gcc/testsuite/gcc.dg/c99-complit-1.c

   1 /* Test for compound literals: in C99 only.  Test for valid uses.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do run } */
   4 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
   5
   6 extern void abort (void);
   7 extern void exit (int);
   8
   9 struct s { int a; int b; };
  10 union u { int c; int d; };
  11
  12 int *i0a = &(int) { 0 };
  13 int *i0b = &(int) { 0 };
  14 int *i1a = &(int) { 1 };
  15 int *i1b = &(int) { 1 };
  16 const int *i0c = &(const int) { 0 };
  17
  18 struct s *s0 = &(struct s) { 1, 2 };
  19 struct s *s1 = &(struct s) { 1, 2 };
  20 const struct s *s2 = &(const struct s) { 1, 2 };
  21
  22 union u *u0 = &(union u) { 3 };
  23 union u *u1 = &(union u) { 3 };
  24 const union u *u2 = &(const union u) { 3 };
  25
  26 int *a0 = (int []) { 1, 2, 3 };
  27 const int *a1 = (const int []) { 1, 2, 3 };
  28
  29 char *p = (char []){ "foo" };
  30
  31 int
  32 main (void)
  33 {
  34   if (i0a == i0b || i0a == i0c || i0b == i0c)
  35     abort ();
  36   if (i1a == i1b)
  37     abort ();
  38   if (*i0a != 0 || *i0b != 0 || *i1a != 1 || *i1b != 1 || *i0c != 0)
  39     abort ();
  40   *i0a = 1;
  41   *i1a = 0;
  42   if (*i0a != 1 || *i0b != 0 || *i1a != 0 || *i1b != 1 || *i0c != 0)
  43     abort ();
  44   if (s0 == s1 || s1 == s2 || s2 == s0)
  45     abort ();
  46   if (s0->a != 1 || s0->b != 2 || s1->a != 1 || s1->b != 2
  47       || s2->a != 1 || s2->b != 2)
  48     abort ();
  49   s0->a = 2;
  50   s1->b = 1;
  51   if (s0->a != 2 || s0->b != 2 || s1->a != 1 || s1->b != 1
  52       || s2->a != 1 || s2->b != 2)
  53     abort ();
  54   if (u0 == u1 || u1 == u2 || u2 == u0)
  55     abort ();
  56   if (u0->c != 3 || u1->c != 3 || u2->c != 3)
  57     abort ();
  58   u0->d = 2;
  59   if (u0->d != 2 || u1->c != 3 || u2->c != 3)
  60     abort ();
  61   if (a0 == a1)
  62     abort ();
  63   if (a0[0] != 1 || a0[1] != 2 || a0[2] != 3
  64       || a1[0] != 1 || a1[1] != 2 || a1[2] != 3)
  65     abort ();
  66   a0[0] = 3;
  67   if (a0[0] != 3 || a0[1] != 2 || a0[2] != 3
  68       || a1[0] != 1 || a1[1] != 2 || a1[2] != 3)
  69     abort ();
  70   if (p[0] != 'f' || p[1] != 'o' || p[2] != 'o' || p[3] != 0)
  71     abort ();
  72   p[0] = 'g';
  73   if (p[0] != 'g' || p[1] != 'o' || p[2] != 'o' || p[3] != 0)
  74     abort ();
  75   if (sizeof((int []) { 1, 2 ,3 }) != 3 * sizeof(int))
  76     abort ();
  77   if (sizeof((int []) { [3] = 4 }) != 4 * sizeof(int))
  78     abort ();
  79   struct s *y;
  80   for (int i = 0; i < 3; i++) {
  81     struct s *x = &(struct s) { 1, i };
  82     if (x->a != 1 || x->b != i)
  83       abort ();
  84     x->a++;
  85     x->b--;
  86     if (x->a != 2 || x->b != i - 1)
  87       abort ();
  88     if (i && y != x)
  89       abort ();
  90     y = x;
  91   }
  92   int *z;
  93   for (int i = 0; i < 4; i++) {
  94     int *x = (int []){ 0, i, i + 2, i - 3 };
  95     if (x[0] != 0 || x[1] != i || x[2] != i + 2 || x[3] != i - 3)
  96       abort ();
  97     x[0] = x[1];
  98     x[1] *= x[2];
  99     x[2] -= x[3];
 100     x[3] += 7;
 101     if (x[0] != i || x[1] != i * (i + 2) || x[2] != 5 || x[3] != i + 4)
 102       abort ();
 103     if (i && z != x)
 104       abort ();
 105     z = x;
 106   }
 107   (int) { 0 } = 1;
 108   (struct s) { 0, 1 }.a = 3;
 109   (union u) { 3 }.c = 4;
 110   (int []){ 1, 2 }[0] = 0;
 111   exit (0);
 112 }