X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fpolytmpl.h;h=12df420c66295c1ec22768087cd52d1be309cead;hp=db5997a2774f64180bb74c8966dedd533fb467bf;hb=1723e332319e7732473814dfc168a13d0bafccb4;hpb=1bd8af3c3c9ec41903590d6ad24ff6313a5cc19b

diff --git a/src/polytmpl.h b/src/polytmpl.h
index db5997a..12df420 100644
--- a/src/polytmpl.h
+++ b/src/polytmpl.h
@@ -93,8 +93,9 @@ void POLYFILL(struct pvertex *pv, int nverts)
 		if(pv[i].y > pv[botidx].y) botidx = i;
 	}
 
-	left = alloca(pfill_fb.height * sizeof *left);
-	right = alloca(pfill_fb.height * sizeof *right);
+	/* +1 to avoid crashing due to off-by-one rounding errors in the rasterization */
+	left = alloca((pfill_fb.height + 1) * sizeof *left);
+	right = alloca((pfill_fb.height + 1) * sizeof *right);
 
 	for(i=0; i<nverts; i++) {
 		int next = NEXTIDX(i);