Merge branch 'master' into next

* master:
  packed_object_info_detail(): check for corrupt packfile.
  cleanups: remove unused variable from exec_cmd.c
  cleanups: prevent leak of two strduped strings in config.c
  cleanups: Remove impossible case in quote.c
  cleanups: Remove unused vars from combine-diff.c
  cleanups: Fix potential bugs in connect.c
  Allow empty lines in info/grafts

combine-diff.c

@@ -589,7 +589,7 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 			   struct diff_options *opt)
 {
 	unsigned long result_size, cnt, lno;
-	char *result, *cp, *ep;
+	char *result, *cp;
 	struct sline *sline; /* survived lines */
 	int mode_differs = 0;
 	int i, show_hunks, shown_header = 0;
@@ -641,7 +641,6 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 		cnt++; /* incomplete line */
 
 	sline = xcalloc(cnt+2, sizeof(*sline));
-	ep = result;
 	sline[0].bol = result;
 	for (lno = 0; lno <= cnt + 1; lno++) {
 		sline[lno].lost_tail = &sline[lno].lost_head;
@@ -752,7 +751,7 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 
 static void show_raw_diff(struct combine_diff_path *p, int num_parent, const char *header, struct diff_options *opt)
 {
-	int i, offset, mod_type = 'A';
+	int i, offset;
 	const char *prefix;
 	int line_termination, inter_name_termination;
 
@@ -764,13 +763,6 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, const cha
 	if (header)
 		printf("%s%c", header, line_termination);
 
-	for (i = 0; i < num_parent; i++) {
-		if (p->parent[i].mode)
-			mod_type = 'M';
-	}
-	if (!p->mode)
-		mod_type = 'D';
-
 	if (opt->output_format == DIFF_FORMAT_RAW) {
 		offset = strlen(COLONS) - num_parent;
 		if (offset < 0)

commit.c

@@ -160,7 +160,7 @@ struct commit_graft *read_graft_line(char *buf, int len)
 
 	if (buf[len-1] == '\n')
 		buf[--len] = 0;
-	if (buf[0] == '#')
+	if (buf[0] == '#' || buf[0] == '\0')
 		return NULL;
 	if ((len + 1) % 41) {
 	bad_graft_data:

config.c

@@ -420,6 +420,7 @@ int git_config_set_multivar(const char* key, const char* value,
 {
 	int i;
 	int fd, in_fd;
+	int ret;
 	char* config_filename = strdup(git_path("config"));
 	char* lock_file = strdup(git_path("config.lock"));
 	const char* last_dot = strrchr(key, '.');
@@ -429,9 +430,10 @@ int git_config_set_multivar(const char* key, const char* value,
 	 * key name separated by a dot, we have to know where the dot is.
 	 */
 
-	if (last_dot == NULL) {	
+	if (last_dot == NULL) {
 		fprintf(stderr, "key does not contain a section: %s\n", key);
-		return 2;
+		ret = 2;
+		goto out_free;
 	}
 	store.baselen = last_dot - key;
 
@@ -447,7 +449,8 @@ int git_config_set_multivar(const char* key, const char* value,
 				 (i == store.baselen+1 && !isalpha(key[i])))) {
 			fprintf(stderr, "invalid key: %s\n", key);
 			free(store.key);
-			return 1;
+			ret = 1;
+			goto out_free;
 		} else
 			store.key[i] = tolower(key[i]);
 	store.key[i] = 0;
@@ -460,7 +463,8 @@ int git_config_set_multivar(const char* key, const char* value,
 	if (fd < 0) {
 		fprintf(stderr, "could not lock config file\n");
 		free(store.key);
-		return -1;
+		ret = -1;
+		goto out_free;
 	}
 
 	/*
@@ -475,13 +479,15 @@ int git_config_set_multivar(const char* key, const char* value,
 			      strerror(errno));
 			close(fd);
 			unlink(lock_file);
-			return 3; /* same as "invalid config file" */
+			ret = 3; /* same as "invalid config file" */
+			goto out_free;
 		}
 		/* if nothing to unset, error out */
 		if (value == NULL) {
 			close(fd);
 			unlink(lock_file);
-			return 5;
+			ret = 5;
+			goto out_free;
 		}
 
 		store.key = (char*)key;
@@ -507,7 +513,8 @@ int git_config_set_multivar(const char* key, const char* value,
 				fprintf(stderr, "Invalid pattern: %s\n",
 					value_regex);
 				free(store.value_regex);
-				return 6;
+				ret = 6;
+				goto out_free;
 			}
 		}
 
@@ -528,7 +535,8 @@ int git_config_set_multivar(const char* key, const char* value,
 				regfree(store.value_regex);
 				free(store.value_regex);
 			}
-			return 3;
+			ret = 3;
+			goto out_free;
 		}
 
 		free(store.key);
@@ -542,7 +550,8 @@ int git_config_set_multivar(const char* key, const char* value,
 				(store.seen > 1 && multi_replace == 0)) {
 			close(fd);
 			unlink(lock_file);
-			return 5;
+			ret = 5;
+			goto out_free;
 		}
 
 		fstat(in_fd, &st);
@@ -593,10 +602,18 @@ int git_config_set_multivar(const char* key, const char* value,
 
 	if (rename(lock_file, config_filename) < 0) {
 		fprintf(stderr, "Could not rename the lock file?\n");
-		return 4;
+		ret = 4;
+		goto out_free;
 	}
 
-	return 0;
+	ret = 0;
+
+out_free:
+	if (config_filename)
+		free(config_filename);
+	if (lock_file)
+		free(lock_file);
+	return ret;
 }
 
 

connect.c

@@ -74,7 +74,7 @@ int get_ack(int fd, unsigned char *result_sha1)
 		line[--len] = 0;
 	if (!strcmp(line, "NAK"))
 		return 0;
-	if (!strncmp(line, "ACK ", 3)) {
+	if (!strncmp(line, "ACK ", 4)) {
 		if (!get_sha1_hex(line+4, result_sha1)) {
 			if (strstr(line+45, "continue"))
 				return 2;
@@ -567,6 +567,7 @@ int git_connect(int fd[2], char *url, const char *prog)
 	int pipefd[2][2];
 	pid_t pid;
 	enum protocol protocol = PROTO_LOCAL;
+	int free_path = 0;
 
 	host = strstr(url, "://");
 	if(host) {
@@ -610,16 +611,23 @@ int git_connect(int fd[2], char *url, const char *prog)
 		char *ptr = path;
 		if (path[1] == '~')
 			path++;
-		else
+		else {
 			path = strdup(ptr);
+			free_path = 1;
+		}
 
 		*ptr = '\0';
 	}
 
 	if (protocol == PROTO_GIT) {
+		int ret;
 		if (git_use_proxy(host))
-			return git_proxy_connect(fd, prog, host, path);
-		return git_tcp_connect(fd, prog, host, path);
+			ret = git_proxy_connect(fd, prog, host, path);
+		else
+			ret = git_tcp_connect(fd, prog, host, path);
+		if (free_path)
+			free(path);
+		return ret;
 	}
 
 	if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
@@ -659,6 +667,8 @@ int git_connect(int fd[2], char *url, const char *prog)
 	fd[1] = pipefd[1][1];
 	close(pipefd[0][1]);
 	close(pipefd[1][0]);
+	if (free_path)
+		free(path);
 	return pid;
 }
 

exec_cmd.c

@@ -32,7 +32,7 @@ const char *git_exec_path(void)
 int execv_git_cmd(const char **argv)
 {
 	char git_command[PATH_MAX + 1];
-	int len, err, i;
+	int len,  i;
 	const char *paths[] = { current_exec_path,
 				getenv("GIT_EXEC_PATH"),
 				builtin_exec_path };
@@ -85,8 +85,6 @@ int execv_git_cmd(const char **argv)
 		/* execve() can only ever return if it fails */
 		execve(git_command, (char **)argv, environ);
 
-		err = errno;
-
 		argv[0] = tmp;
 	}
 	return -1;

quote.c

@@ -144,8 +144,6 @@ static int quote_c_style_counted(const char *name, int namelen,
 
 			case '\\': /* fallthru */
 			case '"': EMITQ(); break;
-			case ' ':
-				break;
 			default:
 				/* octal */
 				EMITQ();

sha1_file.c

@@ -874,17 +874,19 @@ void packed_object_info_detail(struct pack_entry *e,
 			       unsigned char *base_sha1)
 {
 	struct packed_git *p = e->p;
-	unsigned long offset, left;
+	unsigned long offset;
 	unsigned char *pack;
 	enum object_type kind;
 
 	offset = unpack_object_header(p, e->offset, &kind, size);
 	pack = p->pack_base + offset;
-	left = p->pack_size - offset;
 	if (kind != OBJ_DELTA)
 		*delta_chain_length = 0;
 	else {
 		unsigned int chain_length = 0;
+		if (p->pack_size <= offset + 20)
+			die("pack file %s records an incomplete delta base",
+			    p->pack_name);
 		memcpy(base_sha1, pack, 20);
 		do {
 			struct pack_entry base_ent;