Check mismatching method parameter direction against interface declaration. (#5964)

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/language-feature/modules/wrapper-inout.slang b/tests/language-feature/modules/wrapper-inout.slang
new file mode 100644
index 000000000..5b7b9fbce
--- /dev/null
+++ b/tests/language-feature/modules/wrapper-inout.slang
@@ -0,0 +1,29 @@
+//TEST:COMPARE_COMPUTE(filecheck-buffer=CHECK): -output-using-type
+
+public interface ITest {
+    public int testDir(inout int a);
+};
+
+public struct TestImpl : ITest {
+    public int testDir(inout int a) {
+        int oldA = a;
+        a = 5;
+        return a;
+ }
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=output
+RWStructuredBuffer<int> output;
+
+public struct Test : ITest = TestImpl;
+
+[shader("compute")]
+[numthreads(1,1,1)]
+void computeMain()
+{
+    Test data;
+    int a = 516;
+    int b = data.testDir(a);
+    // CHECK: 5
+    output[0] = b;
+}
\ No newline at end of file