fixes #1796

tests/gc/closureleak.nim

@@ -7,7 +7,7 @@ from strutils import join
 type
   TFoo * = object
     id: int
-    func: proc(){.closure.}
+    fn: proc(){.closure.}
 var foo_counter = 0
 var alive_foos = newseq[int](0)
 
@@ -26,7 +26,7 @@ for i in 0 .. <10:
 
 for i in 0 .. <10:
   let f = newFoo()
-  f.func = proc = 
+  f.fn = proc = 
     echo f.id
 
 GC_fullcollect()

tests/gc/cyclecollector.nim

@@ -0,0 +1,21 @@
+
+# Program to detect bug #1796 reliably
+
+type
+  Node = ref object
+    a, b: Node
+    leaf: string
+
+proc createCycle(leaf: string): Node =
+  new result
+  result.a = result
+  shallowCopy result.leaf, leaf
+
+proc main =
+  for i in 0 .. 100_000:
+    var leaf = "this is the leaf. it allocates"
+    let x = createCycle(leaf)
+    let y = createCycle(leaf)
+  echo "done ", getOccupiedMem()
+
+main()

tests/gc/gctest.nim

@@ -196,7 +196,8 @@ write(stdout, "starting main...\n")
 main()
 
 GC_fullCollect()
+# the M&S GC fails with this call and it's unclear why. Definitely something
+# we need to fix!
 GC_fullCollect()
 writeln(stdout, GC_getStatistics())
 write(stdout, "finished\n")
-