27 lines
1.6 KiB
C++
27 lines
1.6 KiB
C++
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// RUN: %clang_cc1 %s -verify
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// The reinterpret_cast operator shall not cast away constness.
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struct X {};
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struct Y {};
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void f(const int * X::* Y::* *p) {
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// This applies for similar types...
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(void)reinterpret_cast<int * X::* Y::* *>(p); // expected-error {{casts away qualifiers}}
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// ... and for cases where the base type is different ...
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(void)reinterpret_cast<float * X::* Y::* *>(p); // expected-error {{casts away qualifiers}}
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// ... and for cases where pointers to members point to members of different classes ...
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(void)reinterpret_cast<int * Y::* X::* *>(p); // expected-error {{casts away qualifiers}}
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// ... and even for cases where the path is wholly different!
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// (Though we accept such cases as an extension.)
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(void)reinterpret_cast<double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}}
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// If qualifiers are added, we need a 'const' at every level above.
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(void)reinterpret_cast<const volatile double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}}
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(void)reinterpret_cast<const volatile double Y::*const X::*const **>(p); // expected-warning {{casts away qualifiers}}
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(void)reinterpret_cast<const volatile double Y::*const X::**const *>(p); // expected-warning {{casts away qualifiers}}
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(void)reinterpret_cast<const volatile double Y::*X::*const *const *>(p); // expected-warning {{casts away qualifiers}}
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(void)reinterpret_cast<const volatile double Y::*const X::*const *const *>(p); // ok
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(void)reinterpret_cast<const double Y::*volatile X::**const *>(p); // expected-warning {{casts away qualifiers}}
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(void)reinterpret_cast<const double Y::*volatile X::*const *const *>(p); // ok
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}
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