1 // RUN: %clang_cc1 -std=c++11 %s -verify 2 3 namespace std { 4 typedef decltype(nullptr) nullptr_t; 5 } 6 7 template<int *ip> struct IP { // expected-note 4 {{template parameter is declared here}} 8 IP<ip> *ip2; 9 }; 10 11 constexpr std::nullptr_t get_nullptr() { return nullptr; } 12 13 constexpr std::nullptr_t np = nullptr; 14 15 std::nullptr_t nonconst_np; // expected-note{{declared here}} 16 17 IP<0> ip0; // expected-error{{null non-type template argument must be cast to template parameter type 'int *'}} 18 IP<(0)> ip1; // expected-error{{null non-type template argument must be cast to template parameter type 'int *'}} 19 IP<nullptr> ip2; 20 IP<get_nullptr()> ip3; 21 IP<(int*)0> ip4; 22 IP<np> ip5; 23 IP<nonconst_np> ip5; // expected-error{{non-type template argument of type 'std::nullptr_t' (aka 'nullptr_t') is not a constant expression}} \ 24 // expected-note{{read of non-constexpr variable 'nonconst_np' is not allowed in a constant expression}} 25 IP<(float*)0> ip6; // expected-error{{null non-type template argument of type 'float *' does not match template parameter of type 'int *'}} 26 27 struct X { }; 28 template<int X::*pm> struct PM { // expected-note 2 {{template parameter is declared here}} 29 PM<pm> *pm2; 30 }; 31 32 PM<0> pm0; // expected-error{{null non-type template argument must be cast to template parameter type 'int X::*'}} 33 PM<(0)> pm1; // expected-error{{null non-type template argument must be cast to template parameter type 'int X::*'}} 34 PM<nullptr> pm2; 35 PM<get_nullptr()> pm3; 36 PM<(int X::*)0> pm4; 37 PM<np> pm5; 38 39 template<int (X::*pmf)(int)> struct PMF { // expected-note 2 {{template parameter is declared here}} 40 PMF<pmf> *pmf2; 41 }; 42 43 PMF<0> pmf0; // expected-error{{null non-type template argument must be cast to template parameter type 'int (X::*)(int)'}} 44 PMF<(0)> pmf1; // expected-error{{null non-type template argument must be cast to template parameter type 'int (X::*)(int)'}} 45 PMF<nullptr> pmf2; 46 PMF<get_nullptr()> pmf3; 47 PMF<(int (X::*)(int))0> pmf4; 48 PMF<np> pmf5; 49 50 51 template<std::nullptr_t np> struct NP { // expected-note 2{{template parameter is declared here}} 52 NP<np> *np2; 53 }; 54 55 NP<nullptr> np1; 56 NP<np> np2; 57 NP<get_nullptr()> np3; 58 NP<0> np4; // expected-error{{null non-type template argument must be cast to template parameter type 'std::nullptr_t' (aka 'nullptr_t')}} 59 constexpr int i = 7; 60 NP<i> np5; // expected-error{{non-type template argument of type 'const int' cannot be converted to a value of type 'std::nullptr_t'}} 61
