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// { dg-do run }

// { dg-options "-ansi -pedantic-errors -funsigned-bitfields" }

// Copyright (C) 2001 Free Software Foundation, Inc.

// Contributed by Nathan Sidwell 15 Dec 2001 

typedef int Int;

typedef signed int SInt;

typedef unsigned int UInt;

struct A

{

  SInt bitS : 1;        // signed

  UInt bitU : 1;        // unsigned

  Int bit : 1;          // signedness by -f{signed,unsigned}-bitfields

};

int main ()

{

  A a;

  a.bitS = 1; // { dg-warning "overflow" }

  a.bitU = 1;

  a.bit = 1;

  if (a.bitS != -1)

    return 1;

  if (a.bitU != 1)

    return 2;

  if (a.bit != 1)

    return 3;

  return 0;

}