fixed crash when opening 0-numbered message.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@20 ee746299-78ed-0310-b773-934348b2243d

4 files changed, 14 insertions, 12 deletions

diff --git a/src/messageview.c b/src/messageview.c
index 4691d52f..707da43d 100644
--- a/src/messageview.c
+++ b/src/messageview.c
@@ -427,6 +427,8 @@ gint messageview_show(MessageView *messageview, MsgInfo *msginfo,
 	if (messageview->msginfo != msginfo) {
 		procmsg_msginfo_free(messageview->msginfo);
 		messageview->msginfo = procmsg_msginfo_get_full_info(msginfo);
+		if (!messageview->msginfo)
+			messageview->msginfo = procmsg_msginfo_copy(msginfo);
 	}
 	headerview_show(messageview->headerview, messageview->msginfo);
 
diff --git a/src/mh.c b/src/mh.c
index 7c7e5bd3..60ada344 100644
--- a/src/mh.c
+++ b/src/mh.c
@@ -715,7 +715,7 @@ static gint mh_scan_folder_full(Folder *folder, FolderItem *item,
 		folder->ui_func(folder, item, folder->ui_func_data);
 
 	while ((d = readdir(dp)) != NULL) {
-		if ((num = to_number(d->d_name)) >= 0 &&
+		if ((num = to_number(d->d_name)) > 0 &&
 		    dirent_is_regular_file(d)) {
 			n_msg++;
 			if (max < num)
@@ -974,7 +974,7 @@ static GSList *mh_get_uncached_msgs(GHashTable *msg_table, FolderItem *item)
 
 	if (msg_table) {
 		while ((d = readdir(dp)) != NULL) {
-			if ((num = to_number(d->d_name)) < 0) continue;
+			if ((num = to_number(d->d_name)) <= 0) continue;
 
 			msginfo = g_hash_table_lookup
 				(msg_table, GUINT_TO_POINTER(num));
@@ -997,7 +997,7 @@ static GSList *mh_get_uncached_msgs(GHashTable *msg_table, FolderItem *item)
 	} else {
 		/* discard all previous cache */
 		while ((d = readdir(dp)) != NULL) {
-			if (to_number(d->d_name) < 0) continue;
+			if (to_number(d->d_name) <= 0) continue;
 
 			msginfo = mh_parse_msg(d->d_name, item);
 			if (!msginfo) continue;
@@ -1227,7 +1227,7 @@ static void mh_scan_tree_recursive(FolderItem *item)
 			}
 
 			mh_scan_tree_recursive(new_item);
-		} else if (to_number(d->d_name) != -1) n_msg++;
+		} else if (to_number(d->d_name) > 0) n_msg++;
 
 		g_free(entry);
 		g_free(utf8entry);
diff --git a/src/procmsg.c b/src/procmsg.c
index 0328d47a..9b8bcb1f 100644
--- a/src/procmsg.c
+++ b/src/procmsg.c
@@ -262,8 +262,8 @@ GSList *procmsg_read_cache(FolderItem *item, gboolean scan_file)
 
 		/* if the message file doesn't exist or is changed,
 		   don't add the data */
-		if (type == F_MH && scan_file &&
-		    folder_item_is_msg_changed(item, msginfo))
+		if ((type == F_MH && scan_file &&
+		     folder_item_is_msg_changed(item, msginfo)) || num == 0)
 			procmsg_msginfo_free(msginfo);
 		else {
 			msginfo->folder = item;
diff --git a/src/utils.c b/src/utils.c
index 42b294e1..16602697 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1950,7 +1950,7 @@ gint remove_numbered_files(const gchar *dir, guint first, guint last)
 	DIR *dp;
 	struct dirent *d;
 	gchar *prev_dir;
-	gint fileno;
+	gint file_no;
 
 	prev_dir = g_get_current_dir();
 
@@ -1967,8 +1967,8 @@ gint remove_numbered_files(const gchar *dir, guint first, guint last)
 	}
 
 	while ((d = readdir(dp)) != NULL) {
-		fileno = to_number(d->d_name);
-		if (fileno >= 0 && first <= fileno && fileno <= last) {
+		file_no = to_number(d->d_name);
+		if (file_no > 0 && first <= file_no && file_no <= last) {
 			if (is_dir_exist(d->d_name))
 				continue;
 			if (unlink(d->d_name) < 0)
@@ -2000,7 +2000,7 @@ gint remove_expired_files(const gchar *dir, guint hours)
 	struct dirent *d;
 	struct stat s;
 	gchar *prev_dir;
-	gint fileno;
+	gint file_no;
 	time_t mtime, now, expire_time;
 
 	prev_dir = g_get_current_dir();
@@ -2021,8 +2021,8 @@ gint remove_expired_files(const gchar *dir, guint hours)
 	expire_time = hours * 60 * 60;
 
 	while ((d = readdir(dp)) != NULL) {
-		fileno = to_number(d->d_name);
-		if (fileno >= 0) {
+		file_no = to_number(d->d_name);
+		if (file_no > 0) {
 			if (stat(d->d_name, &s) < 0) {
 				FILE_OP_ERROR(d->d_name, "stat");
 				continue;