| #ifndef __NEXT_RUNTIME__ |
| #include <objc/encoding.h> |
| #endif |
| #include "next_mapping.h" |
| /* APPLE LOCAL radar 4894756 */ |
| #if OBJC_API_VERSION < 2 |
| |
| void print_ivars (Class class) |
| { |
| struct objc_ivar_list* ivars = class->ivars; |
| int i; |
| |
| for (i = 0; i < ivars->ivar_count; i++) { |
| struct objc_ivar *ivar = &(ivars->ivar_list[i]); |
| printf ("ivar '%s', type '%s', offset %d\n", |
| ivar->ivar_name, ivar->ivar_type, ivar->ivar_offset); |
| } |
| } |
| |
| void compare_structures (Class class, const char* type) |
| { |
| struct objc_struct_layout layout; |
| struct objc_ivar_list* ivars = class->ivars; |
| int i = 0; |
| int position; |
| |
| objc_layout_structure (type, &layout); |
| |
| while (objc_layout_structure_next_member (&layout)) |
| { |
| struct objc_ivar *ivar; |
| const char *ivar_type; |
| |
| if (i > ivars->ivar_count) |
| { |
| printf ("too many ivars in type %s, layout = %s\n", |
| type, layout.type); |
| exit (1); |
| } |
| |
| ivar = &(ivars->ivar_list[i]); |
| objc_layout_structure_get_info (&layout, &position, NULL, &ivar_type); |
| printf ("real ivar '%s' offset %d\n", |
| ivar->ivar_name, ivar->ivar_offset); |
| printf ("computed type '%s' offset %d\n", ivar_type, position); |
| if (position != ivar->ivar_offset) |
| { |
| printf ("offset %d and computed position %d don't match on ivar '%s'" |
| " (i = %d)\n", |
| ivar->ivar_offset, position, ivar->ivar_name, i); |
| exit (1); |
| } |
| i++; |
| } |
| |
| printf ("%d ivars checked\n", i); |
| } |
| |
| /* APPLE LOCAL radar 4894756 */ |
| #endif |
| int main () |
| { |
| /* APPLE LOCAL radar 4894756 */ |
| #if OBJC_API_VERSION < 2 |
| struct class_vars |
| { |
| @defs (MyObject); |
| }; |
| int size1, size2; |
| Class class = objc_get_class ("MyObject"); |
| |
| printf ("type = %s\n", @encode (struct class_vars)); |
| print_ivars (class); |
| |
| compare_structures (class, @encode(struct class_vars)); |
| if ((size1 = objc_sizeof_type (@encode(struct class_vars))) |
| != (size2 = sizeof (struct class_vars))) |
| { |
| printf ("sizes don't match (computed %d, exact %d)\n", size1, size2); |
| abort (); |
| } |
| /* APPLE LOCAL radar 4894756 */ |
| #endif |
| exit (0); |
| } |