diff options
Diffstat (limited to 'test/CXX/expr')
3 files changed, 43 insertions, 2 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 +} diff --git a/test/CXX/expr/expr.prim/expr.prim.lambda/p2-template-parameter.cpp b/test/CXX/expr/expr.prim/expr.prim.lambda/p2-template-parameter.cpp new file mode 100644 index 000000000000..f120a63badcb --- /dev/null +++ b/test/CXX/expr/expr.prim/expr.prim.lambda/p2-template-parameter.cpp @@ -0,0 +1,7 @@ +// RUN: %clang_cc1 -std=c++17 %s -verify + +template<auto> struct Nothing {}; + +void pr33696() { + Nothing<[]() { return 0; }()> nothing; // expected-error{{a lambda expression cannot appear in this context}} +} diff --git a/test/CXX/expr/expr.prim/expr.prim.lambda/p3.cpp b/test/CXX/expr/expr.prim/expr.prim.lambda/p3.cpp index 80771d7a229a..db40bd5d1420 100644 --- a/test/CXX/expr/expr.prim/expr.prim.lambda/p3.cpp +++ b/test/CXX/expr/expr.prim/expr.prim.lambda/p3.cpp @@ -1,11 +1,19 @@ // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify +// RUN: %clang_cc1 -fsyntax-only -std=c++14 %s -verify +// RUN: %clang_cc1 -fsyntax-only -std=c++17 %s -verify void test_nonaggregate(int i) { auto lambda = [i]() -> void {}; // expected-note 2{{candidate constructor}} decltype(lambda) foo = { 1 }; // expected-error{{no matching constructor}} - static_assert(!__is_literal(decltype(lambda)), ""); + static_assert(__is_literal(decltype(lambda)) == (__cplusplus >= 201703L), ""); auto lambda2 = []{}; // expected-note 2{{candidate constructor}} decltype(lambda2) bar = {}; // expected-error{{no matching constructor}} - static_assert(!__is_literal(decltype(lambda2)), ""); + static_assert(__is_literal(decltype(lambda2)) == (__cplusplus >= 201703L), ""); } + +constexpr auto literal = []{}; +#if __cplusplus < 201703L +// expected-error@-2 {{constexpr variable cannot have non-literal type}} +// expected-note@-3 {{lambda closure types are non-literal types before C++17}} +#endif |