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// { dg-do compile { target c++11 } }
#define SA(X) static_assert((X),#X)
#define SA_TEST_FN(TRAIT, TYPE, EXPECT) \
SA(TRAIT(TYPE) == EXPECT); \
SA(TRAIT(const TYPE) == EXPECT);
#define SA_TEST_CATEGORY(TRAIT, TYPE, EXPECT) \
SA(TRAIT(TYPE) == EXPECT); \
SA(TRAIT(const TYPE) == EXPECT); \
SA(TRAIT(volatile TYPE) == EXPECT); \
SA(TRAIT(const volatile TYPE) == EXPECT)
class ClassType { };
class IncompleteClass;
// Positive tests.
SA_TEST_CATEGORY(__is_reference, int&, true);
SA_TEST_CATEGORY(__is_reference, ClassType&, true);
SA_TEST_FN(__is_reference, int(&)(int), true);
SA_TEST_CATEGORY(__is_reference, int&&, true);
SA_TEST_CATEGORY(__is_reference, ClassType&&, true);
SA_TEST_FN(__is_reference, int(&&)(int), true);
SA_TEST_CATEGORY(__is_reference, IncompleteClass&, true);
// Negative tests
SA_TEST_CATEGORY(__is_reference, void, false);
SA_TEST_CATEGORY(__is_reference, int*, false);
SA_TEST_CATEGORY(__is_reference, int[3], false);
SA_TEST_FN(__is_reference, int(int), false);
SA_TEST_FN(__is_reference, int(*const)(int), false);
SA_TEST_FN(__is_reference, int(*volatile)(int), false);
SA_TEST_FN(__is_reference, int(*const volatile)(int), false);
// Sanity check.
SA_TEST_CATEGORY(__is_reference, ClassType, false);
SA_TEST_CATEGORY(__is_reference, IncompleteClass, false);
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