gcc-4.9/gcc/testsuite/gcc.dg/lto/20101125-1_1.c


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struct X {
  char i;
};

struct W {
  struct U *p;
  struct X *q;
};

struct U {
  struct W a[1];
};

void bar(struct U *ptr)
{
  ptr->a[0].p = 0;
}