llvm-project/clang/test/SemaTemplate/overload-uneval.cpp
Chandler Carruth 463394752b Whitelist operator== and operator!= as valid for unused value warnings,
even when overloaded and user-defined. These operators are both more
valuable to warn on (due to likely typos) and extremely unlikely to be
reasonable for use to trigger side-effects.

llvm-svn: 137823
2011-08-17 09:49:44 +00:00

43 lines
647 B
C++

// RUN: %clang_cc1 -fsyntax-only -verify -Wno-unused %s
// Tests that overload resolution is treated as an unevaluated context.
// PR5541
struct Foo
{
Foo *next;
};
template <typename>
struct Bar
{
};
template <typename T>
class Wibble
{
typedef Bar<T> B;
static inline B *concrete(Foo *node) {
int a[sizeof(T) ? -1 : -1];
return reinterpret_cast<B *>(node);
}
public:
class It
{
Foo *i;
public:
inline operator B *() const { return concrete(i); }
inline bool operator!=(const It &o) const { return i !=
o.i; }
};
};
void f() {
Wibble<void*>::It a, b;
a != b;
}