llvm-project/clang/test/SemaTemplate/instantiate-member-class.cpp

53 lines
1.2 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T>
class X {
public:
struct C { T &foo(); };
struct D {
struct E { T &bar(); }; // expected-error{{cannot form a reference to 'void'}}
struct F; // expected-note{{member is declared here}}
};
};
X<int>::C *c1;
X<float>::C *c2;
X<int>::X *xi;
X<float>::X *xf;
void test_naming() {
c1 = c2; // expected-error{{incompatible type assigning 'X<float>::C *', expected 'X<int>::C *'}}
xi = xf; // expected-error{{incompatible type assigning}}
// FIXME: error above doesn't print the type X<int>::X cleanly!
}
void test_instantiation(X<double>::C *x,
X<float>::D::E *e,
X<float>::D::F *f) {
double &dr = x->foo();
float &fr = e->bar();
f->foo(); // expected-error{{implicit instantiation of undefined member 'struct X<float>::D::F'}}
}
X<void>::C *c3; // okay
X<void>::D::E *e1; // okay
X<void>::D::E e2; // expected-note{{in instantiation of member class 'struct X<void>::D::E' requested here}}
// Redeclarations.
namespace test1 {
template <typename T> struct Registry {
class node;
static node *Head;
class node {
node(int v) { Head = this; }
};
};
void test() {
Registry<int>::node node(0);
}
}