1  /* PR c/48552 */
       2  /* { dg-do compile } */
       3  /* { dg-options "" } */
       4  
       5  struct S;
       6  
       7  void
       8  f1 (void *x)
       9  {
      10    __asm ("" : : "r" (*x));	/* { dg-warning "dereferencing" "deref" } */
      11  }				/* { dg-error "invalid use of void expression" "void expr" { target *-*-* } .-1 } */
      12  
      13  void
      14  f2 (void *x)
      15  {
      16    __asm ("" : "=r" (*x));	/* { dg-warning "dereferencing" "deref" } */
      17  }				/* { dg-error "invalid use of void expression" "void expr" { target *-*-* } .-1 } */
      18  
      19  void
      20  f3 (void *x)
      21  {
      22    __asm ("" : : "m" (*x));	/* { dg-warning "dereferencing" } */
      23  }
      24  
      25  void
      26  f4 (void *x)
      27  {
      28    __asm ("" : "=m" (*x));	/* { dg-warning "dereferencing" } */
      29  }
      30  
      31  void
      32  f5 (void *x)
      33  {
      34    __asm ("" : : "g" (*x));	/* { dg-warning "dereferencing" "deref" } */
      35  }				/* { dg-error "invalid use of void expression" "void expr" { target *-*-* } .-1 } */
      36  
      37  void
      38  f6 (void *x)
      39  {
      40    __asm ("" : "=g" (*x));	/* { dg-warning "dereferencing" "deref" } */
      41  }				/* { dg-error "invalid use of void expression" "void expr" { target *-*-* } .-1 } */
      42  
      43  void
      44  f7 (struct S *x)
      45  {
      46    __asm ("" : : "r" (*x));	/* { dg-error "invalid use of undefined type" } */
      47  }
      48  
      49  void
      50  f8 (struct S *x)
      51  {
      52    __asm ("" : "=r" (*x));	/* { dg-error "impossible constraint in 'asm'" } */
      53    /* { dg-error "non-memory output 0 must stay in memory" "memory" { target *-*-* } .-1 } */
      54  }