1 files changed, 103 insertions, 0 deletions
diff --git a/tests/language-feature/zero-initialize/IDefaultExplicit.slang b/tests/language-feature/zero-initialize/IDefaultExplicit.slang
new file mode 100644
index 000000000..78c6b1596
--- /dev/null
+++ b/tests/language-feature/zero-initialize/IDefaultExplicit.slang
@@ -0,0 +1,103 @@
+//TEST:SIMPLE(filecheck=CHECK): -target glsl -stage compute -entry computeMain
+// CHECK-COUNT-6: {{.* }}= 0U;
+
+//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 idefault1 : IDefaultInitializableType
+{
+    uint data;
+};
+
+struct idefault2_base : IDefaultInitializableType
+{
+    uint data1;
+};
+struct idefault2 : idefault2_base
+{
+    uint data2 = 1;
+};
+
+interface idefault3_base : IDefaultInitializableType
+{
+};
+struct idefault3 : idefault3_base
+{
+    uint data;
+};
+
+struct idefault4
+{
+    uint data;
+};
+
+extension idefault4 : IDefaultInitializableType
+{
+}
+
+struct idefault5_base : IDefaultInitializableType
+{
+    uint data1;
+};
+
+struct idefault5 : idefault5_base
+{
+    uint data2;
+};
+
+idefault1 getDefault1()
+{
+    idefault1 default1;
+    return default1;
+}
+idefault2 getDefault2()
+{
+    idefault2 default2;
+    return default2;
+}
+idefault3 getDefault3()
+{
+    idefault3 default3;
+    return default3;
+}
+idefault4 getDefault4()
+{
+    idefault4 default4;
+    return default4;   
+}
+
+idefault5 getDefault5()
+{
+    idefault5 default5;
+    return default5;
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID: SV_DispatchThreadID)
+{
+    // BUF: 1
+    idefault1 default1 = getDefault1();
+    idefault2 default2 = getDefault2();
+    idefault3 default3 = getDefault3();
+    idefault4 default4 = getDefault4();
+    idefault5 default5 = getDefault5();
+
+    outputBuffer[0] = true
+        && default1.data == 0
+
+        && default2.data1 == 0
+        && default2.data2 == 1
+
+        && default3.data == 0
+
+        && default4.data == 0
+
+        && default5.data1 == 0
+        && default5.data2 == 0
+        ;
+}