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// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify %s
template<typename T, typename U>
struct X0 {
void f(T x, U y) {
(void)(x + y); // expected-error{{invalid operands}}
}
};
struct X1 { };
template struct X0<int, float>;
template struct X0<int*, int>;
template struct X0<int X1::*, int>; // expected-note{{instantiation of}}
template<typename T>
struct X2 {
void f(T);
T g(T x, T y) {
/* DeclStmt */;
T *xp = &x, &yr = y; // expected-error{{pointer to a reference}}
/* NullStmt */;
}
};
template struct X2<int>;
template struct X2<int&>; // expected-note{{instantiation of}}
template<typename T>
struct X3 {
void f(T) {
Label:
T x;
goto Label;
}
};
template struct X3<int>;
template <typename T> struct X4 {
T f() const {
return; // expected-error{{non-void function 'f' should return a value}}
}
T g() const {
return 1; // expected-error{{void function 'g' should not return a value}}
}
};
template struct X4<void>; // expected-note{{in instantiation of}}
template struct X4<int>; // expected-note{{in instantiation of}}
struct Incomplete; // expected-note 2{{forward declaration}}
template<typename T> struct X5 {
T f() { } // expected-error{{incomplete result type}}
};
void test_X5(X5<Incomplete> x5); // okay!
template struct X5<Incomplete>; // expected-note{{instantiation}}
template<typename T, typename U, typename V> struct X6 {
U f(T t, U u, V v) {
// IfStmt
if (t > 0)
return u;
else {
if (t < 0)
return v; // expected-error{{cannot initialize return object of type}}
}
if (T x = t) {
t = x;
}
return v; // expected-error{{cannot initialize return object of type}}
}
};
struct ConvertibleToInt {
operator int() const;
};
template struct X6<ConvertibleToInt, float, char>;
template struct X6<bool, int, int*>; // expected-note{{instantiation}}
template <typename T> struct X7 {
void f() {
void *v = this;
}
};
template struct X7<int>;
template<typename T> struct While0 {
void f(T t) {
while (t) {
}
while (T t2 = T()) ;
}
};
template struct While0<float>;
template<typename T> struct Do0 {
void f(T t) {
do {
} while (t); // expected-error{{not contextually}}
}
};
struct NotConvertibleToBool { };
template struct Do0<ConvertibleToInt>;
template struct Do0<NotConvertibleToBool>; // expected-note{{instantiation}}
template<typename T> struct For0 {
void f(T f, T l) {
for (; f != l; ++f) {
if (*f)
continue;
else if (*f == 17)
break;
}
}
};
template struct For0<int*>;
template<typename T> struct Member0 {
void f(T t) {
t;
t.f;
t->f;
T* tp;
tp.f; // expected-error{{member reference base type 'T *' is not a structure or union}}
tp->f;
this->f;
this.f; // expected-error{{member reference base type 'Member0<T> *' is not a structure or union}}
}
};
template<typename T, typename U> struct Switch0 {
U f(T value, U v0, U v1, U v2) {
switch (value) {
case 0: return v0;
case 1: return v1;
case 2: // fall through
default:
return v2;
}
}
};
template struct Switch0<int, float>;
template<typename T, int I1, int I2> struct Switch1 {
T f(T x, T y, T z) {
switch (x) {
case I1: return y; // expected-note{{previous}}
case I2: return z; // expected-error{{duplicate}}
default: return x;
}
}
};
template struct Switch1<int, 1, 2>;
template struct Switch1<int, 2, 2>; // expected-note{{instantiation}}
template<typename T> struct IndirectGoto0 {
void f(T x) {
// FIXME: crummy error message below
goto *x; // expected-error{{incompatible}}
prior:
T prior_label;
prior_label = &&prior; // expected-error{{assigning to 'int'}}
T later_label;
later_label = &&later; // expected-error{{assigning to 'int'}}
later:
(void)(1+1);
}
};
template struct IndirectGoto0<void*>;
template struct IndirectGoto0<int>; // expected-note{{instantiation}}
template<typename T> struct TryCatch0 {
void f() {
try {
} catch (T t) { // expected-error{{incomplete type}} \
// expected-error{{abstract class}}
} catch (...) {
}
}
};
struct Abstract {
virtual void foo() = 0; // expected-note{{pure virtual}}
};
template struct TryCatch0<int>; // okay
template struct TryCatch0<Incomplete*>; // expected-note{{instantiation}}
template struct TryCatch0<Abstract>; // expected-note{{instantiation}}
// PR4383
template<typename T> struct X;
template<typename T> struct Y : public X<T> {
Y& x() { return *this; }
};
// Make sure our assertions don't get too uppity.
namespace test0 {
template <class T> class A { void foo(T array[10]); };
template class A<int>;
}
namespace PR7016 {
template<typename T> void f() { T x = x; }
template void f<int>();
}
namespace PR9880 {
struct lua_State;
struct no_tag { char a; }; // (A)
struct yes_tag { long a; long b; }; // (A)
template <typename T>
struct HasIndexMetamethod {
template <typename U>
static no_tag check(...);
template <typename U>
static yes_tag check(char[sizeof(&U::luaIndex)]);
enum { value = sizeof(check<T>(0)) == sizeof(yes_tag) };
};
class SomeClass {
public:
int luaIndex(lua_State* L);
};
int i = HasIndexMetamethod<SomeClass>::value;
}
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