1 files changed, 52 insertions, 0 deletions
diff --git a/tests/language-feature/zero-initialize/IDefaultExplicit-wrapper-type.slang b/tests/language-feature/zero-initialize/IDefaultExplicit-wrapper-type.slang
new file mode 100644
index 000000000..fd08b5bee
--- /dev/null
+++ b/tests/language-feature/zero-initialize/IDefaultExplicit-wrapper-type.slang
@@ -0,0 +1,52 @@
+//TEST:SIMPLE(filecheck=CHECK): -target glsl -stage compute -entry computeMain
+// CHECK: {{.* }}= 0;
+// CHECK-NOT: {{.* }}= 0;
+
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-vk -compute -entry computeMain -allow-glsl
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-vk -compute -entry computeMain -emit-spirv-directly -allow-glsl
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-cpu -compute -entry computeMain -allow-glsl
+//TEST(smoke,compute):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-dx12 -use-dxil -compute -entry computeMain -allow-glsl -profile sm_6_2 -xslang -DDX12
+
+//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+struct Base : IDefaultInitializableType
+{
+    int data1;
+};
+
+struct idefault1_base : IDefaultInitializableType
+{
+};
+interface idefault2_base : IDefaultInitializableType
+{
+};
+
+struct idefault1 : idefault1_base = Base;
+
+struct idefault2 : idefault2_base = Base;
+
+idefault1 getDefault1()
+{
+    idefault1 default1;
+    return default1;
+}
+idefault2 getDefault2()
+{
+    idefault2 default2;
+    return default2;
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID: SV_DispatchThreadID)
+{
+    // BUF: 1
+    idefault1 default1 = getDefault1();
+    idefault2 default2 = getDefault2();
+
+    outputBuffer[0] = true
+        && default1.inner.data1 == 0
+        
+        && default2.inner.data1 == 0
+        ;
+}