--- /dev/null
+#pragma MSP stage(vertex)
+layout(location=0) in vec4 position;
+vec2 scale(vec2 v, float s)
+{
+ return v*s;
+}
+void main()
+{
+ gl_Position = vec4(scale(position.xy, 2), 0.0, 1.0);
+}
+
+/* Expected output: vertex
+layout(location=0) in vec4 position;
+void main()
+{
+ gl_Position = vec4(position.xy*float(2), 0.0, 1.0);
+}
+*/