1 files changed, 16 insertions, 0 deletions
diff --git a/tests/effects/thooks.nim b/tests/effects/thooks.nim
new file mode 100644
index 000000000..23cc005cd
--- /dev/null
+++ b/tests/effects/thooks.nim
@@ -0,0 +1,16 @@
+discard """
+  matrix: "--warningAsError:Effect"
+"""
+
+import std/isolation
+
+# bug #23129
+type
+  Thing = object
+    x: string
+
+proc send(x: string) =
+  let wrapper = Thing(x: x)
+  discard isolate(wrapper)
+
+send("la")
\ No newline at end of file