3 # Copyright 2002, Larry Wall.
5 # You may redistribute only under the same terms as Perl 5, as specified
6 # in the README file that comes with the distribution.
9 # I ought to keep this test easily backwards compatible to 5.004, so no
12 # This test checks downgrade behaviour on pre-5.8 perls when new 5.8 features
18 @INC = ('.', '../lib');
22 require Config; import Config;
23 if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
24 print "1..0 # Skip: Storable was not built\n";
30 use Storable qw (dclone store retrieve freeze thaw nstore nfreeze);
34 my $max_uv_m1 = ~0 ^ 1;
35 # Express it in this way so as not to use any addition, as 5.6 maths would
36 # do this in NVs on 64 bit machines, and we're overflowing IVs so can't use
38 my $max_iv_p1 = $max_uv ^ ($max_uv >> 1);
40 my $temp = sprintf "%#x", ~0;
47 my $min_iv = do {use integer; -$max_iv-1}; # 2s complement assumption
49 my @processes = (["dclone", \&do_clone],
50 ["freeze/thaw", \&freeze_and_thaw],
51 ["nfreeze/thaw", \&nfreeze_and_thaw],
52 ["store/retrieve", \&store_and_retrieve],
53 ["nstore/retrieve", \&nstore_and_retrieve],
56 (# IV bounds of 8 bits
57 -1, 0, 1, -127, -128, -129, 42, 126, 127, 128, 129, 254, 255, 256, 257,
58 # IV bounds of 32 bits
59 -2147483647, -2147483648, -2147483649, 2147483646, 2147483647, 2147483648,
61 $min_iv, do {use integer; $min_iv + 1}, do {use integer; $max_iv - 1},
63 # UV bounds at 32 bits
64 0x7FFFFFFF, 0x80000000, 0x80000001, 0xFFFFFFFF, 0xDEADBEEF,
66 $max_iv_p1, $max_uv_m1, $max_uv, $lots_of_9C,
71 plan tests => @processes * @numbers * 5;
73 my $file = "integer.$$";
74 die "Temporary file '$file' already exists" if -e $file;
76 END { while (-f $file) {unlink $file or die "Can't unlink '$file': $!" }}
80 my $copy = eval {dclone $data};
81 is ($@, '', 'Should be no error dcloning');
82 ok (1, "dlcone is only 1 process, not 2");
88 my $frozen = eval {freeze $data};
89 is ($@, '', 'Should be no error freezing');
90 my $copy = eval {thaw $frozen};
91 is ($@, '', 'Should be no error thawing');
95 sub nfreeze_and_thaw {
97 my $frozen = eval {nfreeze $data};
98 is ($@, '', 'Should be no error nfreezing');
99 my $copy = eval {thaw $frozen};
100 is ($@, '', 'Should be no error thawing');
104 sub store_and_retrieve {
106 my $frozen = eval {store $data, $file};
107 is ($@, '', 'Should be no error storing');
108 my $copy = eval {retrieve $file};
109 is ($@, '', 'Should be no error retrieving');
113 sub nstore_and_retrieve {
115 my $frozen = eval {nstore $data, $file};
116 is ($@, '', 'Should be no error storing');
117 my $copy = eval {retrieve $file};
118 is ($@, '', 'Should be no error retrieving');
122 foreach (@processes) {
123 my ($process, $sub) = @$_;
124 foreach my $number (@numbers) {
125 # as $number is an alias into @numbers, we don't want any side effects of
126 # conversion macros affecting later runs, so pass a copy to Storable:
127 my $copy1 = my $copy2 = my $copy0 = $number;
128 my $copy_s = &$sub (\$copy0);
129 if (is (ref $copy_s, "SCALAR", "got back a scalar ref?")) {
130 # Test inside use integer to see if the bit pattern is identical
131 # and outside to see if the sign is right.
132 # On 5.8 we don't need this trickery anymore.
133 # We really do need 2 copies here, as conversion may have side effect
134 # bugs. In particular, I know that this happens:
135 # perl5.00503 -le '$a = "-2147483649"; $a & 0; print $a; print $a+1'
139 my $copy_s1 = my $copy_s2 = $$copy_s;
140 # On 5.8 can do this with a straight ==, due to the integer/float maths
141 # on 5.6 can't do this with
142 # my $eq = do {use integer; $copy_s1 == $copy1} && $copy_s1 == $copy1;
143 # because on builds with IV as long long it tickles bugs.
144 # (Uncomment it and the Devel::Peek line below to see the messed up
145 # state of the scalar, with PV showing the correct string for the
146 # number, and IV holding a bogus value which has been truncated to 32 bits
148 # So, check the bit patterns are identical, and check that the sign is the
149 # same. This works on all the versions in all the sizes.
150 # $eq = && (($copy_s1 <=> 0) == ($copy1 <=> 0));
151 # Split this into 2 tests, to cater for 5.005_03
153 # Aargh. Even this doesn't work because 5.6.x sends values with (same
154 # number of decimal digits as ~0 + 1) via atof. So ^ is getting strings
155 # cast to doubles cast to integers. And that truncates low order bits.
156 # my $bit = ok (($copy_s1 ^ $copy1) == 0, "$process $copy1 (bitpattern)");
158 # Oh well; at least the parser gets it right. :-)
159 my $copy_s3 = eval $copy_s1;
160 die "Was supposed to have number $copy_s3, got error $@"
161 unless defined $copy_s3;
162 my $bit = ok (($copy_s3 ^ $copy1) == 0, "$process $copy1 (bitpattern)");
163 # This is sick. 5.005_03 survives without the IV/UV flag, and somehow
164 # gets it right, providing you don't have side effects of conversion.
166 # $TODO = "pre 5.6 doesn't have flag to distinguish IV/UV"
167 # if $[ < 5.005_56 and $copy1 > $max_iv;
168 my $sign = ok (($copy_s2 <=> 0) == ($copy2 <=> 0),
169 "$process $copy1 (sign)");
171 unless ($bit and $sign) {
172 printf "# Passed in %s (%#x, %i)\n# got back '%s' (%#x, %i)\n",
173 $copy1, $copy1, $copy1, $copy_s1, $copy_s1, $copy_s1;
174 # use Devel::Peek; Dump $number; Dump $copy1; Dump $copy_s1;
176 # unless ($bit) { use Devel::Peek; Dump $copy_s1; Dump $$copy_s; }
178 fail ("$process $copy1");
179 fail ("$process $copy1");