1 /* Make sure unnamed field offsets are relative to the containing struct. */ 2 3 #include <ctf-api.h> 4 #include <stddef.h> 5 #include <stdio.h> 6 #include <stdlib.h> 7 8 #include "unnamed-field-info-ctf.c" 9 10 static void 11 verify_offsetof_matching (ctf_dict_t *fp, ctf_id_t type, const char *name, size_t offset) 12 { 13 ctf_membinfo_t mi; 14 15 if (ctf_member_info (fp, type, name, &mi) < 0) 16 goto err; 17 18 if (mi.ctm_offset != offset * 8) 19 fprintf (stderr, "field %s inconsistency: offsetof() says %zi bits, CTF says %zi\n", 20 name, offset * 8, mi.ctm_offset); 21 22 return; 23 24 err: 25 fprintf (stderr, "Cannot look up field %s: %s\n", name, 26 ctf_errmsg (ctf_errno (fp))); 27 return; 28 } 29 30 int 31 main (int argc, char *argv[]) 32 { 33 ctf_dict_t *fp; 34 ctf_archive_t *ctf; 35 ctf_id_t type; 36 int err; 37 38 if (argc != 2) 39 { 40 fprintf (stderr, "Syntax: %s PROGRAM\n", argv[0]); 41 exit(1); 42 } 43 44 if ((ctf = ctf_open (argv[1], NULL, &err)) == NULL) 45 goto open_err; 46 if ((fp = ctf_dict_open (ctf, NULL, &err)) == NULL) 47 goto open_err; 48 49 /* Dig out some structure members by name. */ 50 51 if ((type = ctf_lookup_by_name (fp, "struct A") ) == CTF_ERR) 52 goto err; 53 54 verify_offsetof_matching (fp, type, "a", offsetof (struct A, a)); 55 verify_offsetof_matching (fp, type, "b", offsetof (struct A, b)); 56 verify_offsetof_matching (fp, type, "one", offsetof (struct A, one)); 57 verify_offsetof_matching (fp, type, "two", offsetof (struct A, two)); 58 verify_offsetof_matching (fp, type, "three", offsetof (struct A, three)); 59 verify_offsetof_matching (fp, type, "four", offsetof (struct A, four)); 60 verify_offsetof_matching (fp, type, "x", offsetof (struct A, x)); 61 verify_offsetof_matching (fp, type, "y", offsetof (struct A, y)); 62 verify_offsetof_matching (fp, type, "z", offsetof (struct A, z)); 63 verify_offsetof_matching (fp, type, "aleph", offsetof (struct A, aleph)); 64 65 ctf_dict_close (fp); 66 ctf_arc_close (ctf); 67 68 printf ("Offset validation complete.\n"); 69 70 return 0; 71 72 open_err: 73 fprintf (stderr, "%s: cannot open: %s\n", argv[0], ctf_errmsg (err)); 74 return 1; 75 76 err: 77 fprintf (stderr, "Cannot look up type: %s\n", ctf_errmsg (ctf_errno (fp))); 78 return 1; 79 } 80