/* Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <ctype.h>

#include <fnmatch.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <signal.h>

#include <sys/wait.h>

#define HEADER_MAX          256

static char macrofile[] = "/tmp/annexc.XXXXXX";

/* <aio.h>.  */

static const char *const aio_syms[] =

{

  "AIO_ALLDONE", "AIO_CANCELED", "AIO_NOTCANCELED", "LIO_NOP", "LIO_NOWAIT",

  "LIO_READ", "LIO_WAIT", "LIO_WRITE",

  /* From <fcntl.h>.  */

  "FD_CLOEXEC", "F_DUPFD", "F_GETFD", "F_GETFL", "F_GETLK", "F_RDLCK",

  "F_SETFD", "F_SETFL", "F_SETLK", "F_SETLKW", "F_UNLCK", "F_WRLCK",

  "O_ACCMODE", "O_APPEND", "O_CREAT", "O_DSYNC", "O_EXCL", "O_NOCTTY",

  "O_NONBLOCK", "O_RDONLY", "O_RDWR", "O_RSYNC", "O_SYNC", "O_TRUNC",

  "O_WRONLY",

  /* From <signal.h>.  */

  "SA_NOCLDSTOP", "SA_SIGINFO", "SIGABRT", "SIGALRM", "SIGBUS", "SIGCHLD",

  "SIGCONT", "SIGEV_NONE", "SIGEV_SIGNAL", "SIGEV_SIGNAL", "SIGEV_THREAD",

  "SIGFPE", "SIGHUP", "SIGILL", "SIGINT", "SIGKILL", "SIGPIPE", "SIGQUIT",

  "SIGRTMAX", "SIGRTMIN", "SIGSEGV", "SIGSTOP", "SIGTERM", "SIGTSTP",

  "SIGTTIN", "SIGTTOU", "SIGUSR1", "SIGUSR2", "SIG_BLOCK", "SIG_DFL",

  "SIG_ERR", "SIG_IGN", "SIG_SETMASK", "SIG_UNBLOCK", "SI_ASYNCIO",

  "SI_MESGQ", "SI_QUEUE", "SI_TIMER", "SI_USER"

};

static const char *const aio_maybe[] =

{

  "aio_cancel", "aio_error", "aio_fsync", "aio_read", "aio_return",

  "aio_suspend", "aio_write", "lio_listio",

  /* From <fcntl.h>.  */

  "creat", "fcntl", "open", "SEEK_CUR", "SEEK_END", "SEEK_SET", "S_IRGRP",

  "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU", "S_ISBLK",

  "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG", "S_ISUID",

  "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH", "S_IXUSR",

  /* From <signal.h>.  */

  "kill", "raise", "sigaction", "sigaddset", "sigdelset", "sigemptyset",

  "sigfillset", "sigismember", "signal", "sigpending", "sigprocmask",

  "sigqueue", "sigsuspend", "sigtimedwait", "sigwait", "sigwaitinfo"

};

/* <assert.h>.  */

static const char *const assert_syms[] =

{

  "assert"

};

static const char *const assert_maybe[] =

{

};

/* <ctype.h>.   */

static const char *const ctype_syms[] =

{

};

static const char *const ctype_maybe[] =

{

  "isalnum", "isalpha", "iscntrl", "isdigit", "isgraph", "islower",

  "isprint", "ispunct", "isspace", "isupper", "isxdigit", "tolower",

  "toupper"

};

/* <dirent.h>.  */

static const char *const dirent_syms[] =

{

};

static const char *const dirent_maybe[] =

{

  "closedir", "opendir", "readdir", "readdir_r", "rewinddir"

};

/* <errno.h>.  */

static const char *const errno_syms[] =

{

  "E2BIG", "EACCES", "EAGAIN", "EBADF", "EBADMSG", "EBUSY", "ECANCELED",

  "ECHILD", "EDEADLK", "EDOM", "EEXIST", "EFAULT", "EFBIG", "EINPROGRESS",

  "EINTR", "EINVAL", "EIO", "EISDIR", "EMFILE", "EMLINK", "EMSGSIZE",

  "ENAMETOOLONG", "ENFILE", "ENODEV", "ENOENT", "ENOEXEC", "ENOLCK",

  "ENOMEM", "ENOSPC", "ENOSYS", "ENOTDIR", "ENOTEMPTY", "ENOTSUP",

  "ENOTTY", "ENXIO", "EPERM", "EPIPE", "ERANGE", "EROFS", "ESPIPE",

  "ESRCH", "ETIMEDOUT", "EXDEV"

};

static const char *const errno_maybe[] =

{

  "errno", "E*"

};

/* <fcntl.h>.  */

static const char *const fcntl_syms[] =

{

  "FD_CLOEXEC", "F_DUPFD", "F_GETFD", "F_GETFL", "F_GETLK", "F_RDLCK",

  "F_SETFD", "F_SETFL", "F_SETLK", "F_SETLKW", "F_UNLCK", "F_WRLCK",

  "O_ACCMODE", "O_APPEND", "O_CREAT", "O_DSYNC", "O_EXCL", "O_NOCTTY",

  "O_NONBLOCK", "O_RDONLY", "O_RDWR", "O_RSYNC", "O_SYNC", "O_TRUNC",

  "O_WRONLY"

};

static const char *const fcntl_maybe[] =

{

  "creat", "fcntl", "open", "SEEK_CUR", "SEEK_END", "SEEK_SET", "S_IRGRP",

  "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU", "S_ISBLK",

  "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG", "S_ISUID",

  "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH", "S_IXUSR"

};

/* <float.h>.  */

static const char *const float_syms[] =

{

  "DBL_DIG", "DBL_EPSILON", "DBL_MANT_DIG", "DBL_MAX", "DBL_MAX_10_EXP",

  "DBL_MAX_EXP", "DBL_MIN", "DBL_MIN_10_EXP", "DBL_MIN_EXP", "FLT_DIG",

  "FLT_EPSILON", "FLT_MANT_DIG", "FLT_MAX", "FLT_MAX_10_EXP", "FLT_MAX_EXP",

  "FLT_MIN", "FLT_MIN_10_EXP", "FLT_MIN_EXP", "FLT_RADIX", "FLT_ROUNDS",

  "LDBL_DIG", "LDBL_EPSILON", "LDBL_MANT_DIG", "LDBL_MAX", "LDBL_MAX_10_EXP",

  "LDBL_MAX_EXP", "LDBL_MIN", "LDBL_MIN_10_EXP", "LDBL_MIN_EXP"

};

static const char *const float_maybe[] =

{

};

/* <grp.h>.  */

static const char *const grp_syms[] =

{

};

static const char *const grp_maybe[] =

{

  "getgrgid", "getgrgid_r", "getgrnam", "getgrnam_r"

};

/* <limits.h>.  */

static const char *const limits_syms[] =

{

  "_POSIX_AIO_LISTIO_MAX", "_POSIX_AIO_MAX", "_POSIX_ARG_MAX",

  "_POSIX_CHILD_MAX", "_POSIX_CLOCKRES_MAX", "_POSIX_DELAYTIMER_MAX",

  "_POSIX_LINK_MAX", "_POSIX_LOGIN_NAME_MAX", "_POSIX_MAX_CANON",

  "_POSIX_MAX_INPUT", "_POSIX_MQ_OPEN_MAX", "_POSIX_MQ_PRIO_MAX",

  "_POSIX_NAME_MAX", "_POSIX_NGROUPS_MAX", "_POSIX_OPEN_MAX",

  "_POSIX_PATH_MAX", "_POSIX_PIPE_BUF", "_POSIX_RTSIG_MAX",

  "_POSIX_SEM_NSEMS_MAX", "_POSIX_SEM_VALUE_MAX", "_POSIX_SIGQUEUE_MAX",

  "_POSIX_SSIZE_MAX", "_POSIX_STREAM_MAX",

  "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", "_POSIX_THREAD_KEYS_MAX",

  "_POSIX_THREAD_THREADS_MAX", "_POSIX_TIMER_MAX", "_POSIX_TTY_NAME_MAX",

  "_POSIX_TZNAME_MAX", "_POSIX_THREAD_DESTRUCTOR_ITERATIONS",

  "CHAR_BIT", "CHAR_MAX", "CHAR_MIN", "INT_MAX", "INT_MIN", "LONG_MAX",

  "LONG_MIN", "MB_LEN_MAX", "NGROUPS_MAX", "PAGESIZE", "SCHAR_MAX",

  "SCHAR_MIN", "SHRT_MAX", "SHRT_MIN", "UCHAR_MAX", "UINT_MAX",

  "ULONG_MAX", "USHRT_MAX"

};

static const char *const limits_maybe[] =

{

  "AIO_LISTIO_MAX", "AIO_MAX", "ARG_MAX", "CHILD_MAX", "DELAYTIMER_MAX",

  "LINK_MAX", "LOGIN_NAME_MAX", "LONG_MAX", "LONG_MIN", "MAX_CANON",

  "MAX_INPUT", "MQ_OPEN_MAX", "MQ_PRIO_MAX", "NAME_MAX", "OPEN_MAX",

  "PATH_MAX", "PIPE_BUF", "RTSIG_MAX", "PTHREAD_DESTRUCTOR_ITERATIONS",

  "PTHREAD_KEYS_MAX", "PTHREAD_STACK_MIN", "PTHREAD_THREADS_MAX"

};

/* <locale.h>.  */

static const char *const locale_syms[] =

{

  "LC_ALL", "LC_COLLATE", "LC_CTYPE", "LC_MONETARY", "LC_NUMERIC",

  "LC_TIME", "NULL"

};

static const char *const locale_maybe[] =

{

  "LC_*", "localeconv", "setlocale"

};

/* <math.h>.  */

static const char *const math_syms[] =

{

  "HUGE_VAL"

};

static const char *const math_maybe[] =

{

  "acos", "asin", "atan2", "atan", "ceil", "cos", "cosh", "exp",

  "fabs", "floor", "fmod", "frexp", "ldexp", "log10", "log", "modf",

  "pow", "sin", "sinh", "sqrt", "tan", "tanh",

  "acosf", "asinf", "atan2f", "atanf", "ceilf", "cosf", "coshf", "expf",

  "fabsf", "floorf", "fmodf", "frexpf", "ldexpf", "log10f", "logf", "modff",

  "powf", "sinf", "sinhf", "sqrtf", "tanf", "tanhf",

  "acosl", "asinl", "atan2l", "atanl", "ceill", "cosl", "coshl", "expl",

  "fabsl", "floorl", "fmodl", "frexpl", "ldexpl", "log10l", "logl", "modfl",

  "powl", "sinl", "sinhl", "sqrtl", "tanl", "tanhl"

};

/* <mqueue.h>.  */

static const char *const mqueue_syms[] =

{

};

static const char *const mqueue_maybe[] =

{

  "mq_close", "mq_getattr", "mq_notify", "mq_open", "mq_receive",

  "mq_send", "mq_setattr", "mq_unlink"

};

/* <pthread.h>.  */

static const char *const pthread_syms[] =

{

  "PTHREAD_CANCELED", "PTHREAD_CANCEL_ASYNCHRONOUS",

  "PTHREAD_CANCEL_DEFERRED", "PTHREAD_CANCEL_DISABLE", "PTHREAD_CANCEL_ENABLE",

  "PTHREAD_COND_INITIALIZER", "PTHREAD_CREATE_DETACHED",

  "PTHREAD_CREATE_JOINABLE", "PTHREAD_EXPLICIT_SCHED",

  "PTHREAD_INHERIT_SCHED", "PTHREAD_MUTEX_INITIALIZER",

  "PTHREAD_ONCE_INIT", "PTHREAD_PRIO_INHERIT", "PTHREAD_PRIO_NONE",

  "PTHREAD_PRIO_PROTECT", "PTHREAD_PROCESS_PRIVATE",

  "PTHREAD_PROCESS_SHARED", "PTHREAD_SCOPE_PROCESS", "PTHREAD_SCOPE_SYSTEM",

  /* These come from <sched.h>.  */

  "SCHED_FIFO", "SCHED_OTHER", "SCHED_RR",

  /* These come from <time.h>.  */

  "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"

};

static const char *const pthread_maybe[] =

{

  "pthread_atfork", "pthread_attr_destroy", "pthread_attr_getdetachstate",

  "pthread_attr_getinheritsched", "pthread_attr_getschedparam",

  "pthread_attr_getschedpolicy", "pthread_attr_getscope",

  "pthread_attr_getstackaddr", "pthread_attr_getstacksize",

  "pthread_attr_init", "pthread_attr_setdetachstate",

  "pthread_attr_setinheritsched", "pthread_attr_setschedparam",

  "pthread_attr_setschedpolicy", "pthread_attr_setscope",

  "pthread_attr_setstackaddr", "pthread_attr_setstacksize",

  "pthread_cleanup_pop", "pthread_cleanup_push", "pthread_cond_broadcast",

  "pthread_cond_destroy", "pthread_cond_init", "pthread_cond_signal",

  "pthread_cond_timedwait", "pthread_cond_wait", "pthread_condattr_destroy",

  "pthread_condattr_getpshared", "pthread_condattr_init",

  "pthread_condattr_setpshared", "pthread_create", "pthread_detach",

  "pthread_equal", "pthread_exit", "pthread_getspecific", "pthread_join",

  "pthread_key_create", "pthread_key_destroy", "pthread_kill",

  "pthread_mutex_destroy", "pthread_mutex_getprioceiling",

  "pthread_mutex_init", "pthread_mutex_lock", "pthread_mutex_setprioceiling",

  "pthread_mutex_trylock", "pthread_mutex_unlock", "pthread_mutexattr_destroy",

  "pthread_mutexattr_getprioceiling", "pthread_mutexattr_getprotocol",

  "pthread_mutexattr_getpshared", "pthread_mutexattr_init",

  "pthread_mutexattr_setprioceiling", "pthread_mutexattr_setprotocol",

  "pthread_mutexattr_setpshared", "pthread_once", "pthread_self",

  "pthread_setcancelstate", "pthread_setcanceltype", "pthread_setspecific",

  "pthread_sigmask", "pthread_testcancel"

  /* These come from <sched.h>.  */

  "sched_get_priority_max", "sched_get_priority_min",

  "sched_get_rr_interval", "sched_getparam", "sched_getscheduler",

  "sched_setparam", "sched_setscheduler", "sched_yield",

  /* These come from <time.h>.  */

  "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",

  "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",

  "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",

  "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",

  "timer_settime", "tzset"

};

/* <pwd.h>.  */

static const char *const pwd_syms[] =

{

};

static const char *const pwd_maybe[] =

{

  "getpwnam", "getpwnam_r", "getpwuid", "getpwuid_r"

};

/* <sched.h>.  */

static const char *const sched_syms[] =

{

  "SCHED_FIFO", "SCHED_OTHER", "SCHED_RR",

};

static const char *const sched_maybe[] =

{

  "sched_get_priority_max", "sched_get_priority_min",

  "sched_get_rr_interval", "sched_getparam", "sched_getscheduler",

  "sched_setparam", "sched_setscheduler", "sched_yield",

  /* These come from <time.h>.  */

  "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"

  "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",

  "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",

  "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",

  "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",

  "timer_settime", "tzset"

};

/* <semaphore.h>.  */

static const char *const semaphore_syms[] =

{

};

static const char *const semaphore_maybe[] =

{

  "sem_close", "sem_destroy", "sem_getvalue", "sem_init", "sem_open",

  "sen_post", "sem_trywait", "sem_unlink", "sem_wait"

};

/* <setjmp.h>.  */

static const char *const setjmp_syms[] =

{

};

static const char *const setjmp_maybe[] =

{

  "longjmp", "setjmp", "siglongjmp", "sigsetjmp"

};

/* <signal.h>.  */

static const char *const signal_syms[] =

{

  "SA_NOCLDSTOP", "SA_SIGINFO", "SIGABRT", "SIGALRM", "SIGBUS", "SIGCHLD",

  "SIGCONT", "SIGEV_NONE", "SIGEV_SIGNAL", "SIGEV_THREAD",

  "SIGFPE", "SIGHUP", "SIGILL", "SIGINT", "SIGKILL", "SIGPIPE", "SIGQUIT",

  "SIGRTMAX", "SIGRTMIN", "SIGSEGV", "SIGSTOP", "SIGTERM", "SIGTSTP",

  "SIGTTIN", "SIGTTOU", "SIGUSR1", "SIGUSR2", "SIG_BLOCK", "SIG_DFL",

  "SIG_ERR", "SIG_IGN", "SIG_SETMASK", "SIG_UNBLOCK", "SI_ASYNCIO",

  "SI_MESGQ", "SI_QUEUE", "SI_TIMER", "SI_USER"

};

static const char *const signal_maybe[] =

{

  "kill", "raise", "sigaction", "sigaddset", "sigdelset", "sigemptyset",

  "sigfillset", "sigismember", "signal", "sigpending", "sigprocmask",

  "sigqueue", "sigsuspend", "sigtimedwait", "sigwait", "sigwaitinfo"

};

/* <stdarg.h>.  */

static const char *const stdarg_syms[] =

{

  "va_arg", "va_end", "va_start"

};

static const char *const stdarg_maybe[] =

{

  "va_list"

};

/* <stddef.h>.  */

static const char *const stddef_syms[] =

{

  "NULL", "offsetof"

};

static const char *const stddef_maybe[] =

{

};

/* <stdio.h>.  */

static const char *const stdio_syms[] =

{

  "BUFSIZ", "EOF", "FILENAME_MAX", "FOPEN_MAX", "L_ctermid", "L_cuserid",

  "L_tmpnam", "NULL", "SEEK_CUR", "SEEK_END", "SEEK_SET", "STREAM_MAX",

  "TMP_MAX", "stderr", "stdin", "stdout", "_IOFBF", "_IOLBF", "_IONBF"

};

static const char *const stdio_maybe[] =

{

  "clearerr", "fclose", "fdopen", "feof", "ferror", "fflush", "fgetc",

  "fgetpos", "fgets", "fileno", "flockfile", "fopen", "fprintf", "fputc",

  "fputs", "fread", "freopen", "fscanf", "fseek", "fsetpos", "ftell",

  "ftrylockfile", "funlockfile", "fwrite", "getc", "getchar",

  "getchar_unlocked", "getc_unlocked", "gets", "perror", "printf", "putc",

  "putchar", "putchar_unlocked", "putc_unlocked", "puts", "remove", "rename",

  "rewind", "scanf", "setbuf", "setvbuf", "sprintf", "sscanf", "tmpfile",

  "tmpnam", "ungetc", "vfprintf", "vprintf", "vsprintf"

};

/* <stdlib.h>.  */

static const char *const stdlib_syms[] =

{

  "EXIT_FAILURE", "EXIT_SUCCESS", "MB_CUR_MAX", "NULL", "RAND_MAX"

};

static const char *const stdlib_maybe[] =

{

  "abort", "abs", "atexit", "atof", "atoi", "atol", "bsearch", "calloc",

  "div", "exit", "free", "getenv", "labs", "ldiv", "malloc", "mblen",

  "mbstowcs", "mbtowc", "qsort", "rand", "rand_r", "realloc", "srand",

  "strtod", "strtol", "strtoul", "system", "wcstombs", "wctomb"

};

/* <string.h>.  */

static const char *const string_syms[] =

{

  "NULL"

};

static const char *const string_maybe[] =

{

  "memchr", "memcmp", "memcpy", "memmove", "memset", "strcat", "strchr",

  "strcmp", "strcoll", "strcpy", "strcspn", "strerror", "strlen",

  "strncat", "strncmp", "strncpy", "strpbrk", "strrchr", "strspn",

  "strstr", "strtok", "strtok_r", "strxfrm"

};

/* <sys/mman.h>.  */

static const char *const mman_syms[] =

{

  "MAP_FAILED", "MAP_FIXED", "MAP_PRIVATE", "MAP_SHARED", "MCL_CURRENT",

  "MCL_FUTURE", "MS_ASYNC", "MS_INVALIDATE", "MS_SYNC", "PROT_EXEC",

  "PROT_NONE", "PROT_READ", "PROT_WRITE"

};

static const char *const mman_maybe[] =

{

  "mlock", "mlockall", "mmap", "mprotect", "msync", "munlock", "munlockall",

  "munmap", "shm_open", "shm_unlock"

};

/* <sys/stat.h>.  */

static const char *const stat_syms[] =

{

  "S_IRGRP", "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU",

  "S_ISBLK", "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG",

  "S_ISUID", "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH",

  "S_IXUSR", "S_TYPEISMQ", "S_TYPEISSEM", "S_TYPEISSHM"

};

static const char *const stat_maybe[] =

{

  "chmod", "fchmod", "fstat", "mkdir", "mkfifo", "stat", "umask"

};

/* <sys/times.h>.  */

static const char *const times_syms[] =

{

};

static const char *const times_maybe[] =

{

  "times"

};

/* <sys/types.h>.  */

static const char *const types_syms[] =

{

};

static const char *const types_maybe[] =

{

};

/* <sys/utsname.h>.  */

static const char *const utsname_syms[] =

{

};

static const char *const utsname_maybe[] =

{

  "uname"

};

/* <sys/wait.h>.  */

static const char *const wait_syms[] =

{

  "WEXITSTATUS", "WIFEXITED", "WIFSIGNALED", "WIFSTOPPED", "WNOHANG",

  "WSTOPSIG", "WTERMSIG", "WUNTRACED"

};

static const char *const wait_maybe[] =

{

  "wait", "waitpid"

};

/* <termios.h>.  */

static const char *const termios_syms[] =

{

  "B0", "B110", "B1200", "B134", "B150", "B1800", "B19200", "B200", "B2400",

  "B300", "B38400", "B4800", "B50", "B600", "B75", "B9600", "BRKINT", "CLOCAL",

  "CREAD", "CS5", "CS6", "CS7", "CS8", "CSIZE", "CSTOPN", "ECHO", "ECHOE",

  "ECHOK", "ECHONL", "HUPCL", "ICANON", "ICRNL", "IEXTEN", "IGNBRK", "IGNCR",

  "IGNPAR", "INCLR", "INPCK", "ISIG", "ISTRIP", "IXOFF", "IXON", "NCCS",

  "NOFLSH", "OPOST", "PARENB", "PARMRK", "PARODD", "TCIFLUSH", "TCIOFF",

  "TCIOFLUSH", "TCOFLUSH", "TCOOFF", "TCOON", "TCSADRAIN", "TCSAFLUSH",

  "TCSANOW", "TOSTOP", "VEOF", "VEOL", "VERASE", "VINTR", "VKILL", "VMIN",

  "VQUIT", "VSTART", "VSTOP", "VSUSP", "VTIME"

};

static const char *const termios_maybe[] =

{

  "cfgetispeed", "cfgetospeed", "cfsetispeed", "cfsetospeed", "tcdrain",

  "tcflow", "tcflush", "tcgetattr", "tcsendbrk", "tcsetattr"

};

/* <time.h>.  */

static const char *const time_syms[] =

{

  "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"

};

static const char *const time_maybe[] =

{

  "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",

  "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",

  "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",

  "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",

  "timer_settime", "tzset"

};

/* <unistd.h>.  */

static const char *const unistd_syms[] =

{

  "F_OK", "NULL", "R_OK", "SEEK_CUR", "SEEK_END", "SEEK_SET", "STDERR_FILENO",

  "STDIN_FILENO", "STDOUT_FILENO", "W_OK", "X_OK",

  "_PC_ASYNC_IO", "_PC_CHOWN_RESTRICTED", "_PC_LINK_MAX", "_PC_MAX_CANON",

  "_PC_MAX_INPUT", "_PC_NAME_MAX", "_PC_NO_TRUNC", "_PC_PATH_MAX",

  "_PC_PIPE_BUF", "_PC_PRIO_IO", "_PC_SYNC_IO", "_PC_VDISABLE",

  "_SC_AIO_LISTIO_MAX", "_SC_AIO_MAX", "_SC_AIO_PRIO_DELTA_MAX",

  "_SC_ARG_MAX", "_SC_ASYNCHRONOUS_IO", "_SC_CHILD_MAX", "_SC_CLK_TCK",

  "_SC_DELAYTIMER_MAX", "_SC_FSYNC", "_SC_GETGR_R_SIZE_MAX",

  "_SC_GETPW_R_SIZE_MAX", "_SC_JOB_CONTROL", "_SC_LOGIN_NAME_MAX",

  "_SC_MAPPED_FILES", "_SC_MEMLOCK", "_SC_MEMLOCK_RANGE",

  "_SC_MEMORY_PROTECTION", "_SC_MESSAGE_PASSING", "_SC_MQ_OPEN_MAX",

  "_SC_MQ_PRIO_MAX", "_SC_NGROUPS_MAX", "_SC_OPEN_MAX", "_SC_PAGESIZE",

  "_SC_PRIORITIZED_IO", "_SC_PRIORITY_SCHEDULING", "_SC_REALTIME_SIGNALS",

  "_SC_RTSIG_MAX", "_SC_SAVED_IDS", "_SC_SEMAPHORES", "_SC_SEM_NSEMS_MAX",

  "_SC_SEM_VALUE_MAX", "_SC_SHARED_MEMORY_OBJECTS", "_SC_SIGQUEUE_MAX",

  "_SC_STREAM_MAX", "_SC_SYNCHRONIZED_IO", "_SC_THREADS",

  "_SC_THREAD_ATTR_STACKADDR", "_SC_THREAD_ATTR_STACKSIZE",

  "_SC_THREAD_DESTRUCTOR_ITERATIONS", "_SC_THREAD_PRIO_INHERIT",

  "_SC_THREAD_PRIORITY_SCHEDULING", "_SC_THREAD_PRIO_PROTECT",

  "_SC_THREAD_PROCESS_SHARED", "_SC_THREAD_SAFE_FUNCTIONS",

  "_SC_THREAD_STACK_MIN", "_SC_THREAD_THREADS_MAX", "_SC_TIMERS",

  "_SC_TIMER_MAX", "_SC_TTY_NAME_MAX", "_SC_TZNAME_MAX", "_SC_VERSION"

};

static const char *const unistd_maybe[] =

{

  "_POSIX_ASYNCHRONOUS_IO", "_POSIX_ASYNC_IO", "_POSIX_CHOWN_RESTRICTED",

  "_POSIX_FSYNC", "_POSIX_JOB_CONTROL", "_POSIX_MAPPED_FILES",

  "_POSIX_MEMLOCK", "_POSIX_MEMLOCK_RANGE", "_MEMORY_PROTECTION",

  "_POSIX_MESSAGE_PASSING", "_POSIX_NO_TRUNC", "_POSIX_PRIORITIZED_IO",

  "_POSIX_PRIORITY_SCHEDULING", "_POSIX_PRIO_IO", "_POSIX_REATIME_SIGNALS",

  "_POSIX_SAVED_IDS", "_POSIX_SEMAPHORES", "_POSIX_SHARED_MEMORY_OBJECTS",

  "_POSIX_SYNCHRONIZED_IO", "_POSIX_SYNC_IO", "_POSIX_THREADS",

  "_POSIX_THREAD_ATTR_STACKADDR", "_POSIX_THREAD_ATTR_STACKSIZE",

  "_POSIX_THREAD_PRIO_INHERIT", "_POSIX_THREAD_PRIO_PROTECT",

  "_POSIX_THREAD_PROCESS_SHARED", "_POSIX_THREAD_SAFE_FUNCTIONS",

  "_POSIX_THREAD_PRIORITY_SCHEDULING", "_POSIX_TIMERS",

  "_POSIX_VDISABLE", "_POSIX_VERSION",

  "_exit", "access", "alarm", "chdir", "chown", "close", "ctermid", "cuserid",

  "dup2", "dup", "execl", "execle", "execlp", "execv", "execve", "execvp",

  "fdatasync", "fork", "fpathconf", "fsync", "ftruncate", "getcwd", "getegid",

  "geteuid", "getgid", "getgroups", "getlogin", "getlogin_r", "getpgrp",

  "getpid", "getppid", "getuid", "isatty", "link", "lseek", "pathconf",

  "pause", "pipe", "read", "rmdir", "setgid", "setgpid", "setsid", "setuid",

  "sleep", "sleep", "sysconf", "tcgetpgrp", "tcsetpgrp", "ttyname",

  "ttyname_r", "unlink", "write"

};

/* <utime.h>.  */

static const char *const utime_syms[] =

{

};

static const char *const utime_maybe[] =

{

  "utime"

};

static struct header

{

  const char *name;

  const char *const *syms;

  size_t nsyms;

  const char *const *maybe;

  size_t nmaybe;

  const char *subset;

} headers[] =

{

#define H(n) \

  { #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \

    n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), NULL }

#define Hc(n, s) \

  { #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \

    n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), s }

#define Hs(n) \

  { "sys/" #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \

    n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), NULL }

  H(aio),

  H(assert),

  H(ctype),

  H(dirent),

  H(errno),

  H(fcntl),

  H(float),

  H(grp),

  H(limits),

  H(locale),

  H(math),

  Hc(mqueue, "_POSIX_MESSAGE_PASSING"),

  H(pthread),

  H(pwd),

  H(sched),

  H(semaphore),

  H(setjmp),

  H(signal),

  H(stdarg),

  H(stddef),

  H(stdio),

  H(stdlib),

  H(string),

  Hs(mman),

  Hs(stat),

  Hs(times),

  Hs(types),

  Hs(utsname),

  Hs(wait),

  H(termios),

  H(time),

  H(unistd),

  H(utime)

};

#define NUMBER_OF_HEADERS              (sizeof headers / sizeof *headers)

/* Format string to build command to invoke compiler.  */

static const char fmt[] = "\

echo \"#include <%s>\" |\

%s -E -dM -D_POSIX_SOURCE %s \

-isystem `%s --print-prog-name=include` - > %s";

static const char testfmt[] = "\

echo \"#include <unistd.h>\n#if !defined %s || %s == -1\n#error not defined\n#endif\n\" |\

%s -E -dM -D_POSIX_SOURCE %s \

-isystem `%s --print-prog-name=include` - 2> /dev/null > %s";

/* The compiler we use (given on the command line).  */

const char *CC;

/* The -I parameters for CC to find all headers.  */

const char *INC;

static char *xstrndup (const char *, size_t);

static const char **get_null_defines (void);

static int check_header (const struct header *, const char **);

static int xsystem (const char *);

int

main (int argc, char *argv[])

{

  int h;

  int result = 0;

  const char **ignore_list;

  CC = argc > 1 ? argv[1] : "gcc";

  INC = argc > 2 ? argv[2] : "";

  if (system (NULL) == 0)

    {

      puts ("Sorry, no command processor.");

      return EXIT_FAILURE;

    }

  /* First get list of symbols which are defined by the compiler.  */

  ignore_list = get_null_defines ();

  fputs ("Tested files:\n", stdout);

  for (h = 0; h < NUMBER_OF_HEADERS; ++h)

    result |= check_header (&headers[h], ignore_list);

  remove (macrofile);

  /* The test suite should return errors but for now this is not

     practical.  Give a warning and ask the user to correct the bugs.  */

  return result;

}

static char *

xstrndup (const char *s, size_t n)

{

  size_t len = n;

  char *new = malloc (len + 1);

  if (new == NULL)

    return NULL;

  new[len] = '\0';

  return memcpy (new, s, len);

}

/* Like system but propagate interrupt and quit signals.  */

int

xsystem (const char *cmd)

{

  int status;

  status = system (cmd);

  if (status != -1)

    {

      if (WIFSIGNALED (status))

	{

	  if (WTERMSIG (status) == SIGINT || WTERMSIG (status) == SIGQUIT)

	    raise (WTERMSIG (status));

	}

      else if (WIFEXITED (status))

	{

	  if (WEXITSTATUS (status) == SIGINT + 128

	      || WEXITSTATUS (status) == SIGQUIT + 128)

	    raise (WEXITSTATUS (status) - 128);

	}

    }

  return status;

}

static const char **

get_null_defines (void)

{

  char line[BUFSIZ], *command;

  char **result = NULL;

  size_t result_len = 0;

  size_t result_max = 0;

  FILE *input;

  int first = 1;

  int fd = mkstemp (macrofile);

  if (fd == -1)

    {

      printf ("mkstemp failed: %m\n");

      exit (1);

    }

  close (fd);

  command = malloc (sizeof fmt + sizeof "/dev/null" + 2 * strlen (CC)

		    + strlen (INC) + strlen (macrofile));

  if (command == NULL)

    {

      puts ("No more memory.");

      exit (1);

    }

  sprintf (command, fmt, "/dev/null", CC, INC, CC, macrofile);

  if (xsystem (command))

    {

      puts ("system() returned nonzero");

      return NULL;

    }

  free (command);

  input = fopen (macrofile, "r");

  if (input == NULL)

    {

      printf ("Could not read %s: ", macrofile);

      perror (NULL);

      return NULL;

    }

  while (fgets (line, sizeof line, input) != NULL)

    {

      char *start;

      if (strlen (line) < 9 || line[7] != ' ')

	{ /* "#define A" */

	  printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",

		  line);

	  continue;

	}

      if (line[8] == '_')

	/* It's a safe identifier.  */

	continue;

      if (result_len == result_max)

	{

	  result_max += 10;

	  result = realloc (result, result_max * sizeof (char **));

	  if (result == NULL)

	    {

	      puts ("No more memory.");

	      exit (1);

	    }

	}

      start = &line[8];

      result[result_len++] = xstrndup (start, strcspn (start, " ("));

      if (first)

	{

	  fputs ("The following identifiers will be ignored since the compiler defines them\nby default:\n", stdout);

	  first = 0;

	}

      puts (result[result_len - 1]);

    }

  if (result_len == result_max)

    {

      result_max += 1;

      result = realloc (result, result_max * sizeof (char **));

      if (result == NULL)

	{

	  puts ("No more memory.");

	  exit (1);

	}

    }

  result[result_len] = NULL;

  fclose (input);

  return (const char **) result;

}

static int

check_header (const struct header *header, const char **except)

{

  char line[BUFSIZ], command[sizeof fmt + strlen (header->name)

			     + 2 * strlen (CC)

			     + strlen (INC) + strlen (macrofile)];

  FILE *input;

  int result = 0;

  int found[header->nsyms];

  int i;

  memset (found, '\0', header->nsyms * sizeof (int));

  printf ("=== %s ===\n", header->name);

  sprintf (command, fmt, header->name, CC, INC, CC, macrofile);

  /* First see whether this subset is supported at all.  */

  if (header->subset != NULL)

    {

      sprintf (line, testfmt, header->subset, header->subset, CC, INC, CC,

	       macrofile);

      if (xsystem (line))

	{

	  printf ("!! not available\n");

	  return 0;

	}

    }

  if (xsystem (command))

    {

      puts ("system() returned nonzero");

      result = 1;

    }

  input = fopen (macrofile, "r");

  if (input == NULL)

    {

      printf ("Could not read %s: ", macrofile);

      perror (NULL);

      return 1;

    }

  while (fgets (line, sizeof line, input) != NULL)

    {

      const char **ignore;

      if (strlen (line) < 9 || line[7] != ' ')

	{ /* "#define A" */

	  printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",

		  line);

	  result = 1;

	  continue;

	}

      /* Find next char after the macro identifier; this can be either

	 a space or an open parenthesis.  */

      line[8 + strcspn (&line[8], " (")] = '\0';

      /* Now check whether it's one of the required macros.  */

      for (i = 0; i < header->nsyms; ++i)

	if (!strcmp (&line[8], header->syms[i]))

	  break;

      if (i < header->nsyms)

	{

	  found[i] = 1;

	  continue;

	}

      /* Symbols starting with "_" are ok.  */

      if (line[8] == '_')

	continue;

      /* Maybe one of the symbols which are always defined.  */

      for (ignore = except; *ignore != NULL; ++ignore)

	if (! strcmp (&line[8], *ignore))

	  break;

      if (*ignore != NULL)

	continue;

      /* Otherwise the symbol better should match one of the following.  */

      for (i = 0; i < header->nmaybe; ++i)

	if (fnmatch (header->maybe[i], &line[8], 0) == 0)