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/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-vrp1" } */

extern void abort (void);

union tree_node;

typedef union tree_node *tree;

struct tree_common

{

  int code;

};

struct tree_list

{

  tree purpose;

};

union tree_node

{

  struct tree_common common;

  struct tree_list list;

};

void

simplify_condition (cond_p)

     tree *cond_p;

{

  tree decl;

  tree cond = *cond_p;

  if (cond->common.code != 42)

    abort ();

  decl = cond->list.purpose;

  if (cond->common.code != 42)

    abort ();

  c_simplify_stmt (&decl);

}

/* There should be exactly one IF conditional.  */

/* { dg-final { scan-tree-dump-times "if " 1 "vrp1" } } */

/* { dg-final { cleanup-tree-dump "vrp1" } } */