42 lines
1.0 KiB
C++
42 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only %s
|
|
|
|
// This is a test for an egregious hack in Clang that works around
|
|
// issues with GCC's evolution. libstdc++ 4.2.x uses __is_pod as an
|
|
// identifier (to declare a struct template like the one below), while
|
|
// GCC 4.3 and newer make __is_pod a keyword. Clang treats __is_pod as
|
|
// a keyword *unless* it is introduced following the struct keyword.
|
|
|
|
template<typename T>
|
|
struct __is_pod {
|
|
__is_pod() {}
|
|
};
|
|
|
|
__is_pod<int> ipi;
|
|
|
|
// Ditto for __is_same.
|
|
template<typename T>
|
|
struct __is_same {
|
|
};
|
|
|
|
__is_same<int> isi;
|
|
|
|
// Another, similar egregious hack for __is_signed, which is a type
|
|
// trait in Embarcadero's compiler but is used as an identifier in
|
|
// libstdc++.
|
|
struct test_is_signed {
|
|
static const bool __is_signed = true;
|
|
};
|
|
|
|
bool check_signed = test_is_signed::__is_signed;
|
|
|
|
template<bool B> struct must_be_true {};
|
|
template<> struct must_be_true<false>;
|
|
|
|
void foo() {
|
|
bool b = __is_pod(int);
|
|
must_be_true<__is_pod(int)> mbt;
|
|
}
|
|
#if !__has_feature(is_pod)
|
|
# error __is_pod should still be available.
|
|
#endif
|