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-rw-r--r--js/src/jsarray.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/js/src/jsarray.cpp b/js/src/jsarray.cpp
index 9abc99e34..7af7c9800 100644
--- a/js/src/jsarray.cpp
+++ b/js/src/jsarray.cpp
@@ -2120,7 +2120,7 @@ js::ArrayShiftMoveElements(NativeObject* obj)
* decremented and the result fetched, so just shift the array elements
* themselves.
*/
- obj->moveDenseElementsNoPreBarrier(0, 1, initlen - 1);
+ obj->moveDenseElementsNoPreBarrier(0, 1, initlen);
}
static inline void