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48 lines
1.4 KiB
48 lines
1.4 KiB
4 months ago
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<typename T, typename U = float> struct A { };
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typedef A<int> A_int;
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typedef float FLOAT;
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A<int, FLOAT> *foo(A<int> *ptr, A<int> const *ptr2, A<int, double> *ptr3) {
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if (ptr)
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return ptr; // okay
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else if (ptr2)
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return ptr2; // expected-error{{cannot initialize return object of type 'A<int, FLOAT> *' (aka 'A<int, float> *') with an lvalue of type 'const A<int> *'}}
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else {
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return ptr3; // expected-error{{cannot initialize return object of type 'A<int, FLOAT> *' (aka 'A<int, float> *') with an lvalue of type 'A<int, double> *'}}
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}
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}
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template<int I> struct B;
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const int value = 12;
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B<17 + 2> *bar(B<(19)> *ptr1, B< (::value + 7) > *ptr2, B<19 - 3> *ptr3) {
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if (ptr1)
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return ptr1;
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else if (ptr2)
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return ptr2;
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else
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return ptr3; // expected-error{{cannot initialize return object of type 'B<17 + 2> *' with an lvalue of type 'B<19 - 3>}}
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}
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typedef B<5> B5;
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namespace N {
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template<typename T> struct C {};
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}
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N::C<int> c1;
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typedef N::C<float> c2;
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// PR5655
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template<typename T> struct Foo { }; // expected-note{{template is declared here}}
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void f(void) { Foo bar; } // expected-error{{use of class template 'Foo' requires template arguments}}
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// rdar://problem/8254267
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template <typename T> class Party;
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template <> class Party<T> { friend struct Party<>; }; // expected-error {{use of undeclared identifier 'T'}}
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