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/* { dg-do compile } */

/* { dg-options "-O1 -fdump-tree-dom3" } */

extern void abort (void);

struct rtx_def;

typedef struct rtx_def *rtx;

struct rtvec_def;

typedef struct rtvec_def *rtvec;

union tree_node;

typedef union tree_node *tree;

struct rtx_def

{

  int code;

  int mode;

  unsigned int in_struct:1;

};

struct tree_common

{

  int code;

};

struct tree_decl

{

  rtx rtl;

};

union tree_node

{

  struct tree_common common;

  struct tree_decl decl;

};

rtx

store_expr (exp, target, want_value)

     tree exp;

     rtx target;

     int want_value;

{

  if (exp->common.code == 42)

    abort ();

  else if (queued_subexp_p (target))

    {

      blah (target->mode);

      if (target->code)

        abort ();

    }

  else

    {

      if (target->code && (__extension__({target;})->in_struct));

    }

  if ((target != (exp->decl.rtl

                  ? (exp->decl.rtl

                     ? exp->decl.rtl

                     : (make_decl_rtl (exp, 0), exp->decl.rtl))

                  : 0))

      && expr_size (exp))

    ;

}

/* All paths to the test "target != 0" occuring in the final IF statement

   dereference target.  Thus target can not have the value zero at that

   point and the test should have been eliminated.  */

/* ??? The dominator walker (A) doesn't merge this data at joins and

   (B) only looks at immediate dominators, and only queued_subexp_p

   immediately dominates the comparison in question.  We need something

   stronger.  */

/* { dg-final { scan-tree-dump-times "target.*!= 0" 0 "dom3" { xfail *-*-* } } } */

/* { dg-final { cleanup-tree-dump "dom3" } } */