CONFORMANCE

   1 Conformance of the GNU libc with various standards
   2 ==================================================
   3
   4 The GNU libc is designed to be conformant with existing standard as
   5 far as possible.  To ensure this I've run various tests.  The results
   6 are presented here.
   7
   8
   9 Open Group's hdrchk
  10 -------------------
  11
  12 The hdrchk test suite is available from the Open Group at
  13
  14         ftp://ftp.rdg.opengroup.org/pub/unsupported/stdtools/hdrchk/
  15
  16 I've last run the suite on 1998-07-08 on a Linux/ix86 system with the
  17 following results [*]:
  18
  19         FIPS            No reported problems
  20
  21         POSIX90         No reported problems
  22
  23         XPG3            No reported problems
  24
  25         XPG4            The wide character I/O stuff is missing in glibc.
  26
  27 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  28 *** Starting wchar.h
  29 Missing: extern wint_t  fgetwc();
  30 Missing: extern wchar_t *fgetws();
  31 Missing: extern wint_t  fputwc();
  32 Missing: extern int     fputws();
  33 Missing: extern wint_t  getwc();
  34 Missing: extern wint_t  getwchar();
  35 Missing: extern wint_t  putwc();
  36 Missing: extern wchar_t putwchar();
  37 Missing: extern wint_t  ungetwc();
  38 Missing: extern size_t  wcsftime();
  39 *** Completed wchar.h
  40 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  41
  42                         Beside this a problem in stdio.h is reported but
  43                         this is only because the scripts don't understand
  44                         the sometimes complex constructs in the header.
  45
  46         POSIX96         Same as UNIX98 [see below].
  47         UNIX98          Quite a lot of problems, almost all due to limitations
  48                         of the Linux kernel (2.1.108):
  49
  50 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  51 *** Starting mqueue.h
  52 Missing #include file: mqueue.h
  53 *** Completed mqueue.h
  54 *** Starting semaphore.h
  55 Missing: #define SEM_FAILED (-1)
  56 Missing: extern int  sem_close();
  57 Missing: extern sem_t *sem_open();
  58 Missing: extern int  sem_unlink();
  59 *** Completed semaphore.h
  60 *** Starting signal.h
  61 Missing: #define        SIGSYS  (-1)
  62 *** Completed signal.h
  63 *** Starting sys/mman.h
  64 Missing: extern int shm_open();
  65 Missing: extern int shm_unlink();
  66 *** Completed sys/mman.h
  67 *** Starting sys/stat.h
  68 Missing: #define        S_TYPEISMQ      (-1)
  69 Missing: #define        S_TYPEISSEM     (-1)
  70 Missing: #define        S_TYPEISSHM     (-1)
  71 *** Completed sys/stat.h
  72 *** Starting sys/types.h
  73 Missing: typedef        <type>  clockid_t;
  74 Missing: typedef        <type>  timer_t;
  75 *** Completed sys/types.h
  76 *** Starting time.h
  77 Missing: #define        CLOCK_REALTIME  (-1)
  78 Missing: #define        TIMER_ABSTIME   (-1)
  79 Missing: extern int     clock_getres();
  80 Missing: extern int     clock_gettime();
  81 Missing: extern int     clock_settime();
  82 Missing: struct itimerspec { <members> };
  83 Missing: extern int     timer_create();
  84 Missing: extern int     timer_delete();
  85 Missing: extern int     timer_getoverrun();
  86 Missing: extern int     timer_gettime();
  87 Missing: extern int     timer_settime();
  88 *** Completed time.h
  89 *** Starting unistd.h
  90 Missing: #define        _POSIX_MESSAGE_PASSING          (-1)
  91 Missing: #define        _POSIX_SEMAPHORES               (-1)
  92 Missing: #define        _POSIX_SHARED_MEMORY_OBJECTS            (-1)
  93 Missing: #define        _POSIX_TIMERS           (-1)
  94 *** Completed unistd.h
  95 *** Starting wchar.h
  96 Missing: extern wint_t  fgetwc();
  97 Missing: extern wchar_t *fgetws();
  98 Missing: extern wint_t  fputwc();
  99 Missing: extern int     fputws();
 100 Missing: extern int     fwide();
 101 Missing: extern int     fwprintf();
 102 Missing: extern int     fwscanf();
 103 Missing: extern wint_t  getwc();
 104 Missing: extern wint_t  getwchar();
 105 Missing: extern wint_t  putwc();
 106 Missing: extern wchar_t putwchar();
 107 Missing: extern int     swprintf();
 108 Missing: extern int     swscanf();
 109 Missing: extern wint_t  ungetwc();
 110 Missing: extern int     vfwprintf();
 111 Missing: extern int     vswprintf();
 112 Missing: extern int     vwprintf();
 113 Missing: extern size_t  wcsftime();
 114 Missing: extern wchar_t *wcswcs();
 115 Missing: extern int     wprintf();
 116 Missing: extern int     wscanf();
 117 *** Completed wchar.h
 118 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 119
 120                         Only the `wchar.h' problems result from glibc
 121                         defficiencies since we still don't support wide
 122                         character I/O.
 123
 124 [*] Since the scripts are not clever enough for the way gcc handles
 125 include files (namely, putting some of them in gcc-local directory) I
 126 copied over the iso646.h, float.h, and stddef.h headers and ignored the
 127 problems resulting from the splitted limits.h file).