Fix type checking around generic array types. (#3568)

1 files changed, 42 insertions, 0 deletions

diff --git a/tests/language-feature/generics/generic-interface-2.slang b/tests/language-feature/generics/generic-interface-2.slang
new file mode 100644
index 000000000..9a44f679c
--- /dev/null
+++ b/tests/language-feature/generics/generic-interface-2.slang
@@ -0,0 +1,42 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -shaderobj -output-using-type
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk -shaderobj -output-using-type
+
+interface IFoo<let n: uint>
+{
+    static int sum(int arr[n]);
+}
+
+struct MyType<let n:uint> : IFoo<n>
+{
+    static int sum(int arr[n])
+    {
+        int rs = 0;
+        for (int i = 0; i < n; i++)
+            rs += arr[i];
+        return rs;
+    }
+}
+
+int test<let n:uint>(IFoo<n> foo)
+{
+    int arr[n];
+    for (int i =0; i < n; i++)
+        arr[i] = i;
+    return foo.sum(arr);
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
+{
+    MyType<3> t;
+    test(t);
+    // CHECK: 3
+    outputBuffer[0] = test(t);
+
+    int arr[3] = {1,2,3};
+    // CHECK: 3
+    outputBuffer[1] = MyType<3>.sum(arr);
+}