diff options
| -rw-r--r-- | riscos/plotters.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/riscos/plotters.c b/riscos/plotters.c index e25c5ddcc..e258d047c 100644 --- a/riscos/plotters.c +++ b/riscos/plotters.c @@ -243,6 +243,12 @@ bool ro_plot_clip(int clip_x0, int clip_y0, clip_x1 = ro_plot_origin_x + clip_x1 * 2 - 1;
clip_y1 = ro_plot_origin_y - clip_y1 * 2;
+ if (clip_x1 < clip_x0 || clip_y0 < clip_y1) {
+ LOG(("bad clip rectangle %i %i %i %i",
+ clip_x0, clip_y0, clip_x1, clip_y1));
+ return false;
+ }
+
error = xos_set_graphics_window();
if (error) {
LOG(("xos_set_graphics_window: 0x%x: %s", error->errnum,
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