diff options
Diffstat (limited to 'test/CXX/expr/expr.post/expr.reinterpret.cast/p2.cpp')
| -rw-r--r-- | test/CXX/expr/expr.post/expr.reinterpret.cast/p2.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/CXX/expr/expr.post/expr.reinterpret.cast/p2.cpp b/test/CXX/expr/expr.post/expr.reinterpret.cast/p2.cpp new file mode 100644 index 000000000000..b03db27ee1d0 --- /dev/null +++ b/test/CXX/expr/expr.post/expr.reinterpret.cast/p2.cpp @@ -0,0 +1,26 @@ +// RUN: %clang_cc1 %s -verify + +// The reinterpret_cast operator shall not cast away constness. +struct X {}; +struct Y {}; +void f(const int * X::* Y::* *p) { + // This applies for similar types... + (void)reinterpret_cast<int * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} + // ... and for cases where the base type is different ... + (void)reinterpret_cast<float * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} + // ... and for cases where pointers to members point to members of different classes ... + (void)reinterpret_cast<int * Y::* X::* *>(p); // expected-error {{casts away qualifiers}} + // ... and even for cases where the path is wholly different! + // (Though we accept such cases as an extension.) + (void)reinterpret_cast<double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} + + // If qualifiers are added, we need a 'const' at every level above. + (void)reinterpret_cast<const volatile double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} + (void)reinterpret_cast<const volatile double Y::*const X::*const **>(p); // expected-warning {{casts away qualifiers}} + (void)reinterpret_cast<const volatile double Y::*const X::**const *>(p); // expected-warning {{casts away qualifiers}} + (void)reinterpret_cast<const volatile double Y::*X::*const *const *>(p); // expected-warning {{casts away qualifiers}} + (void)reinterpret_cast<const volatile double Y::*const X::*const *const *>(p); // ok + + (void)reinterpret_cast<const double Y::*volatile X::**const *>(p); // expected-warning {{casts away qualifiers}} + (void)reinterpret_cast<const double Y::*volatile X::*const *const *>(p); // ok +} |