1 files changed, 27 insertions, 14 deletions

diff --git a/builtin/log.c b/builtin/log.c
index a440601efe..5ffc380bd7 100644
--- 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)
@@ -483,16 +487,20 @@ static int show_blob_object(const struct object_id *oid, struct rev_info *rev, c
 	    !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV))
 		return stream_blob_to_fd(1, oid, NULL, 0);
 
-	if (get_sha1_with_context(obj_name, 0, oidc.hash, &obj_context))
+	if (get_sha1_with_context(obj_name, GET_SHA1_RECORD_PATH,
+				  oidc.hash, &obj_context))
 		die(_("Not a valid object name %s"), obj_name);
-	if (!obj_context.path[0] ||
-	    !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size))
+	if (!obj_context.path ||
+	    !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size)) {
+		free(obj_context.path);
 		return stream_blob_to_fd(1, oid, NULL, 0);
+	}
 
 	if (!buf)
 		die(_("git show %s: bad file"), obj_name);
 
 	write_or_die(1, buf, size);
+	free(obj_context.path);
 	return 0;
 }
 
@@ -842,8 +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, '/');
 	}
 
@@ -857,8 +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;
@@ -1043,9 +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);
 
@@ -1298,7 +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]))
@@ -1354,7 +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;