Fix the issue in resolving the overload functions (#5060)

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/bugs/overload-ambiguous.slang b/tests/bugs/overload-ambiguous.slang
new file mode 100644
index 000000000..1b74cb68c
--- /dev/null
+++ b/tests/bugs/overload-ambiguous.slang
@@ -0,0 +1,48 @@
+// https://github.com/shader-slang/slang/issues/4476
+
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-cuda -compute -shaderobj
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-cpu -compute -shaderobj
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-slang -compute -shaderobj
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-slang -compute -dx12 -shaderobj
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=BUF):-vk -compute -shaderobj
+
+//TEST_INPUT:ubuffer(data=[0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<uint> outputBuffer;
+
+
+uint getData()
+{
+    return 1u;
+}
+
+struct DataObtainer
+{
+    uint data;
+    uint getData()
+    {
+        return data;
+    }
+
+    uint getValue()
+    {
+        return getData(); // will call DataObtainer::getData()
+    }
+
+    uint getValue2()
+    {
+        return ::getData(); // will call global getData()
+    }
+}
+
+RWStructuredBuffer<uint> output;
+
+[numthreads(1, 1, 1)]
+[shader("compute")]
+void computeMain(uint3 threadID: SV_DispatchThreadID)
+{
+    DataObtainer obtainer = {2u};
+    outputBuffer[0] = obtainer.getValue();
+    outputBuffer[1] = obtainer.getValue2();
+    // BUF: 2
+    // BUF-NEXT: 1
+}