llvm-project/clang/test/SemaTemplate/instantiate-subscript.cpp

42 lines
844 B
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
struct Sub0 {
int &operator[](int);
};
struct Sub1 {
long &operator[](long); // expected-note{{candidate function}}
};
struct ConvertibleToInt {
operator int();
};
template<typename T, typename U, typename Result>
struct Subscript0 {
void test(T t, U u) {
Result &result = t[u]; // expected-error{{no viable overloaded operator[] for type}}
}
};
template struct Subscript0<int*, int, int&>;
template struct Subscript0<Sub0, int, int&>;
template struct Subscript0<Sub1, ConvertibleToInt, long&>;
template struct Subscript0<Sub1, Sub0, long&>; // expected-note{{instantiation}}
// PR5345
template <typename T>
struct S {
bool operator[](int n) const { return true; }
};
template <typename T>
void Foo(const S<int>& s, T x) {
if (s[0]) {}
}
void Bar() {
Foo(S<int>(), 0);
}