gcc/testsuite/gcc.dg/c11-anon-struct-2.c

   1 /* Test for anonymous structures and unions in C11.  Test for invalid
   2    cases.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=c11 -pedantic-errors" } */
   5
   6 typedef struct s0
   7 {
   8   int i;
   9 } s0;
  10
  11 struct s1
  12 {
  13   int a;
  14   struct s0; /* { dg-error "declaration does not declare anything" } */
  15 };
  16
  17 struct s2
  18 {
  19   int a;
  20   s0; /* { dg-error "declaration does not declare anything" } */
  21 };
  22
  23 struct s3
  24 {
  25   struct
  26   {
  27     int i;
  28   };
  29   struct
  30   {
  31     int i; /* { dg-error "duplicate member" } */
  32   };
  33 };
  34
  35 struct s4
  36 {
  37   int a;
  38   struct s
  39   {
  40     int i;
  41   }; /* { dg-error "declaration does not declare anything" } */
  42 };
  43
  44 struct s5
  45 {
  46   struct
  47   {
  48     int i;
  49   } a;
  50   int b;
  51 } x;
  52
  53 void
  54 f (void)
  55 {
  56   x.i = 0; /* { dg-error "has no member" } */
  57 }