my ($size, $format, $used, $parent) = $info->@{qw(virtual-size format actual-size backing-filename)};
- ($size) = ($size =~ /^(\d+)$/) or die "size '$size' not an integer\n"; # untaint
+ ($size) = ($size =~ /^(\d+)$/); # untaint
+ die "size '$size' not an integer\n" if !defined($size);
# coerce back from string
$size = int($size);
- ($used) = ($used =~ /^(\d+)$/) or die "used '$used' not an integer\n"; # untaint
+ ($used) = ($used =~ /^(\d+)$/); # untaint
+ die "used '$used' not an integer\n" if !defined($used);
# coerce back from string
$used = int($used);
- ($format) = ($format =~ /^(\S+)$/) or die "format '$format' includes whitespace\n"; # untaint
+ ($format) = ($format =~ /^(\S+)$/); # untaint
+ die "format '$format' includes whitespace\n" if !defined($format);
if (defined($parent)) {
($parent) = ($parent =~ /^(\S+)$/); # untaint
}