gcc/testsuite/gcc.dg/anon-struct-12.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fplan9-extensions" } */
   3
   4 /* When using -fplan9-extensions, we support automatic conversion of
   5    pointer types, and we support referring to a typedef name
   6    directly.  */
   7
   8 extern void exit (int);
   9 extern void abort (void);
  10
  11 struct A { char a; };
  12
  13 struct B {
  14   char b;
  15   struct A;
  16   char c;
  17 };
  18
  19 void
  20 f1 (struct A *p)
  21 {
  22   p->a = 1;
  23 }
  24
  25 void
  26 test1 (void)
  27 {
  28   struct B b;
  29   struct A *p;
  30
  31   b.b = 2;
  32   b.c = 3;
  33   f1 (&b);
  34   if (b.a != 1)
  35     abort ();
  36   if (b.b != 2 || b.c != 3)
  37     abort ();
  38   p = &b;
  39   if (p->a != 1)
  40     abort ();
  41 }
  42
  43 typedef struct { char d; } D;
  44
  45 struct E {
  46   char b;
  47   struct F { char f; };
  48   char c;
  49   union {
  50     D;
  51   };
  52   char e;
  53 };
  54
  55 void
  56 f2 (struct F *p)
  57 {
  58   p->f = 6;
  59 }
  60
  61 void
  62 f3 (D *p)
  63 {
  64   p->d = 4;
  65 }
  66
  67 void
  68 f4 (D d)
  69 {
  70 }
  71
  72 void
  73 test2 (void)
  74 {
  75   struct E e;
  76   struct F *pf;
  77   D *pd;
  78   D d;
  79
  80   e.b = 2;
  81   e.c = 3;
  82   e.e = 5;
  83   f2 (&e);
  84   f3 (&e);
  85   if (e.d != 4)
  86     abort ();
  87   if (e.f != 6)
  88     abort ();
  89   if (e.b != 2 || e.c != 3 || e.e != 5)
  90     abort ();
  91   pf = &e;
  92   if (pf->f != 6)
  93     abort ();
  94   pd = &e;
  95   if (pd->d != 4)
  96     abort ();
  97   d = e.D;
  98   f3 (&e.D);
  99   f4 (e.D);
 100 }
 101
 102 int
 103 main ()
 104 {
 105   test1 ();
 106   test2 ();
 107   exit (0);
 108 }