1 // RUN: %clang_cc1 %s -verify 2 3 // The reinterpret_cast operator shall not cast away constness. 4 struct X {}; 5 struct Y {}; 6 void f(const int * X::* Y::* *p) { 7 // This applies for similar types... 8 (void)reinterpret_cast<int * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} 9 // ... and for cases where the base type is different ... 10 (void)reinterpret_cast<float * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} 11 // ... and for cases where pointers to members point to members of different classes ... 12 (void)reinterpret_cast<int * Y::* X::* *>(p); // expected-error {{casts away qualifiers}} 13 // ... and even for cases where the path is wholly different! 14 // (Though we accept such cases as an extension.) 15 (void)reinterpret_cast<double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} 16 17 // If qualifiers are added, we need a 'const' at every level above. 18 (void)reinterpret_cast<const volatile double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} 19 (void)reinterpret_cast<const volatile double Y::*const X::*const **>(p); // expected-warning {{casts away qualifiers}} 20 (void)reinterpret_cast<const volatile double Y::*const X::**const *>(p); // expected-warning {{casts away qualifiers}} 21 (void)reinterpret_cast<const volatile double Y::*X::*const *const *>(p); // expected-warning {{casts away qualifiers}} 22 (void)reinterpret_cast<const volatile double Y::*const X::*const *const *>(p); // ok 23 24 (void)reinterpret_cast<const double Y::*volatile X::**const *>(p); // expected-warning {{casts away qualifiers}} 25 (void)reinterpret_cast<const double Y::*volatile X::*const *const *>(p); // ok 26 } 27