1a5728872c7702ddd09537c95bc3cbd20e1f2fb09Daniel Dunbar// RUN: %clang_cc1 -fsyntax-only -verify %s 2ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregortemplate<typename T> struct vector; 3ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregor 416df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor// C++ [temp.class.spec]p6: 516df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregornamespace N { 616df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor namespace M { 716df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor template<typename T> struct A; // expected-note{{here}} 816df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor } 916df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor} 1016df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor 1116df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregortemplate<typename T> 12d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smithstruct N::M::A<T*> { }; // expected-warning{{C++11 extension}} 13e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor 1416df850bb73e8e2a3dece830b59785ff167428bcDouglas Gregor// C++ [temp.class.spec]p9 15e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor// bullet 1 16e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <int I, int J> struct A {}; 17e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <int I> struct A<I+5, I*2> {}; // expected-error{{depends on}} 18e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <int I, int J> struct B {}; 19e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <int I> struct B<I, I> {}; //OK 20e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor 21e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor// bullet 2 22e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <class T, T t> struct C {}; // expected-note{{declared here}} 23e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <class T> struct C<T, 1>; // expected-error{{specializes}} 24e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate <class T, T* t> struct C<T*, t>; // okay 25e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor 26e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregortemplate< int X, int (*array_ptr)[X] > class A2 {}; // expected-note{{here}} 27e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregorint array[5]; 28d5cb8765ad3841ead8eaacb0360ac385f2f0e080Douglas Gregortemplate< int X > class A2<X, &array> { }; // expected-error{{specializes}} 29e94866ffc12d33d30b351f30aac4aa3828bc05d7Douglas Gregor 30ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregortemplate<typename T, int N, template<typename X> class TT> 31ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregorstruct Test0; 32ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregor 336aa75cfbdd473cb8fb2a2261abf7e9d3c8389bcaDouglas Gregor// bullet 3 346aa75cfbdd473cb8fb2a2261abf7e9d3c8389bcaDouglas Gregortemplate<typename T, int N, template<typename X> class TT> 356aa75cfbdd473cb8fb2a2261abf7e9d3c8389bcaDouglas Gregorstruct Test0<T, N, TT>; // expected-error{{does not specialize}} 366aa75cfbdd473cb8fb2a2261abf7e9d3c8389bcaDouglas Gregor 376aa75cfbdd473cb8fb2a2261abf7e9d3c8389bcaDouglas Gregor// C++ [temp.class.spec]p10 38ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregortemplate<typename T = int, // expected-error{{default template argument}} 39ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregor int N = 17, // expected-error{{default template argument}} 40ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregor template<typename X> class TT = ::vector> // expected-error{{default template argument}} 41ba1ecb564c05c2b749193e8deef1df3b69ea3f54Douglas Gregor struct Test0<T*, N, TT> { }; 42031a5880e19d06624551aed9d74594356f4f9db1Douglas Gregor 43031a5880e19d06624551aed9d74594356f4f9db1Douglas Gregortemplate<typename T> struct Test1; 44031a5880e19d06624551aed9d74594356f4f9db1Douglas Gregortemplate<typename T, typename U> // expected-note{{non-deducible}} 45031a5880e19d06624551aed9d74594356f4f9db1Douglas Gregor struct Test1<T*> { }; // expected-warning{{never be used}} 46