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// { dg-do assemble  }

// { dg-do assemble  }

// g++ 1.36.1 bug 900121_05

// g++ 1.36.1 bug 900121_05

// g++ allows unions to have base types (i.e. to be "derived") and it allows

// g++ allows unions to have base types (i.e. to be "derived") and it allows

// other types to have unions as base types.  Both cases are illegal.

// other types to have unions as base types.  Both cases are illegal.

// g++ curently does not detect such errors.

// g++ curently does not detect such errors.

// Cfront 2.0 passes this test.

// Cfront 2.0 passes this test.

// keywords: unions, inheritance

// keywords: unions, inheritance

struct s0 {

struct s0 {

  int s0_member;

  int s0_member;

};

};

union u0 : public s0 {                  /* { dg-error "" } union has base class */

union u0 : public s0 {                  /* { dg-error "" } union has base class */

  int u0_member_0;

  int u0_member_0;

  int u0_member_1;

  int u0_member_1;

};

};

union u1 {

union u1 {

  int u1_member_0;

  int u1_member_0;

  int u1_member_1;

  int u1_member_1;

};

};

struct s1 : public u1 {                 /* { dg-error "base type" } */

struct s1 : public u1 {                 /* { dg-error "base type" } */

  int s1_member_0;

  int s1_member_0;

};

};

int main () { return 0; }

int main () { return 0; }