diff options
| -rw-r--r-- | apps/gui/line.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/apps/gui/line.c b/apps/gui/line.c index fe017970e6..fd35102ab0 100644 --- a/apps/gui/line.c +++ b/apps/gui/line.c @@ -51,9 +51,17 @@ static void put_text(struct screen *display, int x, int y, struct line_desc *lin const char *text, bool prevent_scroll, int text_skip_pixels); struct line_desc_scroll { - struct line_desc desc; /* must be first! */ + struct line_desc desc; bool used; -} lines[MAX_LINES]; +}; + +/* Allocate MAX_LINES+1 because at the time get_line_desc() is called + * the scroll engine did not yet determine that it ran out of lines + * (because puts_scroll_func() wasn't called yet. Therefore we can + * run out of lines before setting the used field. By allocating + * one item more we can survive that point and set used to false + * if the scroll engine runs out of lines */ +static struct line_desc_scroll lines[MAX_LINES+1]; static struct line_desc_scroll *get_line_desc(void) { |