1  /* Test handling of lvalues of incomplete types.  Bugs 36941, 88647
       2     (invalid), 88827.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c11 -pedantic-errors" } */
       5  
       6  struct S;
       7  
       8  extern struct S var;
       9  extern struct S *vp;
      10  extern int i;
      11  
      12  void
      13  f1 (void)
      14  {
      15    var; /* { dg-error "has an incomplete type" } */
      16    var, (void) 0; /* { dg-error "has an incomplete type" } */
      17    (i
      18     ? var /* { dg-error "has an incomplete type" } */
      19     : var); /* { dg-error "has an incomplete type" } */
      20  }
      21  
      22  void
      23  f2 (void)
      24  {
      25    (void) var; /* { dg-error "has an incomplete type" } */
      26    (void) (var, (void) 0); /* { dg-error "has an incomplete type" } */
      27    (void) (i
      28  	  ? var /* { dg-error "has an incomplete type" } */
      29  	  : var); /* { dg-error "has an incomplete type" } */
      30  }
      31  
      32  void
      33  f3 (void)
      34  {
      35    (const void) var; /* { dg-error "has an incomplete type" } */
      36    (const void) (var, (void) 0); /* { dg-error "has an incomplete type" } */
      37    (const void) (i
      38  		? var /* { dg-error "has an incomplete type" } */
      39  		: var); /* { dg-error "has an incomplete type" } */
      40  }
      41  
      42  void
      43  f4 (void)
      44  {
      45    *vp; /* { dg-error "invalid use of undefined type" } */
      46    *vp, (void) 0; /* { dg-error "invalid use of undefined type" } */
      47    (i
      48     ? *vp /* { dg-error "invalid use of undefined type" } */
      49     : *vp); /* { dg-error "invalid use of undefined type" } */
      50  }
      51  
      52  void
      53  f5 (void)
      54  {
      55    (void) *vp; /* { dg-error "invalid use of undefined type" } */
      56    (void) (*vp, (void) 0); /* { dg-error "invalid use of undefined type" } */
      57    (void) (i
      58  	  ? *vp /* { dg-error "invalid use of undefined type" } */
      59  	  : *vp); /* { dg-error "invalid use of undefined type" } */
      60  }
      61  
      62  void
      63  f6 (void)
      64  {
      65    (const void) *vp; /* { dg-error "invalid use of undefined type" } */
      66    (const void) (*vp, (void) 0); /* { dg-error "invalid use of undefined type" } */
      67    (const void) (i
      68  		? *vp /* { dg-error "invalid use of undefined type" } */
      69  		: *vp); /* { dg-error "invalid use of undefined type" } */
      70  }
      71  
      72  void
      73  f7 (void)
      74  {
      75    /* This is invalid because of the constraints on [].  */
      76    &vp[0]; /* { dg-error "invalid use of undefined type" } */
      77  }