1*f276e2dcSRichard Smith // RUN: %clang_cc1 %s -verify
2*f276e2dcSRichard Smith
3*f276e2dcSRichard Smith // The reinterpret_cast operator shall not cast away constness.
4*f276e2dcSRichard Smith struct X {};
5*f276e2dcSRichard Smith struct Y {};
f(const int * X::* Y::** p)6*f276e2dcSRichard Smith void f(const int * X::* Y::* *p) {
7*f276e2dcSRichard Smith // This applies for similar types...
8*f276e2dcSRichard Smith (void)reinterpret_cast<int * X::* Y::* *>(p); // expected-error {{casts away qualifiers}}
9*f276e2dcSRichard Smith // ... and for cases where the base type is different ...
10*f276e2dcSRichard Smith (void)reinterpret_cast<float * X::* Y::* *>(p); // expected-error {{casts away qualifiers}}
11*f276e2dcSRichard Smith // ... and for cases where pointers to members point to members of different classes ...
12*f276e2dcSRichard Smith (void)reinterpret_cast<int * Y::* X::* *>(p); // expected-error {{casts away qualifiers}}
13*f276e2dcSRichard Smith // ... and even for cases where the path is wholly different!
14*f276e2dcSRichard Smith // (Though we accept such cases as an extension.)
15*f276e2dcSRichard Smith (void)reinterpret_cast<double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}}
16*f276e2dcSRichard Smith
17*f276e2dcSRichard Smith // If qualifiers are added, we need a 'const' at every level above.
18*f276e2dcSRichard Smith (void)reinterpret_cast<const volatile double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}}
19*f276e2dcSRichard Smith (void)reinterpret_cast<const volatile double Y::*const X::*const **>(p); // expected-warning {{casts away qualifiers}}
20*f276e2dcSRichard Smith (void)reinterpret_cast<const volatile double Y::*const X::**const *>(p); // expected-warning {{casts away qualifiers}}
21*f276e2dcSRichard Smith (void)reinterpret_cast<const volatile double Y::*X::*const *const *>(p); // expected-warning {{casts away qualifiers}}
22*f276e2dcSRichard Smith (void)reinterpret_cast<const volatile double Y::*const X::*const *const *>(p); // ok
23*f276e2dcSRichard Smith
24*f276e2dcSRichard Smith (void)reinterpret_cast<const double Y::*volatile X::**const *>(p); // expected-warning {{casts away qualifiers}}
25*f276e2dcSRichard Smith (void)reinterpret_cast<const double Y::*volatile X::*const *const *>(p); // ok
26*f276e2dcSRichard Smith }
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