1 files changed, 84 insertions, 0 deletions
diff --git a/tests/openarray/tptrarrayderef.nim b/tests/openarray/tptrarrayderef.nim
new file mode 100644
index 000000000..1b7ef0df0
--- /dev/null
+++ b/tests/openarray/tptrarrayderef.nim
@@ -0,0 +1,84 @@
+discard """
+  output: '''[1, 2, 3, 4]
+3
+['1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C']
+OK
+'''
+"""
+
+var
+  arr = [1,2,3]
+  arrp = addr(arr)
+  sss = @[4,5,6,7]
+  sssp = addr(sss)
+  ra = new(array[3, int])
+  raa = [11,12,13]
+
+#bug #3586
+proc mutate[T](arr:openArray[T], brr: openArray[T]) =
+  for i in 0..arr.len-1:
+    doAssert(arr[i] == brr[i])
+
+mutate(arr, arr)
+
+#bug #2240
+proc f(a: openArray[int], b: openArray[int]) =
+  for i in 0..a.len-1:
+   doAssert(a[i] == b[i])
+
+var a = [7,8,9]
+var p = addr a
+f(p[], a)
+f(sssp[], sss)
+
+ra[0] = 11
+ra[1] = 12
+ra[2] = 13
+f(ra[], raa)
+
+#bug #2240b
+proc fillBuffer(buf: var openArray[char]) =
+  for i in 0..buf.len-1:
+    buf[i] = chr(i)
+
+proc fillSeqBuffer(b: ref seq[char]) =
+  fillBuffer(b[])
+
+proc getFilledBuffer(sz: int): ref seq[char] =
+  let s : ref seq[char] = new(seq[char])
+  s[] = newSeq[char](sz)
+  fillBuffer(s[])
+  return s
+
+let aa = getFilledBuffer(3)
+for i in 0..aa[].len-1:
+  doAssert(aa[i] == chr(i))
+
+var
+  x = [1, 2, 3, 4]
+  y1 = block: (
+    a: (block:
+      echo x
+      cast[ptr array[2, int]](addr(x[0]))[]),
+    b: 3)
+  y2 = block:
+    echo y1.a[0] + y1.a[1]
+    cast[ptr array[4, int]](addr(x))[]
+doAssert y1 == ([1, 2], 3)
+doAssert y2 == [1, 2, 3, 4]
+
+template newOpenArray(x: var string, size: int): openArray[char] =
+  var z = 1
+  toOpenArray(x, z, size)
+
+template doSomethingAndCreate(x: var string): openArray[char] =
+  let size = 12
+  newOpenArray(x, size)
+
+proc sinkk(x: openArray[char]) =
+  echo x
+
+var xArrayDeref = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+sinkk doSomethingAndCreate(xArrayDeref)
+
+echo "OK"