gcc/testsuite/gcc.dg/20020527-1.c

   1 /* PR c/6660
   2    Test whether an unnamed field with user defined type - struct or union is
   3    accepted.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-fms-extensions" } */
   6
   7 typedef struct {
   8   unsigned short a;
   9   unsigned short b;
  10 } __attribute__ ((__packed__)) A;
  11
  12 typedef struct B_ {
  13   unsigned int c;
  14   unsigned int d;
  15 } B;
  16
  17 typedef struct C_ {
  18   B;
  19   unsigned int e;
  20   unsigned int f;
  21 } C;
  22
  23 typedef C D;
  24
  25 typedef struct {
  26   A;
  27   D;
  28   struct {
  29     unsigned short g;
  30     unsigned short h;
  31   } __attribute__ ((__packed__));
  32   union {
  33     int i;
  34     long j;
  35   };
  36   int k;
  37 } __attribute__ ((__packed__)) E;
  38
  39 E x;
  40
  41 void foo (void)
  42 {
  43   x.a = 1;
  44   x.b = 2;
  45   x.c = 3;
  46   x.d = 4;
  47   x.e = 5;
  48   x.f = 6;
  49   x.g = 7;
  50   x.h = 8;
  51   x.i = 9;
  52   x.j = 10;
  53   x.k = 11;
  54 }