fix #13417 (#13712)

* fix #13417 * add test
2020-03-22 20:03:51 +01:00 · 2020-03-22 20:03:51 +01:00 · a5f02cac85
commit a5f02cac85
parent 64ffa17f0f
2 changed files with 31 additions and 11 deletions
--- a/tests/iter/titer_issues.nim
+++ b/tests/iter/titer_issues.nim
@ -213,3 +213,24 @@ block t2023_objiter:

  var o = init()
  echo(o.iter())
+
+block:
+  # bug #13417
+
+  var effectCounterP1 = 0
+
+  proc p1(): seq[int] =
+     inc effectCounterP1
+     @[1,2]
+
+  iterator ip1(v: openArray[int]): auto =
+     for x in v:
+        yield x
+
+  var effectCounterLoop = 0
+
+  for x in ip1(p1()):
+    inc effectCounterLoop
+
+  doAssert effectCounterP1 == 1
+  doAssert effectCounterLoop == 2