Tip #2 from the Basic debugging checklist: Display the contents of variables using print or warn:

use strict;
use warnings;
use Digest::SHA qw( sha256_hex );

my $h = 5472151337331275;
print "\$h = >$h<\n\n";
print sha256_hex($h), "\n";

[download]

On Perl v5.24.0, which is 64-bit:

17:40 >perl 1639_SoPW.pl
$h = >5472151337331275<

b5951ee4a7cbfdc9df6b1b74de2d1ba865de40796c756cebe88a806c5a7b9e60

17:40 >

[download]

— which is as expected. But on Perl v5.14.4, which is 32-bit:

17:33 >perl 1639_SoPW.pl
$h = >5.47215133733128e+015<

32838cef9e4571b4fa9a5297e265cf860a31774de3ca339878d87238af604a45

17:34 >

[download]

As Anonymous Monk says, the fix is to turn the argument from a number into a string.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Perl sha256 question by Athanasius
in thread Perl sha256 question by Anonymous Monk

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