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// RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-error=non-pod-varargs
extern char version[];
class C {
public:
C(int);
void g(int a, ...);
static void h(int a, ...);
};
void g(int a, ...);
void t1()
{
C c(10);
g(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}}
g(10, version);
}
void t2()
{
C c(10);
c.g(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}}
c.g(10, version);
C::h(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}}
C::h(10, version);
}
int (^block)(int, ...);
void t3()
{
C c(10);
block(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}}
block(10, version);
}
class D {
public:
void operator() (int a, ...);
};
void t4()
{
C c(10);
D d;
d(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}}
d(10, version);
}
class E {
E(int, ...); // expected-note 2{{implicitly declared private here}}
};
void t5()
{
C c(10);
E e(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} \
// expected-error{{calling a private constructor of class 'E'}}
(void)E(10, c); // expected-warning{{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} \
// expected-error{{calling a private constructor of class 'E'}}
}
// PR5761: unevaluated operands and the non-POD warning
class Foo {
public:
Foo() {}
};
int Helper(...);
const int size = sizeof(Helper(Foo()));
namespace std {
class type_info { };
}
struct Base { virtual ~Base(); };
Base &get_base(...);
int eat_base(...);
void test_typeid(Base &base) {
(void)typeid(get_base(base)); // expected-warning{{cannot pass object of non-POD type 'Base' through variadic function; call will abort at runtime}}
(void)typeid(eat_base(base)); // okay
}
// rdar://7985267 - Shouldn't warn, doesn't actually use __builtin_va_start is
// magic.
void t6(Foo somearg, ... ) {
__builtin_va_list list;
__builtin_va_start(list, somearg);
}
void t7(int n, ...) {
__builtin_va_list list;
__builtin_va_start(list, n);
(void)__builtin_va_arg(list, C); // expected-warning{{second argument to 'va_arg' is of non-POD type 'C'}}
__builtin_va_end(list);
}
struct Abstract {
virtual void doit() = 0; // expected-note{{unimplemented pure virtual method}}
};
void t8(int n, ...) {
__builtin_va_list list;
__builtin_va_start(list, n);
(void)__builtin_va_arg(list, Abstract); // expected-error{{second argument to 'va_arg' is of abstract type 'Abstract'}}
__builtin_va_end(list);
}
int t9(int n) {
// Make sure the error works in potentially-evaluated sizeof
return (int)sizeof(*(Helper(Foo()), (int (*)[n])0)); // expected-warning{{cannot pass object of non-POD type}}
}
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