gcc/testsuite/objc.dg/encode-4.m

   1 /* Encoding tests for ObjC class layouts.  */
   2 /* Contributed by Ziemowit Laski <zlaski@apple.com>.  */
   3 /* { dg-options "-lobjc" } */
   4 /* { dg-do run } */
   5
   6 #include <objc/Object.h>
   7 #ifdef __NEXT_RUNTIME__
   8 #include <objc/objc-class.h>
   9 #define OBJC_GETCLASS objc_getClass
  10 #else
  11 #include <objc/objc-api.h>
  12 #define OBJC_GETCLASS objc_get_class
  13 #endif
  14
  15 extern void abort(void);
  16 extern int strcmp(const char *s1, const char *s2);
  17 #define CHECK_IF(expr) if(!(expr)) abort()
  18
  19 @class Int1, Int2;
  20 struct Nested;
  21
  22 struct Innermost {
  23   unsigned char a, b;
  24   struct Nested *encl;
  25 };
  26
  27 struct Nested {
  28   float a, b;
  29   Int1 *next;
  30   struct Innermost innermost;
  31 };
  32
  33 @interface Int1: Object {
  34   signed char a, b;
  35   Int2 *int2;
  36   struct Nested nested;
  37 }
  38 @end
  39
  40 @interface Int2: Int1 {
  41   struct Innermost *innermost;
  42   Int1 *base;
  43 }
  44 @end
  45
  46 @implementation Int1
  47 @end
  48
  49 @implementation Int2
  50 @end
  51
  52 struct objc_ivar *ivar;
  53
  54 static void check_ivar(const char *name, const char *type) {
  55   CHECK_IF(!strcmp(ivar->ivar_name, name));
  56   CHECK_IF(!strcmp(ivar->ivar_type, type));
  57   ivar++;
  58 }
  59
  60 int main(void) {
  61   ivar = ((Class)OBJC_GETCLASS("Int1"))->ivars->ivar_list;
  62   check_ivar("a", "c");
  63   check_ivar("b", "c");
  64   check_ivar("int2", "@\"Int2\"");
  65   check_ivar("nested",
  66     "{Nested=\"a\"f\"b\"f\"next\"@\"Int1\"\"innermost\"{Innermost=\"a\"C\"b\"C\"encl\"^{Nested}}}");
  67
  68   ivar = ((Class)OBJC_GETCLASS("Int2"))->ivars->ivar_list;
  69   check_ivar("innermost", "^{Innermost=CC^{Nested}}");
  70   check_ivar("base", "@\"Int1\"");
  71
  72   return 0;
  73 }