1 files changed, 58 insertions, 0 deletions
diff --git a/tests/bugs/gh-6964.slang b/tests/bugs/gh-6964.slang
new file mode 100644
index 000000000..b283a17a8
--- /dev/null
+++ b/tests/bugs/gh-6964.slang
@@ -0,0 +1,58 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -dx12
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -cpu
+
+// CHECK: 1
+// CHECK-NEXT: 0
+// CHECK-NEXT: 2
+// CHECK-NEXT: 3
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+interface IThing
+{
+    void writeInfo(int i);
+}
+
+enum FirstEnum
+{
+    A,
+    B
+};
+
+enum SecondEnum
+{
+    C,
+    D=3
+};
+
+extension FirstEnum: IThing
+{
+    void writeInfo(int i)
+    {
+        outputBuffer[i] = 1;
+        outputBuffer[i+1] = this;
+    }
+}
+
+extension SecondEnum: IThing
+{
+    void writeInfo(int i)
+    {
+        outputBuffer[i] = 2;
+        outputBuffer[i+1] = this;
+    }
+}
+
+void indirectionFunc<T: IThing>(T val, int i)
+{
+    val.writeInfo(i);
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID: SV_DispatchThreadID)
+{
+    indirectionFunc(FirstEnum.A, 0);
+    indirectionFunc(SecondEnum.D, 2);
+}