Fix crash when using optional type in a generic. (#4341)

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/bugs/optional-generic.slang b/tests/bugs/optional-generic.slang
new file mode 100644
index 000000000..16b466273
--- /dev/null
+++ b/tests/bugs/optional-generic.slang
@@ -0,0 +1,22 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=BUF):-slang -compute
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=BUF):-slang -compute -vk
+
+
+Optional<T> genFunc<T : IArithmetic>(T v)
+{
+    if (v is int)
+        return v;
+    return none;
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name buffer
+
+RWStructuredBuffer<int> buffer;
+
+[numthreads(1,1,1)]
+void computeMain()
+{
+    // BUF: 2
+    buffer[0] = genFunc(2).value;
+}
+