From dd32414bd7332c55dc37ea2972ffcca73328d834 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 21 Mar 2024 15:45:27 -0700
Subject: Diagnose cyclic references in inheritance graph. (#3811)

---
 tests/bugs/gh-3808.slang | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 tests/bugs/gh-3808.slang

(limited to 'tests')

diff --git a/tests/bugs/gh-3808.slang b/tests/bugs/gh-3808.slang
new file mode 100644
index 000000000..088a41985
--- /dev/null
+++ b/tests/bugs/gh-3808.slang
@@ -0,0 +1,22 @@
+//TEST:SIMPLE(filecheck=CHECK): -target spirv -emit-spirv-directly
+
+// CHECK: cyclic reference
+interface IFoo { void ff(); }
+interface I : IFoo,K { void doThing(); } // ': I' is the problem.
+interface J : K {}
+interface K : I { void doThingK(); }
+struct S<T: I> {
+ T t;
+}
+
+void t<T : I>(T j)
+{
+    j.doThing();
+}
+
+[shader("compute")]
+[numthreads(1,1,1)]
+void main()
+{
+
+}
\ No newline at end of file
-- 
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