sim

commit 0c56b3f56aa0efb732673ef492eb476053d82239
parent 2649fa79c1e66cd825a952501df9acb8af66ca25
Author: ssnf <ssnf@ssnf.xyz>
Date:   Thu, 11 Aug 2022 13:04:21 +0000

fixed integer overflow on blind_write()

Diffstat:
M
sim.c
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sim.c b/sim.c
@@ -224,7 +224,8 @@ blind_writer(String* s, Frame* fr, ushort line, ushort offset, ushort top, ushor
 		o = offset + bot - 1;
 	else if (fr->n)
 		o = fr->n - 1;
-	printf(CSI "%uH", line - offset);
+	line = offset > line ? 0 : line - offset;
+	printf(CSI "%uH", line);
 	fwrite(&s->s[fr->a[i].p0], fr->a[o].p1 - fr->a[i].p0, 1, stdout);
 }