Ignore truncation in lcd-scroll.c
Change-Id: Id1008300e58cf12ab920c1023354a74a6d32daae
diff --git a/firmware/drivers/lcd-scroll.c b/firmware/drivers/lcd-scroll.c
index 0e17303..dd6a6fe 100644
--- a/firmware/drivers/lcd-scroll.c
+++ b/firmware/drivers/lcd-scroll.c
@@ -140,6 +140,7 @@
* Returns true if the text scrolled to the end */
bool LCDFN(scroll_now)(struct scrollinfo *s)
{
+ int len;
int width = LCDFN(getstringsize)(s->linebuffer, NULL, NULL);
bool ended = false;
/* assume s->scroll_func() don't yield; otherwise this buffer might need
@@ -164,8 +165,12 @@
}
else
{
- snprintf(line_buf, sizeof(line_buf)-1, "%s%s%s",
- s->linebuffer, " ", s->linebuffer);
+ len = snprintf(line_buf, sizeof(line_buf)-1, "%s%s%s",
+ s->linebuffer, " ", s->linebuffer);
+
+ if ((unsigned) len > sizeof(line_buf))
+ do { } while (0); /* ignore truncation */
+
s->line = line_buf;
width += LCDFN(getstringsize)(" ", NULL, NULL);
/* scroll forward the whole time */