Fix bug in xd3_set_source, the optimization for shiftby/maskby were

in some cases not setting those variables, which are used by xd3_blksize_div

1 files changed, 5 insertions, 0 deletions

diff --git a/xdelta3/xdelta3.c b/xdelta3/xdelta3.c
index 48c0013..0f8cf8d 100644
--- a/xdelta3/xdelta3.c
+++ b/xdelta3/xdelta3.c
@@ -2561,6 +2561,11 @@ xd3_set_source (xd3_stream *stream,
       src->shiftby = shiftby;
       src->maskby = (1 << shiftby) - 1;
     }
+  else
+    {
+      src->shiftby = 0;
+      src->maskby = 0;
+    }
 
   xd3_blksize_div (src->size, src, &blk_num, &tail_size);
   src->blocks  = blk_num + (tail_size > 0);