1 files changed, 33 insertions, 0 deletions
diff --git a/tests/vm/tstring_openarray.nim b/tests/vm/tstring_openarray.nim
new file mode 100644
index 000000000..9318344f8
--- /dev/null
+++ b/tests/vm/tstring_openarray.nim
@@ -0,0 +1,33 @@
+
+# tests various bug when passing string to openArray argument in VM.
+# bug #6086
+proc map*[T, S](data: openArray[T], op: proc (x: T): S {.closure.}):
+                                                            seq[S]{.inline.} =
+# map inlined from sequtils
+  newSeq(result, data.len)
+  for i in 0..data.len-1: result[i] = op(data[i])
+
+
+proc set_all[T](s: var openArray[T]; val: T) =
+  for i in 0..<s.len:
+    s[i] = val
+
+proc main() =
+  var a0 = "hello_world"
+  var a1 = [1,2,3,4,5,6,7,8,9]
+  var a2 = @[1,2,3,4,5,6,7,8,9]
+  a0.set_all('i')
+  a1.set_all(4)
+  a2.set_all(4)
+  doAssert a0 == "iiiiiiiiiii"
+  doAssert a1 == [4,4,4,4,4,4,4,4,4]
+  doAssert a2 == @[4,4,4,4,4,4,4,4,4]
+
+const constval0 = "hello".map(proc(x: char): char = x)
+const constval1 = [1,2,3,4].map(proc(x: int): int = x)
+
+doAssert("hello".map(proc(x: char): char = x) == constval0)
+doAssert([1,2,3,4].map(proc(x: int): int = x) == constval1)
+
+static: main()
+main()