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-rw-r--r--lib/pure/collections/deques.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/pure/collections/deques.nim b/lib/pure/collections/deques.nim
index 7e9ed32f3..60e0fd351 100644
--- a/lib/pure/collections/deques.nim
+++ b/lib/pure/collections/deques.nim
@@ -440,7 +440,7 @@ proc shrink*[T](deq: var Deque[T], fromFirst = 0, fromLast = 0) =
     deq.head = (deq.head + 1) and deq.mask
 
   for i in 0 ..< fromLast:
-    destroy(deq.data[deq.tail])
+    destroy(deq.data[(deq.tail - 1) and deq.mask])
     deq.tail = (deq.tail - 1) and deq.mask
 
   dec deq.count, fromFirst + fromLast