2 files changed, 54 insertions, 0 deletions
diff --git a/tests/openarray/topenarray.nim b/tests/openarray/topenarray.nim
index c752becf2..25b983651 100644
--- a/tests/openarray/topenarray.nim
+++ b/tests/openarray/topenarray.nim
@@ -48,6 +48,41 @@ proc main =
       doAssert testing(mySeq) == mySeq
       doAssert testing(mySeq[2..^2]) == mySeq[2..^2]
 
+  block: # bug #23321
+    block:
+      proc foo(x: openArray[int]) =
+        doAssert x[0] == 0
+
+      var d = new array[1, int]
+      foo d[].toOpenArray(0, 0)
+
+    block:
+      proc foo(x: openArray[int]) =
+        doAssert x[0] == 0
+
+      proc task(x: var array[1, int]): var array[1, int] =
+        result = x
+      var d: array[1, int]
+      foo task(d).toOpenArray(0, 0)
+
+    block:
+      proc foo(x: openArray[int]) =
+        doAssert x[0] == 0
+
+      proc task(x: var array[1, int]): lent array[1, int] =
+        result = x
+      var d: array[1, int]
+      foo task(d).toOpenArray(0, 0)
+
+    block:
+      proc foo(x: openArray[int]) =
+        doAssert x[0] == 0
+
+      proc task(x: var array[1, int]): ptr array[1, int] =
+        result = addr x
+      var d: array[1, int]
+      foo task(d)[].toOpenArray(0, 0)
+
 
 main()
 static: main()
diff --git a/tests/openarray/tuncheckedarray.nim b/tests/openarray/tuncheckedarray.nim
new file mode 100644
index 000000000..c8ca9d2d4
--- /dev/null
+++ b/tests/openarray/tuncheckedarray.nim
@@ -0,0 +1,19 @@
+discard """
+  exitcode: 0
+  targets: "c cpp"
+"""
+
+proc main =
+  block: # issue 19171
+    var a = ['A']
+    proc mutB(x: var openArray[char]) =
+      x[0] = 'B'
+    mutB(toOpenArray(cast[ptr UncheckedArray[char]](addr a), 0, 0))
+    doAssert a[0] == 'B'
+    proc mutC(x: var openArray[char]; c: char) =
+      x[0] = c
+    let p = cast[ptr UncheckedArray[char]](addr a)
+    mutC(toOpenArray(p, 0, 0), 'C')
+    doAssert p[0] == 'C'
+
+main()