clang/test/CXX/class/class.bit/p1.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++20 %s
   2
   3 // Test various bit-field member declarations.
   4 constexpr int foo() { return 1; }
   5 struct A {
   6   int a [[]] : 1;
   7   int b, [[]] : 0; // expected-error {{an attribute list cannot appear here}}
   8   int [[]] : 0; // OK, attribute applies to the type.
   9   int [[]] c : 1; // OK, attribute applies to the type.
  10   int : 2 = 1; // expected-error {{anonymous bit-field cannot have a default member initializer}}
  11   int : 0 { 1 }; // expected-error {{anonymous bit-field cannot have a default member initializer}}
  12   unsigned int : 0, d : 1 = 1;
  13   int : 1 = 12, e : 1; // expected-error {{anonymous bit-field cannot have a default member initializer}}
  14   unsigned int : 0, f : 1 = 1;
  15   unsigned int g [[]] : 1 = 1;
  16   unsigned int h [[]] : 1 {1};
  17   unsigned int i : foo() = foo();
  18   int j, [[]] k; // expected-error {{an attribute list cannot appear here}}
  19 };