4103 - continuations no longer cause memory corruption

1 files changed, 27 insertions, 0 deletions

diff --git a/continuation2.mu b/continuation2.mu
new file mode 100644
index 00000000..dda9d566
--- /dev/null
+++ b/continuation2.mu
@@ -0,0 +1,27 @@
+# example program showing that a 'paused' continuation can be 'resumed'
+# multiple times from the same point (but with changes to data)
+
+def main [
+  local-scope
+  l:&:list:num <- copy 0
+  l <- push 3, l
+  l <- push 2, l
+  l <- push 1, l
+  k:continuation <- call-with-continuation-mark create-yielder, l
+  {
+    x:num, done?:bool <- call k
+    break-if done?
+    $print x 10/newline
+    loop
+  }
+]
+
+def create-yielder l:&:list:num -> n:num, done?:bool [
+  local-scope
+  load-ingredients
+  return-continuation-until-mark
+  done? <- equal l, 0
+  return-if done?, 0
+  n <- first l
+  l <- rest l
+]