// RUN: %clang_cc1 -fsyntax-only -std=c++2c -verify=expected,cxx26 %s // RUN: %clang_cc1 -fsyntax-only -std=c++2b -verify=expected,cxx23 %s struct S {}; struct T : S {} t; consteval void test() { // cxx23-error{{consteval function never produces a constant expression}} void* a = &t; const void* b = &t; volatile void* c = &t; (void)static_cast(a); //cxx23-note {{cast from 'void *' is not allowed in a constant expression in C++ standards before C++2c}} (void)static_cast(a); (void)static_cast(a); (void)(T*)(a); (void)(const T*)(a); (void)(volatile T*)(a); (void)static_cast(b); // expected-error {{static_cast from 'const void *' to 'T *' casts away qualifiers}} (void)static_cast(b); // expected-error {{static_cast from 'const void *' to 'volatile T *' casts away qualifiers}} (void)static_cast(b); (void)static_cast(b); (void)static_cast(c); // expected-error{{static_cast from 'volatile void *' to 'T *' casts away qualifiers}} (void)static_cast(c); (void)static_cast(b); (void)static_cast(b); } void err() { constexpr void* a = &t; constexpr auto err1 = static_cast(a); // expected-error{{constexpr variable 'err1' must be initialized by a constant expression}} \ // cxx23-note {{cast from 'void *' is not allowed in a constant expression in C++ standards before C++2c}} \ // cxx26-note {{cast from 'void *' is not allowed in a constant expression because the pointed object type 'T' is not similar to the target type 'int'}} constexpr auto err2 = static_cast(a); // expected-error{{constexpr variable 'err2' must be initialized by a constant expression}} \ // cxx23-note {{cast from 'void *' is not allowed in a constant expression in C++ standards before C++2c}} \ // cxx26-note {{cast from 'void *' is not allowed in a constant expression because the pointed object type 'T' is not similar to the target type 'S'}} }