Small type system fixes. (#3265)

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/diagnostics/property-readonly-lvalue.slang b/tests/diagnostics/property-readonly-lvalue.slang
new file mode 100644
index 000000000..ec7263f17
--- /dev/null
+++ b/tests/diagnostics/property-readonly-lvalue.slang
@@ -0,0 +1,14 @@
+//DIAGNOSTIC_TEST:SIMPLE(filecheck=CHECK):
+// use read-only property as l-value
+
+struct MyType
+{
+    property float3 prop { get { return float3(1, 2, 3);}}
+}
+
+void test()
+{
+    MyType t;
+    // CHECK: {{.*}}error 30047: argument passed to parameter '0' must be l-value.
+    t.prop.x += 1.0;
+}