fixed gtkut_text_buffer_insert_with_tag_by_name().

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3462 ee746299-78ed-0310-b773-934348b2243d

2 files changed, 6 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 6c4cdb3a..85b6cf44 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2015-01-16
 
+	* src/gtkutils.c: gtkut_text_buffer_insert_with_tag_by_name():
+	  guard against the case of len == 0 (#215).
+
+2015-01-16
+
 	* src/mainwindow.c: main_window_window_state_cb():
 	  win32: fixed a bug that maximized state was unset on minimize.
 
diff --git a/src/gtkutils.c b/src/gtkutils.c
index 8240acc3..8258094d 100644
--- a/src/gtkutils.c
+++ b/src/gtkutils.c
@@ -965,7 +965,7 @@ void gtkut_text_buffer_insert_with_tag_by_name(GtkTextBuffer *buffer,
 	gtk_text_buffer_insert_with_tags_by_name
 		(buffer, iter, text, len, tag, NULL);
 
-	if (text[len - 1] != '\n') {
+	if (len > 0 && text[len - 1] != '\n') {
 		/* somehow returns invalid value first (bug?),
 		   so call it twice */
 		gtk_text_iter_get_chars_in_line(iter);