+               }
                strbuf_complete(&filename, '/');
        }
 
@@ -861,8 +867,11 @@ static int open_next_file(struct commit *commit, const char *subject,
        if (!quiet)
                printf("%s\n", filename.buf + outdir_offset);
 
-       if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL)
-               return error(_("Cannot open patch file %s"), filename.buf);
+       if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) {
+               error_errno(_("Cannot open patch file %s"), filename.buf);
+               strbuf_release(&filename);
+               return -1;
+       }
 
        strbuf_release(&filename);
        return 0;
@@ -882,8 +891,8 @@ static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
        o2 = rev->pending.objects[1].item;
        flags1 = o1->flags;
        flags2 = o2->flags;
-       c1 = lookup_commit_reference(o1->oid.hash);
-       c2 = lookup_commit_reference(o2->oid.hash);
+       c1 = lookup_commit_reference(&o1->oid);
+       c2 = lookup_commit_reference(&o2->oid);
 
        if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
                die(_("Not a range."));
@@ -914,8 +923,8 @@ static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
 static void gen_message_id(struct rev_info *info, char *base)
 {
        struct strbuf buf = STRBUF_INIT;
-       strbuf_addf(&buf, "%s.%lu.git.%s", base,
-                   (unsigned long) time(NULL),
+       strbuf_addf(&buf, "%s.%"PRItime".git.%s", base,
+                   (timestamp_t) time(NULL),
                    git_committer_info(IDENT_NO_NAME|IDENT_NO_DATE|IDENT_STRICT));
        info->message_id = strbuf_detach(&buf, NULL);
 }
@@ -1047,9 +1056,9 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 
        diff_setup_done(&opts);
 
-       diff_tree_sha1(origin->tree->object.oid.hash,
-                      head->tree->object.oid.hash,
-                      "", &opts);
+       diff_tree_oid(&origin->tree->object.oid,
+                     &head->tree->object.oid,
+                     "", &opts);
        diffcore_std(&opts);
        diff_flush(&opts);
 
@@ -1267,7 +1276,7 @@ static struct commit *get_base_commit(const char *base_commit,
 
                        if (get_oid(upstream, &oid))
                                die(_("Failed to resolve '%s' as a valid ref."), upstream);
-                       commit = lookup_commit_or_die(oid.hash, "upstream base");
+                       commit = lookup_commit_or_die(&oid, "upstream base");
                        base_list = get_merge_bases_many(commit, total, list);
                        /* There should be one and only one merge base. */
                        if (!base_list || base_list->next)
@@ -1302,7 +1311,7 @@ static struct commit *get_base_commit(const char *base_commit,
 
                if (rev_nr % 2)
                        rev[i] = rev[2 * i];
-               rev_nr = (rev_nr + 1) / 2;
+               rev_nr = DIV_ROUND_UP(rev_nr, 2);
        }
 
        if (!in_merge_bases(base, rev[0]))
@@ -1358,7 +1367,7 @@ static void prepare_bases(struct base_tree_info *bases,
                struct object_id *patch_id;
                if (commit->util)
                        continue;
-               if (commit_patch_id(commit, &diffopt, oid.hash, 0))
+               if (commit_patch_id(commit, &diffopt, &oid, 0))
                        die(_("cannot get patch id"));
                ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
                patch_id = bases->patch_id + bases->nr_patch_id;
@@ -1823,7 +1832,7 @@ static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
 {
        struct object_id oid;
        if (get_oid(arg, &oid) == 0) {
-               struct commit *commit = lookup_commit_reference(oid.hash);
+               struct commit *commit = lookup_commit_reference(&oid);
                if (commit) {
                        commit->object.flags |= flags;
                        add_pending_object(revs, &commit->object, arg);