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-rw-r--r--Build/source/texk/dvipdfm-x/dpxutil.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Build/source/texk/dvipdfm-x/dpxutil.c b/Build/source/texk/dvipdfm-x/dpxutil.c
index 4bcf28ad699..379fb515058 100644
--- a/Build/source/texk/dvipdfm-x/dpxutil.c
+++ b/Build/source/texk/dvipdfm-x/dpxutil.c
@@ -370,6 +370,8 @@ dpx_stack_roll (dpx_stack *stack, int n, int j)
if (n == 1)
return;
j = j % n;
+ if (j < 0)
+ j = n + j;
while (j-- > 0) {
int m = n;
stack_elem *elem, *prev, *top;