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// PR c++/13371

// Bug: We were failing to properly protect the lhs on the line marked

// "here" from multiple evaluation.

// { dg-do run }

extern "C" int printf (const char *, ...);

enum E { E1, E2 };

struct A

{

  E e : 8;

  unsigned char c;

};

A ar[2];

int c;

int f()

{

  ++c;

  printf ("f()\n");

  return 0;

}

int main()

{

  ar[0].c = 0xff;

  ar[f()].e = E1;               // here

  return (c != 1 || ar[0].c != 0xff);

}