Fix type checking for constructors in generic interfaces. (#3799)

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/bugs/gh-3792.slang b/tests/bugs/gh-3792.slang
new file mode 100644
index 000000000..6b6a7451c
--- /dev/null
+++ b/tests/bugs/gh-3792.slang
@@ -0,0 +1,25 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=BUF): -shaderobj -output-using-type
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+
+interface From<X> {
+  __init(const X x);
+}
+extension float: From<float> {
+  __init(const float x) { this = x; }
+}
+T test<T : From<float>>(float v)
+{
+    T u;
+    u = T(5.0f);
+    return u;
+}
+
+RWStructuredBuffer<float> outputBuffer;
+[numthreads(1,1,1)]
+void computeMain()
+{
+    float v = test<float>(5.0);
+    //BUF: 5.0
+    outputBuffer[0] = v;
+}
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