1 files changed, 47 insertions, 0 deletions
diff --git a/tests/initializer-list/partial-init.slang b/tests/initializer-list/partial-init.slang
new file mode 100644
index 000000000..55f3816fb
--- /dev/null
+++ b/tests/initializer-list/partial-init.slang
@@ -0,0 +1,47 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=BUFFER):-shaderobj -vk
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=BUFFER):-shaderobj
+
+struct PartialInit {
+  // warning: not all members are initialized.
+  // members should either be all-uninitialized or all-initialized with
+  // default expr.
+  int x;
+  int y = 1;
+  // compiler synthesizes:
+  // __init(int x, int y = 1);
+}
+
+struct PartialInit2 {
+  int x = 1;
+  int y;
+  // __init(int x, int y);
+}
+//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+void test()
+{
+  PartialInit p1 = {2}; // calls `__init`, result is `{2,1}`.
+  // BUFFER: 2
+  outputBuffer[0] = p1.x;
+  // BUFFER-NEXT: 1
+  outputBuffer[1] = p1.y;
+
+
+  PartialInit p2 = {2, 3}; // calls `__init`, result is {2, 3}
+  // BUFFER-NEXT: 2
+  outputBuffer[2] = p2.x;
+  // BUFFER-NEXT: 3
+  outputBuffer[3] = p2.y;
+
+  PartialInit2 p3 = {4, 5}; // calls `__init`, result is {4, 5}
+  // BUFFER-NEXT: 4
+  outputBuffer[4] = p3.x;
+  // BUFFER-NEXT: 5
+  outputBuffer[5] = p3.y;
+}
+
+[shader("compute")]
+void computeMain()
+{
+    test();
+}