5 our(@ISA, %EXPORT_TAGS, @EXPORT_OK, @EXPORT, $AUTOLOAD, %SIGRT) = ();
13 use Fcntl qw(FD_CLOEXEC F_DUPFD F_GETFD F_GETFL F_GETLK F_RDLCK F_SETFD
14 F_SETFL F_SETLK F_SETLKW F_UNLCK F_WRLCK O_ACCMODE O_APPEND
15 O_CREAT O_EXCL O_NOCTTY O_NONBLOCK O_RDONLY O_RDWR O_TRUNC
16 O_WRONLY SEEK_CUR SEEK_END SEEK_SET
17 S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU S_ISGID S_ISUID
18 S_IWGRP S_IWOTH S_IWUSR S_IXGRP S_IXOTH S_IXUSR);
20 # Grandfather old foo_h form to new :foo_h form
24 load_imports() unless $loaded++;
26 my @list = map { m/^\w+_h$/ ? ":$_" : $_ } @_;
27 local $Exporter::ExportLevel = 1;
28 Exporter::import($this,@list);
31 sub croak { require Carp; goto &Carp::croak }
32 # declare usage to assist AutoLoad
35 XSLoader::load 'POSIX', $VERSION;
37 my %NON_CONSTS = (map {($_,1)}
38 qw(S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISREG WEXITSTATUS
39 WIFEXITED WIFSIGNALED WIFSTOPPED WSTOPSIG WTERMSIG));
43 no warnings 'uninitialized';
44 if ($AUTOLOAD =~ /::(_?[a-z])/) {
46 $AutoLoader::AUTOLOAD = $AUTOLOAD;
47 goto &AutoLoader::AUTOLOAD
50 my $constname = $AUTOLOAD;
51 $constname =~ s/.*:://;
52 if ($NON_CONSTS{$constname}) {
53 my ($val, $error) = &int_macro_int($constname, $_[0]);
54 croak $error if $error;
55 *$AUTOLOAD = sub { &int_macro_int($constname, $_[0]) };
57 my ($error, $val) = constant($constname);
58 croak $error if $error;
59 *$AUTOLOAD = sub { $val };
65 package POSIX::SigAction;
67 use AutoLoader 'AUTOLOAD';
71 use AutoLoader 'AUTOLOAD';
75 use vars qw($SIGACTION_FLAGS $_SIGRTMIN $_SIGRTMAX $_sigrtn @ISA);
76 @POSIX::SigRt::ISA = qw(Tie::StdHash);
80 tie %POSIX::SIGRT, 'POSIX::SigRt';
91 croak "Usage: POSIX::$mess";
96 croak "Use method $mess instead";
102 croak "Unimplemented: POSIX::$mess";
106 usage "assert(expr)" if @_ != 1;
108 croak "Assertion failed";
113 usage "tolower(string)" if @_ != 1;
118 usage "toupper(string)" if @_ != 1;
123 usage "closedir(dirhandle)" if @_ != 1;
124 CORE::closedir($_[0]);
128 usage "opendir(directory)" if @_ != 1;
130 CORE::opendir($dirhandle, $_[0])
136 usage "readdir(dirhandle)" if @_ != 1;
137 CORE::readdir($_[0]);
141 usage "rewinddir(dirhandle)" if @_ != 1;
142 CORE::rewinddir($_[0]);
146 usage "errno()" if @_ != 0;
151 usage "creat(filename, mode)" if @_ != 2;
152 &open($_[0], &O_WRONLY | &O_CREAT | &O_TRUNC, $_[1]);
156 usage "fcntl(filehandle, cmd, arg)" if @_ != 3;
157 CORE::fcntl($_[0], $_[1], $_[2]);
161 usage "getgrgid(gid)" if @_ != 1;
162 CORE::getgrgid($_[0]);
166 usage "getgrnam(name)" if @_ != 1;
167 CORE::getgrnam($_[0]);
171 usage "atan2(x,y)" if @_ != 2;
172 CORE::atan2($_[0], $_[1]);
176 usage "cos(x)" if @_ != 1;
181 usage "exp(x)" if @_ != 1;
186 usage "fabs(x)" if @_ != 1;
191 usage "log(x)" if @_ != 1;
196 usage "pow(x,exponent)" if @_ != 2;
201 usage "sin(x)" if @_ != 1;
206 usage "sqrt(x)" if @_ != 1;
211 usage "getpwnam(name)" if @_ != 1;
212 CORE::getpwnam($_[0]);
216 usage "getpwuid(uid)" if @_ != 1;
217 CORE::getpwuid($_[0]);
221 unimpl "longjmp() is C-specific: use die instead";
225 unimpl "setjmp() is C-specific: use eval {} instead";
229 unimpl "siglongjmp() is C-specific: use die instead";
233 unimpl "sigsetjmp() is C-specific: use eval {} instead";
237 usage "kill(pid, sig)" if @_ != 2;
238 CORE::kill $_[1], $_[0];
242 usage "raise(sig)" if @_ != 1;
243 CORE::kill $_[0], $$; # Is this good enough?
247 unimpl "offsetof() is C-specific, stopped";
251 redef "IO::Handle::clearerr()";
255 redef "IO::Handle::close()";
259 redef "IO::Handle::new_from_fd()";
263 redef "IO::Handle::eof()";
267 redef "IO::Handle::getc()";
271 redef "IO::Handle::gets()";
275 redef "IO::Handle::fileno()";
279 redef "IO::File::open()";
283 unimpl "fprintf() is C-specific--use printf instead";
287 unimpl "fputc() is C-specific--use print instead";
291 unimpl "fputs() is C-specific--use print instead";
295 unimpl "fread() is C-specific--use read instead";
299 unimpl "freopen() is C-specific--use open instead";
303 unimpl "fscanf() is C-specific--use <> and regular expressions instead";
307 redef "IO::Seekable::seek()";
311 redef "IO::Handle::sync()";
315 redef "IO::Handle::error()";
319 redef "IO::Handle::flush()";
323 redef "IO::Seekable::getpos()";
327 redef "IO::Seekable::setpos()";
331 redef "IO::Seekable::tell()";
335 unimpl "fwrite() is C-specific--use print instead";
339 usage "getc(handle)" if @_ != 1;
344 usage "getchar()" if @_ != 0;
349 usage "gets()" if @_ != 0;
354 print STDERR "@_: " if @_;
355 print STDERR $!,"\n";
359 usage "printf(pattern, args...)" if @_ < 1;
360 CORE::printf STDOUT @_;
364 unimpl "putc() is C-specific--use print instead";
368 unimpl "putchar() is C-specific--use print instead";
372 unimpl "puts() is C-specific--use print instead";
376 usage "remove(filename)" if @_ != 1;
377 (-d $_[0]) ? CORE::rmdir($_[0]) : CORE::unlink($_[0]);
381 usage "rename(oldfilename, newfilename)" if @_ != 2;
382 CORE::rename($_[0], $_[1]);
386 usage "rewind(filehandle)" if @_ != 1;
387 CORE::seek($_[0],0,0);
391 unimpl "scanf() is C-specific--use <> and regular expressions instead";
395 usage "sprintf(pattern,args)" if @_ == 0;
396 CORE::sprintf(shift,@_);
400 unimpl "sscanf() is C-specific--use regular expressions instead";
404 redef "IO::File::new_tmpfile()";
408 redef "IO::Handle::ungetc()";
412 unimpl "vfprintf() is C-specific";
416 unimpl "vprintf() is C-specific";
420 unimpl "vsprintf() is C-specific";
424 usage "abs(x)" if @_ != 1;
429 unimpl "atexit() is C-specific: use END {} instead";
433 unimpl "atof() is C-specific, stopped";
437 unimpl "atoi() is C-specific, stopped";
441 unimpl "atol() is C-specific, stopped";
445 unimpl "bsearch() not supplied";
449 unimpl "calloc() is C-specific, stopped";
453 unimpl "div() is C-specific, use /, % and int instead";
457 usage "exit(status)" if @_ != 1;
462 unimpl "free() is C-specific, stopped";
466 usage "getenv(name)" if @_ != 1;
471 unimpl "labs() is C-specific, use abs instead";
475 unimpl "ldiv() is C-specific, use /, % and int instead";
479 unimpl "malloc() is C-specific, stopped";
483 unimpl "qsort() is C-specific, use sort instead";
487 unimpl "rand() is non-portable, use Perl's rand instead";
491 unimpl "realloc() is C-specific, stopped";
499 usage "system(command)" if @_ != 1;
504 unimpl "memchr() is C-specific, use index() instead";
508 unimpl "memcmp() is C-specific, use eq instead";
512 unimpl "memcpy() is C-specific, use = instead";
516 unimpl "memmove() is C-specific, use = instead";
520 unimpl "memset() is C-specific, use x instead";
524 unimpl "strcat() is C-specific, use .= instead";
528 unimpl "strchr() is C-specific, use index() instead";
532 unimpl "strcmp() is C-specific, use eq instead";
536 unimpl "strcpy() is C-specific, use = instead";
540 unimpl "strcspn() is C-specific, use regular expressions instead";
544 usage "strerror(errno)" if @_ != 1;
550 unimpl "strlen() is C-specific, use length instead";
554 unimpl "strncat() is C-specific, use .= instead";
558 unimpl "strncmp() is C-specific, use eq instead";
562 unimpl "strncpy() is C-specific, use = instead";
566 unimpl "strpbrk() is C-specific, stopped";
570 unimpl "strrchr() is C-specific, use rindex() instead";
574 unimpl "strspn() is C-specific, stopped";
578 usage "strstr(big, little)" if @_ != 2;
579 CORE::index($_[0], $_[1]);
583 unimpl "strtok() is C-specific, stopped";
587 usage "chmod(mode, filename)" if @_ != 2;
588 CORE::chmod($_[0], $_[1]);
592 usage "fstat(fd)" if @_ != 1;
594 CORE::open(TMP, "<&$_[0]"); # Gross.
595 my @l = CORE::stat(TMP);
601 usage "mkdir(directoryname, mode)" if @_ != 2;
602 CORE::mkdir($_[0], $_[1]);
606 usage "stat(filename)" if @_ != 1;
611 usage "umask(mask)" if @_ != 1;
616 usage "wait()" if @_ != 0;
621 usage "waitpid(pid, options)" if @_ != 2;
622 CORE::waitpid($_[0], $_[1]);
626 usage "gmtime(time)" if @_ != 1;
631 usage "localtime(time)" if @_ != 1;
632 CORE::localtime($_[0]);
636 usage "time()" if @_ != 0;
641 usage "alarm(seconds)" if @_ != 1;
646 usage "chdir(directory)" if @_ != 1;
651 usage "chown(uid, gid, filename)" if @_ != 3;
652 CORE::chown($_[0], $_[1], $_[2]);
656 unimpl "execl() is C-specific, stopped";
660 unimpl "execle() is C-specific, stopped";
664 unimpl "execlp() is C-specific, stopped";
668 unimpl "execv() is C-specific, stopped";
672 unimpl "execve() is C-specific, stopped";
676 unimpl "execvp() is C-specific, stopped";
680 usage "fork()" if @_ != 0;
685 usage "getegid()" if @_ != 0;
690 usage "geteuid()" if @_ != 0;
695 usage "getgid()" if @_ != 0;
700 usage "getgroups()" if @_ != 0;
702 grep(!$seen{$_}++, split(' ', $) ));
706 usage "getlogin()" if @_ != 0;
711 usage "getpgrp()" if @_ != 0;
716 usage "getpid()" if @_ != 0;
721 usage "getppid()" if @_ != 0;
726 usage "getuid()" if @_ != 0;
731 usage "isatty(filehandle)" if @_ != 1;
736 usage "link(oldfilename, newfilename)" if @_ != 2;
737 CORE::link($_[0], $_[1]);
741 usage "rmdir(directoryname)" if @_ != 1;
746 redef "IO::Handle::setbuf()";
750 redef "IO::Handle::setvbuf()";
754 usage "sleep(seconds)" if @_ != 1;
755 $_[0] - CORE::sleep($_[0]);
759 usage "unlink(filename)" if @_ != 1;
764 usage "utime(filename, atime, mtime)" if @_ != 3;
765 CORE::utime($_[1], $_[2], $_[0]);
771 assert_h => [qw(assert NDEBUG)],
773 ctype_h => [qw(isalnum isalpha iscntrl isdigit isgraph islower
774 isprint ispunct isspace isupper isxdigit tolower toupper)],
778 errno_h => [qw(E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT
779 EAGAIN EALREADY EBADF EBUSY ECHILD ECONNABORTED
780 ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDOM EDQUOT
781 EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH EINPROGRESS
782 EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK
783 EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH
784 ENFILE ENOBUFS ENODEV ENOENT ENOEXEC ENOLCK ENOMEM
785 ENOPROTOOPT ENOSPC ENOSYS ENOTBLK ENOTCONN ENOTDIR
786 ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM
787 EPFNOSUPPORT EPIPE EPROCLIM EPROTONOSUPPORT EPROTOTYPE
788 ERANGE EREMOTE ERESTART EROFS ESHUTDOWN ESOCKTNOSUPPORT
789 ESPIPE ESRCH ESTALE ETIMEDOUT ETOOMANYREFS ETXTBSY
790 EUSERS EWOULDBLOCK EXDEV errno)],
792 fcntl_h => [qw(FD_CLOEXEC F_DUPFD F_GETFD F_GETFL F_GETLK F_RDLCK
793 F_SETFD F_SETFL F_SETLK F_SETLKW F_UNLCK F_WRLCK
794 O_ACCMODE O_APPEND O_CREAT O_EXCL O_NOCTTY O_NONBLOCK
795 O_RDONLY O_RDWR O_TRUNC O_WRONLY
797 SEEK_CUR SEEK_END SEEK_SET
798 S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU
799 S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISGID S_ISREG S_ISUID
800 S_IWGRP S_IWOTH S_IWUSR)],
802 float_h => [qw(DBL_DIG DBL_EPSILON DBL_MANT_DIG
803 DBL_MAX DBL_MAX_10_EXP DBL_MAX_EXP
804 DBL_MIN DBL_MIN_10_EXP DBL_MIN_EXP
805 FLT_DIG FLT_EPSILON FLT_MANT_DIG
806 FLT_MAX FLT_MAX_10_EXP FLT_MAX_EXP
807 FLT_MIN FLT_MIN_10_EXP FLT_MIN_EXP
809 LDBL_DIG LDBL_EPSILON LDBL_MANT_DIG
810 LDBL_MAX LDBL_MAX_10_EXP LDBL_MAX_EXP
811 LDBL_MIN LDBL_MIN_10_EXP LDBL_MIN_EXP)],
815 limits_h => [qw( ARG_MAX CHAR_BIT CHAR_MAX CHAR_MIN CHILD_MAX
816 INT_MAX INT_MIN LINK_MAX LONG_MAX LONG_MIN MAX_CANON
817 MAX_INPUT MB_LEN_MAX NAME_MAX NGROUPS_MAX OPEN_MAX
818 PATH_MAX PIPE_BUF SCHAR_MAX SCHAR_MIN SHRT_MAX SHRT_MIN
819 SSIZE_MAX STREAM_MAX TZNAME_MAX UCHAR_MAX UINT_MAX
820 ULONG_MAX USHRT_MAX _POSIX_ARG_MAX _POSIX_CHILD_MAX
821 _POSIX_LINK_MAX _POSIX_MAX_CANON _POSIX_MAX_INPUT
822 _POSIX_NAME_MAX _POSIX_NGROUPS_MAX _POSIX_OPEN_MAX
823 _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_SSIZE_MAX
824 _POSIX_STREAM_MAX _POSIX_TZNAME_MAX)],
826 locale_h => [qw(LC_ALL LC_COLLATE LC_CTYPE LC_MESSAGES
827 LC_MONETARY LC_NUMERIC LC_TIME NULL
828 localeconv setlocale)],
830 math_h => [qw(HUGE_VAL acos asin atan ceil cosh fabs floor fmod
831 frexp ldexp log10 modf pow sinh tan tanh)],
835 setjmp_h => [qw(longjmp setjmp siglongjmp sigsetjmp)],
837 signal_h => [qw(SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK
838 SA_RESETHAND SA_RESTART SA_SIGINFO SIGABRT SIGALRM
839 SIGCHLD SIGCONT SIGFPE SIGHUP SIGILL SIGINT SIGKILL
840 SIGPIPE %SIGRT SIGRTMIN SIGRTMAX SIGQUIT SIGSEGV SIGSTOP
841 SIGTERM SIGTSTP SIGTTIN SIGTTOU SIGUSR1 SIGUSR2
842 SIG_BLOCK SIG_DFL SIG_ERR SIG_IGN SIG_SETMASK SIG_UNBLOCK
843 raise sigaction signal sigpending sigprocmask sigsuspend)],
847 stddef_h => [qw(NULL offsetof)],
849 stdio_h => [qw(BUFSIZ EOF FILENAME_MAX L_ctermid L_cuserid
850 L_tmpname NULL SEEK_CUR SEEK_END SEEK_SET
851 STREAM_MAX TMP_MAX stderr stdin stdout
852 clearerr fclose fdopen feof ferror fflush fgetc fgetpos
853 fgets fopen fprintf fputc fputs fread freopen
854 fscanf fseek fsetpos ftell fwrite getchar gets
855 perror putc putchar puts remove rewind
856 scanf setbuf setvbuf sscanf tmpfile tmpnam
857 ungetc vfprintf vprintf vsprintf)],
859 stdlib_h => [qw(EXIT_FAILURE EXIT_SUCCESS MB_CUR_MAX NULL RAND_MAX
860 abort atexit atof atoi atol bsearch calloc div
861 free getenv labs ldiv malloc mblen mbstowcs mbtowc
862 qsort realloc strtod strtol strtoul wcstombs wctomb)],
864 string_h => [qw(NULL memchr memcmp memcpy memmove memset strcat
865 strchr strcmp strcoll strcpy strcspn strerror strlen
866 strncat strncmp strncpy strpbrk strrchr strspn strstr
869 sys_stat_h => [qw(S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU
870 S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISGID S_ISREG
871 S_ISUID S_IWGRP S_IWOTH S_IWUSR S_IXGRP S_IXOTH S_IXUSR
878 sys_utsname_h => [qw(uname)],
880 sys_wait_h => [qw(WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED
881 WNOHANG WSTOPSIG WTERMSIG WUNTRACED)],
883 termios_h => [qw( B0 B110 B1200 B134 B150 B1800 B19200 B200 B2400
884 B300 B38400 B4800 B50 B600 B75 B9600 BRKINT CLOCAL
885 CREAD CS5 CS6 CS7 CS8 CSIZE CSTOPB ECHO ECHOE ECHOK
886 ECHONL HUPCL ICANON ICRNL IEXTEN IGNBRK IGNCR IGNPAR
887 INLCR INPCK ISIG ISTRIP IXOFF IXON NCCS NOFLSH OPOST
888 PARENB PARMRK PARODD TCIFLUSH TCIOFF TCIOFLUSH TCION
889 TCOFLUSH TCOOFF TCOON TCSADRAIN TCSAFLUSH TCSANOW
890 TOSTOP VEOF VEOL VERASE VINTR VKILL VMIN VQUIT VSTART
892 cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain
893 tcflow tcflush tcgetattr tcsendbreak tcsetattr )],
895 time_h => [qw(CLK_TCK CLOCKS_PER_SEC NULL asctime clock ctime
896 difftime mktime strftime tzset tzname)],
898 unistd_h => [qw(F_OK NULL R_OK SEEK_CUR SEEK_END SEEK_SET
899 STDERR_FILENO STDIN_FILENO STDOUT_FILENO W_OK X_OK
900 _PC_CHOWN_RESTRICTED _PC_LINK_MAX _PC_MAX_CANON
901 _PC_MAX_INPUT _PC_NAME_MAX _PC_NO_TRUNC _PC_PATH_MAX
902 _PC_PIPE_BUF _PC_VDISABLE _POSIX_CHOWN_RESTRICTED
903 _POSIX_JOB_CONTROL _POSIX_NO_TRUNC _POSIX_SAVED_IDS
904 _POSIX_VDISABLE _POSIX_VERSION _SC_ARG_MAX
905 _SC_CHILD_MAX _SC_CLK_TCK _SC_JOB_CONTROL
906 _SC_NGROUPS_MAX _SC_OPEN_MAX _SC_PAGESIZE _SC_SAVED_IDS
907 _SC_STREAM_MAX _SC_TZNAME_MAX _SC_VERSION
908 _exit access ctermid cuserid
909 dup2 dup execl execle execlp execv execve execvp
910 fpathconf fsync getcwd getegid geteuid getgid getgroups
911 getpid getuid isatty lseek pathconf pause setgid setpgid
912 setsid setuid sysconf tcgetpgrp tcsetpgrp ttyname)],
918 # Exporter::export_tags();
920 # De-duplicate the export list:
922 @export{map {@$_} values %EXPORT_TAGS} = ();
923 # Doing the de-dup with a temporary hash has the advantage that the SVs in
924 # @EXPORT are actually shared hash key sacalars, which will save some memory.
925 push @EXPORT, keys %export;
990 package POSIX::SigAction;
992 sub new { bless {HANDLER => $_[1], MASK => $_[2], FLAGS => $_[3] || 0, SAFE => 0}, $_[0] }
993 sub handler { $_[0]->{HANDLER} = $_[1] if @_ > 1; $_[0]->{HANDLER} };
994 sub mask { $_[0]->{MASK} = $_[1] if @_ > 1; $_[0]->{MASK} };
995 sub flags { $_[0]->{FLAGS} = $_[1] if @_ > 1; $_[0]->{FLAGS} };
996 sub safe { $_[0]->{SAFE} = $_[1] if @_ > 1; $_[0]->{SAFE} };
998 package POSIX::SigRt;
1002 $_SIGRTMIN = &POSIX::SIGRTMIN;
1003 $_SIGRTMAX = &POSIX::SIGRTMAX;
1004 $_sigrtn = $_SIGRTMAX - $_SIGRTMIN;
1008 &_init unless defined $_sigrtn;
1009 die "POSIX::SigRt not available" unless defined $_sigrtn && $_sigrtn > 0;
1015 # Allow (SIGRT)?MIN( + n)?, a common idiom when doing these things in C.
1016 $rtsig = $_SIGRTMIN + ($1 || 0)
1017 if $rtsig =~ /^(?:(?:SIG)?RT)?MIN(\s*\+\s*(\d+))?$/;
1022 my $rtsig = _getsig($_[1]);
1023 my $ok = $rtsig >= $_SIGRTMIN && $rtsig <= $_SIGRTMAX;
1028 my ($rtsig, $ok) = &_exist;
1029 die "No POSIX::SigRt signal $_[1] (valid range SIGRTMIN..SIGRTMAX, or $_SIGRTMIN..$_SIGRTMAX)"
1035 my ($rtsig, $handler, $flags) = @_;
1036 my $sigset = POSIX::SigSet->new($rtsig);
1037 my $sigact = POSIX::SigAction->new($handler,
1040 POSIX::sigaction($rtsig, $sigact);
1043 sub EXISTS { &_exist }
1044 sub FETCH { my $rtsig = &_check;
1045 my $oa = POSIX::SigAction->new();
1046 POSIX::sigaction($rtsig, undef, $oa);
1047 return $oa->{HANDLER} }
1048 sub STORE { my $rtsig = &_check; new($rtsig, $_[2], $SIGACTION_FLAGS) }
1049 sub DELETE { delete $SIG{ &_check } }
1050 sub CLEAR { &_exist; delete @SIG{ &POSIX::SIGRTMIN .. &POSIX::SIGRTMAX } }
1051 sub SCALAR { &_croak; $_sigrtn + 1 }