1  /* Test operation of -Wparentheses.  Warnings for ambiguous else.  */
       2  /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
       3  
       4  /* { dg-do compile } */
       5  /* { dg-options "-Wparentheses" } */
       6  
       7  int foo (int);
       8  
       9  int a, b, c;
      10  
      11  int
      12  bar (void)
      13  {
      14    if (a)
      15      foo (0);
      16    if (b)
      17      foo (1);
      18    else
      19      foo (2);
      20    if (c) /* { dg-warning "ambiguous" "correct warning" } */
      21      if (a)
      22        foo (3);
      23      else
      24        foo (4);
      25    if (a)
      26      if (c)
      27        foo (5);
      28    if (a)
      29      if (b) /* { dg-warning "ambiguous" "correct warning" } */
      30        if (c)
      31  	foo (6);
      32        else
      33  	foo (7);
      34    if (a) /* { dg-warning "ambiguous" "correct warning" } */
      35      if (b)
      36        if (c)
      37  	foo (8);
      38        else
      39  	foo (9);
      40      else
      41        foo (10);
      42    if (a)
      43      if (b)
      44        if (c)
      45  	foo (11);
      46        else
      47  	foo (12);
      48      else
      49        foo (13);
      50    else
      51      foo (14);
      52    if (a) {
      53      if (b)
      54        if (c)
      55  	foo (15);
      56        else
      57  	foo (16);
      58      else
      59        foo (17);
      60    }
      61  }