| #include <metal_stdlib> | 
 |  | 
 | using namespace metal; | 
 |  | 
 | template<typename T, size_t N> | 
 | struct tint_array { | 
 |     const constant T& operator[](size_t i) const constant { return elements[i]; } | 
 |     device T& operator[](size_t i) device { return elements[i]; } | 
 |     const device T& operator[](size_t i) const device { return elements[i]; } | 
 |     thread T& operator[](size_t i) thread { return elements[i]; } | 
 |     const thread T& operator[](size_t i) const thread { return elements[i]; } | 
 |     threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } | 
 |     const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } | 
 |     T elements[N]; | 
 | }; | 
 |  | 
 | struct S { | 
 |   int m; | 
 |   tint_array<uint, 4> n; | 
 | }; | 
 |  | 
 | uint f() { | 
 |   tint_array<S, 2> a = tint_array<S, 2>{}; | 
 |   return a[1].n[1]; | 
 | } | 
 |  |