util

UNIX下perl实现代码

  util.c AOK
 
     Illegal octal digit ignored 
	my $a = oct "029" ;

     Illegal hex digit ignored 
	my $a = hex "0xv9" ;

     Illegal binary digit ignored
      my $a = oct "0b9" ;
     
     Integer overflow in binary number
	my $a =  oct "0b111111111111111111111111111111111111111111" ;
     Binary number > 0b11111111111111111111111111111111 non-portable
   	$a =  oct "0b111111111111111111111111111111111" ;
     Integer overflow in octal number
	my $a =  oct "077777777777777777777777777777" ;
     Octal number > 037777777777 non-portable
   	$a =  oct "0047777777777" ;
     Integer overflow in hexadecimal number
	my $a =  hex "0xffffffffffffffffffff" ;
     Hexadecimal number > 0xffffffff non-portable
   	$a =  hex "0x1ffffffff" ;

__END__
# util.c
use warnings 'digit' ;
my $a = oct "029" ;
no warnings 'digit' ;
$a = oct "029" ;
EXPECT
Illegal octal digit '9' ignored at - line 3.
########
# util.c
use warnings 'digit' ;
my $a =  hex "0xv9" ;
no warnings 'digit' ;
$a =  hex "0xv9" ;
EXPECT
Illegal hexadecimal digit 'v' ignored at - line 3.
########
# util.c
use warnings 'digit' ;
my $a =  oct "0b9" ;
no warnings 'digit' ;
$a =  oct "0b9" ;
EXPECT
Illegal binary digit '9' ignored at - line 3.
########
# util.c
use warnings 'overflow' ;
my $a =  oct "0b11111111111111111111111111111111111111111111111111111111111111111";
no warnings 'overflow' ;
$a =  oct "0b11111111111111111111111111111111111111111111111111111111111111111";
EXPECT
Integer overflow in binary number at - line 3.
########
# util.c
use warnings 'overflow' ;
my $a =  hex "0xffffffffffffffffffff" ;
no warnings 'overflow' ;
$a =  hex "0xffffffffffffffffffff" ;
EXPECT
Integer overflow in hexadecimal number at - line 3.
########
# util.c
use warnings 'overflow' ;
my $a =  oct "077777777777777777777777777777" ;
no warnings 'overflow' ;
$a =  oct "077777777777777777777777777777" ;
EXPECT
Integer overflow in octal number at - line 3.
########
# util.c
use warnings 'portable' ;
my $a =  oct "0b011111111111111111111111111111110" ;
   $a =  oct "0b011111111111111111111111111111111" ;
   $a =  oct "0b111111111111111111111111111111111" ;
no warnings 'portable' ;
   $a =  oct "0b011111111111111111111111111111110" ;
   $a =  oct "0b011111111111111111111111111111111" ;
   $a =  oct "0b111111111111111111111111111111111" ;
EXPECT
Binary number > 0b11111111111111111111111111111111 non-portable at - line 5.
########
# util.c
use warnings 'portable' ;
my $a =  hex "0x0fffffffe" ;
   $a =  hex "0x0ffffffff" ;
   $a =  hex "0x1ffffffff" ;
no warnings 'portable' ;
   $a =  hex "0x0fffffffe" ;
   $a =  hex "0x0ffffffff" ;
   $a =  hex "0x1ffffffff" ;
EXPECT
Hexadecimal number > 0xffffffff non-portable at - line 5.
########
# util.c
use warnings 'portable' ;
my $a =  oct "0037777777776" ;
   $a =  oct "0037777777777" ;
   $a =  oct "0047777777777" ;
no warnings 'portable' ;
   $a =  oct "0037777777776" ;
   $a =  oct "0037777777777" ;
   $a =  oct "0047777777777" ;
EXPECT
Octal number > 037777777777 non-portable at - line 5.