builtin/verify-tag.c: ignore SIGPIPE in gpg-interface
[gitweb.git] / bisect.c
index f9da9d134680c7581231f27584b10e83a6110bcd..7996c2907b0e571578f2ce18095c83c134a503b3 100644 (file)
--- a/bisect.c
+++ b/bisect.c
@@ -19,7 +19,6 @@ static struct object_id *current_bad_oid;
 
 static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
 static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
-static const char *argv_update_ref[] = {"update-ref", "--no-deref", "BISECT_HEAD", NULL, NULL};
 
 static const char *term_bad;
 static const char *term_good;
@@ -194,7 +193,7 @@ static int compare_commit_dist(const void *a_, const void *b_)
        b = (struct commit_dist *)b_;
        if (a->distance != b->distance)
                return b->distance - a->distance; /* desc sort */
-       return hashcmp(a->commit->object.sha1, b->commit->object.sha1);
+       return oidcmp(&a->commit->object.oid, &b->commit->object.oid);
 }
 
 static struct commit_list *best_bisection_sorted(struct commit_list *list, int nr)
@@ -441,7 +440,7 @@ static void read_bisect_paths(struct argv_array *array)
        if (!fp)
                die_errno("Could not open file '%s'", filename);
 
-       while (strbuf_getline(&str, fp, '\n') != EOF) {
+       while (strbuf_getline_lf(&str, fp) != EOF) {
                strbuf_trim(&str);
                if (sq_dequote_to_argv_array(str.buf, array))
                        die("Badly quoted content in file '%s': %s",
@@ -501,7 +500,7 @@ struct commit_list *filter_skipped(struct commit_list *list,
                struct commit_list *next = list->next;
                list->next = NULL;
                if (0 <= sha1_array_lookup(&skipped_revs,
-                                          list->item->object.sha1)) {
+                                          list->item->object.oid.hash)) {
                        if (skipped_first && !*skipped_first)
                                *skipped_first = 1;
                        /* Move current to tried list */
@@ -576,7 +575,7 @@ static struct commit_list *skip_away(struct commit_list *list, int count)
 
        for (i = 0; cur; cur = cur->next, i++) {
                if (i == index) {
-                       if (hashcmp(cur->item->object.sha1, current_bad_oid->hash))
+                       if (oidcmp(&cur->item->object.oid, current_bad_oid))
                                return cur;
                        if (previous)
                                return previous;
@@ -669,7 +668,7 @@ static int is_expected_rev(const struct object_id *oid)
        if (!fp)
                return 0;
 
-       if (strbuf_getline(&str, fp, '\n') != EOF)
+       if (strbuf_getline_lf(&str, fp) != EOF)
                res = !strcmp(str.buf, oid_to_hex(oid));
 
        strbuf_release(&str);
@@ -678,34 +677,16 @@ static int is_expected_rev(const struct object_id *oid)
        return res;
 }
 
-static void mark_expected_rev(char *bisect_rev_hex)
-{
-       int len = strlen(bisect_rev_hex);
-       const char *filename = git_path("BISECT_EXPECTED_REV");
-       int fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
-
-       if (fd < 0)
-               die_errno("could not create file '%s'", filename);
-
-       bisect_rev_hex[len] = '\n';
-       write_or_die(fd, bisect_rev_hex, len + 1);
-       bisect_rev_hex[len] = '\0';
-
-       if (close(fd) < 0)
-               die("closing file %s: %s", filename, strerror(errno));
-}
-
-static int bisect_checkout(char *bisect_rev_hex, int no_checkout)
+static int bisect_checkout(const unsigned char *bisect_rev, int no_checkout)
 {
+       char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
 
-       mark_expected_rev(bisect_rev_hex);
+       memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
+       update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
 
        argv_checkout[2] = bisect_rev_hex;
        if (no_checkout) {
-               argv_update_ref[3] = bisect_rev_hex;
-               if (run_command_v_opt(argv_update_ref, RUN_GIT_CMD))
-                       die("update-ref --no-deref HEAD failed on %s",
-                           bisect_rev_hex);
+               update_ref(NULL, "BISECT_HEAD", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
        } else {
                int res;
                res = run_command_v_opt(argv_checkout, RUN_GIT_CMD);
@@ -727,10 +708,10 @@ static struct commit *get_commit_reference(const unsigned char *sha1)
 
 static struct commit **get_bad_and_good_commits(int *rev_nr)
 {
-       int len = 1 + good_revs.nr;
-       struct commit **rev = xmalloc(len * sizeof(*rev));
+       struct commit **rev;
        int i, n = 0;
 
+       ALLOC_ARRAY(rev, 1 + good_revs.nr);
        rev[n++] = get_commit_reference(current_bad_oid->hash);
        for (i = 0; i < good_revs.nr; i++)
                rev[n++] = get_commit_reference(good_revs.sha1[i]);
@@ -749,6 +730,11 @@ static void handle_bad_merge_base(void)
                                "This means the bug has been fixed "
                                "between %s and [%s].\n",
                                bad_hex, bad_hex, good_hex);
+               } else if (!strcmp(term_bad, "new") && !strcmp(term_good, "old")) {
+                       fprintf(stderr, "The merge base %s is new.\n"
+                               "The property has changed "
+                               "between %s and [%s].\n",
+                               bad_hex, bad_hex, good_hex);
                } else {
                        fprintf(stderr, "The merge base %s is %s.\n"
                                "This means the first '%s' commit is "
@@ -781,11 +767,11 @@ static void handle_skipped_merge_base(const unsigned char *mb)
 }
 
 /*
- * "check_merge_bases" checks that merge bases are not "bad".
+ * "check_merge_bases" checks that merge bases are not "bad" (or "new").
  *
- * - If one is "bad", it means the user assumed something wrong
+ * - If one is "bad" (or "new"), it means the user assumed something wrong
  * and we must exit with a non 0 error code.
- * - If one is "good", that's good, we have nothing to do.
+ * - If one is "good" (or "old"), that's good, we have nothing to do.
  * - If one is "skipped", we can't know but we should warn.
  * - If we don't know, we should check it out and ask the user to test.
  */
@@ -798,7 +784,7 @@ static void check_merge_bases(int no_checkout)
        result = get_merge_bases_many(rev[0], rev_nr - 1, rev + 1);
 
        for (; result; result = result->next) {
-               const unsigned char *mb = result->item->object.sha1;
+               const unsigned char *mb = result->item->object.oid.hash;
                if (!hashcmp(mb, current_bad_oid->hash)) {
                        handle_bad_merge_base();
                } else if (0 <= sha1_array_lookup(&good_revs, mb)) {
@@ -807,7 +793,7 @@ static void check_merge_bases(int no_checkout)
                        handle_skipped_merge_base(mb);
                } else {
                        printf("Bisecting: a merge base must be tested\n");
-                       exit(bisect_checkout(sha1_to_hex(mb), no_checkout));
+                       exit(bisect_checkout(mb, no_checkout));
                }
        }
 
@@ -928,9 +914,9 @@ void read_bisect_terms(const char **read_bad, const char **read_good)
                                strerror(errno));
                }
        } else {
-               strbuf_getline(&str, fp, '\n');
+               strbuf_getline_lf(&str, fp);
                *read_bad = strbuf_detach(&str, NULL);
-               strbuf_getline(&str, fp, '\n');
+               strbuf_getline_lf(&str, fp);
                *read_good = strbuf_detach(&str, NULL);
        }
        strbuf_release(&str);
@@ -951,7 +937,6 @@ int bisect_next_all(const char *prefix, int no_checkout)
        struct commit_list *tried;
        int reaches = 0, all = 0, nr, steps;
        const unsigned char *bisect_rev;
-       char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
 
        read_bisect_terms(&term_bad, &term_good);
        if (read_bisect_refs())
@@ -988,12 +973,11 @@ int bisect_next_all(const char *prefix, int no_checkout)
                exit(4);
        }
 
-       bisect_rev = revs.commits->item->object.sha1;
-       memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
+       bisect_rev = revs.commits->item->object.oid.hash;
 
        if (!hashcmp(bisect_rev, current_bad_oid->hash)) {
                exit_if_skipped_commits(tried, current_bad_oid);
-               printf("%s is the first %s commit\n", bisect_rev_hex,
+               printf("%s is the first %s commit\n", sha1_to_hex(bisect_rev),
                        term_bad);
                show_diff_tree(prefix, revs.commits->item);
                /* This means the bisection process succeeded. */
@@ -1006,7 +990,7 @@ int bisect_next_all(const char *prefix, int no_checkout)
               "(roughly %d step%s)\n", nr, (nr == 1 ? "" : "s"),
               steps, (steps == 1 ? "" : "s"));
 
-       return bisect_checkout(bisect_rev_hex, no_checkout);
+       return bisect_checkout(bisect_rev, no_checkout);
 }
 
 static inline int log2i(int n)