diff --git a/specs/claw/demo_broken.t27 b/specs/claw/demo_broken.t27
new file mode 100644
index 0000000000..148b1168d6
--- /dev/null
+++ b/specs/claw/demo_broken.t27
@@ -0,0 +1,3 @@
+; DEMO ONLY, never merged (#10356): a spec that does not parse, to show a TRI CLAW alert.
+module demo_broken;
+pub fn broken( -> {