gcc/testsuite/gcc.dg/Wparentheses-12.c

   1 /* PR c/70436  */
   2 /* { dg-options "-Wparentheses" }  */
   3
   4 int a, b, c;
   5 void bar (void);
   6 void baz (void);
   7
   8 void
   9 foo (void)
  10 {
  11   int i, j;
  12
  13   if (a) /* { dg-warning "ambiguous" }  */
  14     for (;;)
  15       if (b)
  16         bar ();
  17       else
  18         baz ();
  19
  20   if (a) /* { dg-warning "ambiguous" }  */
  21     while (1)
  22       if (b)
  23         bar ();
  24       else
  25         baz ();
  26
  27   if (a) /* { dg-warning "ambiguous" }  */
  28     while (1)
  29       for (;;)
  30         if (b)
  31           bar ();
  32         else
  33           baz ();
  34
  35   if (a) /* { dg-warning "ambiguous" }  */
  36     while (1)
  37       while (1)
  38         if (b)
  39           bar ();
  40   else
  41     baz ();
  42
  43   if (a) /* { dg-warning "ambiguous" }  */
  44     for (i = 0; i < 10; i++)
  45       for (j = 0; j < 10; j++)
  46         if (b)
  47           bar ();
  48   else
  49     baz ();
  50
  51   if (a)
  52     for (i = 0; i < 10; i++)
  53       if (b) /* { dg-warning "ambiguous" }  */
  54         for (j = 0; j < 10; j++)
  55           if (c)
  56             bar ();
  57       else
  58         baz ();
  59
  60   if (a) /* { dg-warning "ambiguous" }  */
  61     for (i = 0; i < 10; i++)
  62       if (b)
  63         for (j = 0; j < 10; j++)
  64           if (c)
  65             bar ();
  66           else
  67             baz ();
  68   else
  69     bar ();
  70
  71   if (a) /* { dg-warning "ambiguous" }  */
  72     for (;;)
  73       if (b)
  74         while (1)
  75           if (a)
  76             bar ();
  77           else
  78             baz ();
  79       else
  80         bar ();
  81
  82   if (a) /* { dg-warning "ambiguous" }  */
  83     for (;;)
  84       if (b)
  85         while (1)
  86           {
  87             if (a) { bar (); } else { baz (); }
  88           }
  89       else
  90         bar ();
  91
  92   if (a)
  93     for (;;)
  94       if (b)
  95         bar ();
  96       else
  97         baz ();
  98   else bar ();
  99
 100   if (a)
 101     while (1)
 102       if (b)
 103         bar ();
 104       else
 105         baz ();
 106   else bar ();
 107
 108   if (a)
 109     for (;;)
 110       {
 111         if (b)
 112           bar ();
 113         else
 114           baz ();
 115       }
 116
 117   if (a)
 118     {
 119       for (;;)
 120         if (b)
 121           bar ();
 122     }
 123   else baz ();
 124
 125   if (a)
 126     do
 127       if (b) bar (); else baz ();
 128     while (b);
 129
 130   if (a)
 131     do
 132       if (b) bar ();
 133     while (b);
 134   else baz ();
 135 }