gcc/testsuite/gcc.dg/anon-struct-9.c

   1 /* Test for diagnostics for duplicate member names in anonymous
   2    structures and unions.  PR 4784.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "" } */
   5
   6 struct s1
   7 {
   8   int x;
   9   struct
  10   {
  11     int x; /* { dg-error "duplicate member" } */
  12   };
  13 };
  14
  15 struct s2
  16 {
  17   struct
  18   {
  19     int a;
  20     struct
  21     {
  22       int b;
  23     };
  24   };
  25   struct
  26   {
  27     int b; /* { dg-error "duplicate member" } */
  28   };
  29 };
  30
  31 struct s3
  32 {
  33   struct
  34   {
  35     int a;
  36     struct
  37     {
  38       int b;
  39     };
  40   };
  41   struct
  42   {
  43     int b; /* { dg-error "duplicate member" } */
  44     int c;
  45   };
  46 };
  47
  48 struct s4
  49 {
  50   int x;
  51   struct
  52   {
  53     int x;
  54   } y;
  55 };
  56
  57 union u1
  58 {
  59   int x;
  60   union
  61   {
  62     int x; /* { dg-error "duplicate member" } */
  63   };
  64 };
  65
  66 union u2
  67 {
  68   union
  69   {
  70     int a;
  71     union
  72     {
  73       int b;
  74     };
  75   };
  76   union
  77   {
  78     int b; /* { dg-error "duplicate member" } */
  79   };
  80 };
  81
  82 union u3
  83 {
  84   union
  85   {
  86     int a;
  87     union
  88     {
  89       int b;
  90     };
  91   };
  92   union
  93   {
  94     int b; /* { dg-error "duplicate member" } */
  95     int c;
  96   };
  97 };
  98
  99 union u4
 100 {
 101   int x;
 102   union
 103   {
 104     int x;
 105   } y;
 106 };
 107
 108 #define D10(x) int x##0; int x##1; int x##2; int x##3; int x##4; int x##5; int x##6; int x##7; int x##8; int x##9;
 109 #define D100(x) D10(x##0) D10(x##1) D10(x##2) D10(x##3) D10(x##4) D10(x##5) D10(x##6) D10(x##7) D10(x##8) D10(x##9)
 110
 111 #define S10(x) struct { D100(x##0) }; struct { D100(x##1) }; struct { D100(x##2) }; struct { D100(x##3) }; struct { D100(x##4) }; struct { D100(x##5) }; struct { D100(x##6) }; struct { D100(x##7) }; struct { D100(x##8) }; struct { D100(x##9) };
 112
 113 struct sbig
 114 {
 115   S10(a)
 116   S10(b)
 117   S10(c)
 118   S10(d)
 119   S10(e)
 120   S10(f)
 121   S10(g)
 122   S10(h)
 123   S10(j)
 124   S10(k)
 125   struct
 126   {
 127     int a123; /* { dg-error "duplicate member" } */
 128   };
 129 };