3 files changed, 73 insertions, 0 deletions
diff --git a/tests/parallel/tarray_of_channels.nim b/tests/parallel/tarray_of_channels.nim
new file mode 100644
index 000000000..11b523401
--- /dev/null
+++ b/tests/parallel/tarray_of_channels.nim
@@ -0,0 +1,26 @@
+# bug #2257
+import threadpool
+
+type StringChannel = TChannel[string]
+var channels: array[1..3, StringChannel]
+
+type
+  MyObject[T] = object
+    x: T
+
+var global: MyObject[string]
+var globalB: MyObject[float]
+
+proc consumer(ix : int) {.thread.} =
+  echo channels[ix].recv() ###### not GC-safe: 'channels'
+  echo globalB
+
+proc main =
+  for ix in 1..3: channels[ix].open()
+  for ix in 1..3: spawn consumer(ix)
+  for ix in 1..3: channels[ix].send("test")
+  sync()
+  for ix in 1..3: channels[ix].close()
+
+when isMainModule:
+  main()
diff --git a/tests/parallel/tdont_be_stupid.nim b/tests/parallel/tdont_be_stupid.nim
new file mode 100644
index 000000000..a7e82466a
--- /dev/null
+++ b/tests/parallel/tdont_be_stupid.nim
@@ -0,0 +1,15 @@
+
+import threadpool, os
+
+proc single(time: int) =
+  sleep time
+  echo time
+
+proc sleepsort(nums: openArray[int]) =
+  parallel:
+    var i = 0
+    while i <= len(nums) + -1:
+      spawn single(nums[i])
+      i += 1
+
+sleepsort([50,3,40,25])
diff --git a/tests/parallel/tgc_unsafe.nim b/tests/parallel/tgc_unsafe.nim
new file mode 100644
index 000000000..6548bbec8
--- /dev/null
+++ b/tests/parallel/tgc_unsafe.nim
@@ -0,0 +1,32 @@
+discard """
+  errormsg: "'consumer' is not GC-safe"
+  line: 19
+"""
+
+# bug #2257
+import threadpool
+
+type StringChannel = TChannel[string]
+var channels: array[1..3, StringChannel]
+
+type
+  MyObject[T] = object
+    x: T
+
+var global: MyObject[string]
+var globalB: MyObject[float]
+
+proc consumer(ix : int) {.thread.} =
+  echo channels[ix].recv() ###### not GC-safe: 'channels'
+  echo global
+  echo globalB
+
+proc main =
+  for ix in 1..3: channels[ix].open()
+  for ix in 1..3: spawn consumer(ix)
+  for ix in 1..3: channels[ix].send("test")
+  sync()
+  for ix in 1..3: channels[ix].close()
+
+when isMainModule:
+  main()