Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/expr/composite-ptr-type.C @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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// DR 1512 // Test the composite pointer type of two operands. // { dg-do compile { target c++11 } } using nullptr_t = decltype(nullptr); template <class T, class U> struct same; template <class T> struct same<T,T> { }; template<typename T> T fn () { } // Check that the composite pointer type of T and U is RES. template<typename T, typename U, typename RES> void test () { same<decltype(true ? fn<T>() : fn<U>()), RES> s; } struct A { }; struct B : A { }; // Test [expr.type]/3. void foo () { // if both p1 and p2 are null pointer constants -> std::nullptr_t. test<nullptr_t, nullptr_t, nullptr_t>(); // if either p1 or p2 is a null pointer constant -> T2 or T1. test<nullptr_t, const char **, const char **>(); test<const char **, nullptr_t, const char **>(); // if T1 or T2 is 'pointer to cv1 void' and the other type is 'pointer // to cv2 T', where T is an object type or void -> 'pointer to cv12 void', // where cv12 is the union of cv1 and cv2. test<const int *, volatile void *, const volatile void *>(); test<const void *, volatile int *, const volatile void *>(); test<int *, const int *, const int *>(); // Make sure that we propagate 'const' here as per [conv.qual]/3.3. test<int **, const int **, const int *const *>(); test<int *volatile *, const int **, const int *const volatile *>(); test<int **, volatile int **, volatile int *const *>(); // if T1 is 'pointer to cv1 C1' and T2 is 'pointer to cv2 C2', where C1 is // reference-related to C2 or C2 is reference-related to C1 -> the cv-combined // type of T1 and T2 or the cv-combined type of T2 and T1, respectively. test<const A*, volatile B*, const volatile A *>(); test<const B*, volatile A*, const volatile A *>(); test<const int *A::*, volatile int *A::*, const volatile int *const A::*>(); // FIXME: This doesn't work if they're reference-related but not same. //test<const int *A::*, volatile int *B::*, const volatile int *const B::*>(); //test<const int *B::*, volatile int *A::*, const volatile int *const B::*>(); // if T1 or T2 is 'pointer to noexcept function' and the other type is // 'pointer to function', where the function types are otherwise the same // -> 'pointer to function'. test<int (*)() noexcept, int (*)(), int (*)()>(); test<int (*)(), int (*)() noexcept, int (*)()>(); // if T1 or T2 is 'pointer to member of C1 of type function', the other type // is 'pointer to member of C2 of type noexcept function', and C1 is // reference-related to C2 or C2 is reference-related to C1, where the // function types are otherwise the same -> 'pointer to member of C2 of type // function' or 'pointer to member of C1 of type function', respectively. test<int (A::*)() noexcept, int (A::*)(), int (A::*)()>(); test<int (A::*)(), int (A::*)() noexcept, int (A::*)()>(); }