27 lines · cpp
1// RUN: %clang_cc1 %s -verify2 3// The reinterpret_cast operator shall not cast away constness.4struct X {};5struct Y {};6void 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); // ok23 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); // ok26}27