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Diffstat (limited to 'vcs-svn/sliding_window.c')
-rw-r--r--vcs-svn/sliding_window.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/vcs-svn/sliding_window.c b/vcs-svn/sliding_window.c
index 1b8d987..1bac7a4 100644
--- a/vcs-svn/sliding_window.c
+++ b/vcs-svn/sliding_window.c
@@ -54,6 +54,8 @@ int move_window(struct sliding_view *view, off_t off, size_t width)
return -1;
if (off < view->off || off + width < view->off + view->width)
return error("invalid delta: window slides left");
+ if (view->max_off >= 0 && view->max_off < off + width)
+ return error("delta preimage ends early");
file_offset = view->off + view->buf.len;
if (off < file_offset) {