// RUN: %clang_cc1 -std=c++98 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++11 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++14 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++17 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++20 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++23 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
// RUN: %clang_cc1 -std=c++2c -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s


namespace cwg3005 { // cwg3005: 21

void f(
    int _, // #cwg3005-first-param
    int _)
    // expected-error@-1 {{redefinition of parameter '_'}}
    //   expected-note@#cwg3005-first-param {{previous declaration is here}}
{
    int _;
    // expected-error@-1 {{redefinition of '_'}}
    //   expected-note@#cwg3005-first-param {{previous definition is here}}
}

} // namespace cwg3005

namespace cwg3035 { // cwg3035: no
#if __cplusplus >= 201103L
static union {
  int x = [] { return 42; }();
  // FIXME-error@-1 {{lambda expressions are not allowed in anonymous unions}}
};
#endif
} // namespace cwg3035

// cwg3058: na