30     std::span<               int>   sp;  in checkCV()
32     std::span<      volatile int>  vsp;  in checkCV()
35     std::span<               int, 0>   sp0;  in checkCV()
37     std::span<      volatile int, 0>  vsp0;  in checkCV()
42         std::span<const          int> s1{  sp}; // a span<const          int> pointing at int.  in checkCV()
43         std::span<      volatile int> s2{  sp}; // a span<      volatile int> pointing at int.  in checkCV()
44         std::span<const volatile int> s3{  sp}; // a span<const volatile int> pointing at int.  in checkCV()
45 …    std::span<const volatile int> s4{ vsp}; // a span<const volatile int> pointing at volatile int.  in checkCV()
51         std::span<const          int, 0> s1{  sp0}; // a span<const          int> pointing at int.  in checkCV()
52         std::span<      volatile int, 0> s2{  sp0}; // a span<      volatile int> pointing at int.  in checkCV()
53         std::span<const volatile int, 0> s3{  sp0}; // a span<const volatile int> pointing at int.  in checkCV()
54 …std::span<const volatile int, 0> s4{ vsp0}; // a span<const volatile int> pointing at volatile int.  in checkCV()
60         std::span<const          int> s1{  sp0};    // a span<const          int> pointing at int.  in checkCV()
61         std::span<      volatile int> s2{  sp0};    // a span<      volatile int> pointing at int.  in checkCV()
62         std::span<const volatile int> s3{  sp0};    // a span<const volatile int> pointing at int.  in checkCV()
63 …std::span<const volatile int> s4{ vsp0};    // a span<const volatile int> pointing at volatile int.  in checkCV()
69         std::span<const          int, 0> s1{  sp};  // a span<const          int> pointing at int.  in checkCV()
70         std::span<      volatile int, 0> s2{  sp};  // a span<      volatile int> pointing at int.  in checkCV()
71         std::span<const volatile int, 0> s3{  sp};  // a span<const volatile int> pointing at int.  in checkCV()
72 …std::span<const volatile int, 0> s4{ vsp};  // a span<const volatile int> pointing at volatile int.  in checkCV()
81     std::span<T>    s0{};  in testConstexprSpan()
82     std::span<T, 0> s1(s0); // dynamic -> static  in testConstexprSpan()
83     std::span<T>    s2(s1); // static -> dynamic  in testConstexprSpan()
84     ASSERT_NOEXCEPT(std::span<T>   {s0});  in testConstexprSpan()
85     ASSERT_NOEXCEPT(std::span<T, 0>{s1});  in testConstexprSpan()
86     ASSERT_NOEXCEPT(std::span<T>   {s1});  in testConstexprSpan()
87     ASSERT_NOEXCEPT(std::span<T, 0>{s0});  in testConstexprSpan()
98     std::span<T>    s0{};  in testRuntimeSpan()
99     std::span<T, 0> s1(s0); // dynamic -> static  in testRuntimeSpan()
100     std::span<T>    s2(s1); // static -> dynamic  in testRuntimeSpan()
101     ASSERT_NOEXCEPT(std::span<T>   {s0});  in testRuntimeSpan()
102     ASSERT_NOEXCEPT(std::span<T, 0>{s1});  in testRuntimeSpan()
103     ASSERT_NOEXCEPT(std::span<T>   {s1});  in testRuntimeSpan()
104     ASSERT_NOEXCEPT(std::span<T, 0>{s0});  in testRuntimeSpan()
115     std::span<Src>    s0d{};  in testConversionSpan()
116     std::span<Src>    s0s{};  in testConversionSpan()
117     std::span<Dest, 0> s1(s0d); // dynamic -> static  in testConversionSpan()
118     std::span<Dest>    s2(s0s); // static -> dynamic  in testConversionSpan()