tests/tests2/33_ternary_op.c

   1 #include <assert.h>
   2 extern int printf(const char*, ...);
   3
   4 char arr[1];
   5 static void f (void){}
   6 void (*fp)(void) = f;
   7 void call_fp()
   8 {
   9     (fp?f:f)();
  10     (fp?fp:fp)();
  11     (fp?fp:&f)();
  12     (fp?&f:fp)();
  13     (fp?&f:&f)();
  14     _Generic(0?arr:arr, char*: (void)0);
  15     _Generic(0?&arr[0]:arr, char*: (void)0);
  16     _Generic(0?arr:&arr[0], char*: (void)0);
  17     _Generic(1?arr:arr, char*: (void)0);
  18     _Generic(1?&arr[0]:arr, char*: (void)0);
  19     _Generic(1?arr:&arr[0], char*: (void)0);
  20     _Generic((__typeof(1?f:f)*){0}, void (**)(void): (void)0);
  21     (fp?&f:f)();
  22     (fp?f:&f)();
  23     _Generic((__typeof(fp?0L:(void)0)*){0}, void*: (void)0);
  24
  25     /* The following line causes a warning */
  26     void *xx = fp?f:1;
  27 }
  28
  29 struct condstruct {
  30     int i;
  31 };
  32
  33 static int getme(struct condstruct* s, int i)
  34 {
  35     int i1 = (i != 0 ? 0 : s)->i;
  36     int i2 = (i == 0 ? s : 0)->i;
  37     int i3 = (i != 0 ? (void*)0 : s)->i;
  38     int i4 = (i == 0 ? s : (void*)0)->i;
  39     return i1 + i2 + i3 + i4;
  40 }
  41
  42 int main()
  43 {
  44    int Count;
  45
  46    for (Count = 0; Count < 10; Count++)
  47    {
  48       printf("%d\n", (Count < 5) ? (Count*Count) : (Count * 3));
  49    }
  50
  51    {
  52     int c = 0;
  53     #define ASSERT(X) assert(X)
  54     static struct stru { int x; } a={'A'},b={'B'};
  55     static const struct stru2 { int x; } d = { 'D' };
  56     ASSERT('A'==(*(1?&a:&b)).x);
  57     ASSERT('A'==(1?a:b).x);
  58     ASSERT('A'==(c?b:a).x);
  59     ASSERT('A'==(0?b:a).x);
  60     c=1;
  61     ASSERT('A'==(c?a:b).x);
  62     ASSERT(sizeof(int)    == sizeof(0 ? 'a' : c));
  63     ASSERT(sizeof(double) == sizeof(0 ? 'a' : 1.0));
  64     ASSERT(sizeof(double) == sizeof(0 ? 0.0 : 'a'));
  65     ASSERT(sizeof(float)  == sizeof(0 ? 'a' : 1.0f));
  66     ASSERT(sizeof(double) == sizeof(0 ? 0.0 : 1.0f));
  67     struct condstruct cs = { 38 };
  68     printf("%d\n", getme(&cs, 0));
  69
  70     // the following lines contain type mismatch errors in every ternary expression
  71     //printf("comparing double with pointer : size = %d\n", sizeof(0 ? &c : 0.0));
  72     //printf("'%c' <> '%c'\n", (0 ? a : d).x, (1 ? a : d).x);
  73     //0 ? a : 0.0;
  74    }
  75
  76
  77    return 0;
  78 }
  79
  80 /* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/