fix potential out-of-bounds write

2025-07-24 22:59:58 -06:00 · 2019-07-13 02:54:14 +02:00
parent ff27036b35
commit 22f3cae067
2 changed files with 4 additions and 1 deletions
--- a/src/GPU2D.cpp
+++ b/src/GPU2D.cpp
@ -753,8 +753,10 @@ void GPU2D::DrawScanline(u32 line)

    case 1: // regular display
        {
-            for (int i = 0; i < stride; i+=2)
+            int i = 0;
+            for (; i < (stride & ~1); i+=2)
                *(u64*)&dst[i] = *(u64*)&BGOBJLine[i];
+            if (stride & 1) dst[i] = BGOBJLine[i];
        }
        break;