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
17 require Config; import Config;
18 if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
19 print "1..0 # Skip: Storable was not built\n";
25 use Storable qw (dclone store retrieve freeze thaw nstore nfreeze);
29 my $max_uv_m1 = ~0 ^ 1;
30 # Express it in this way so as not to use any addition, as 5.6 maths would
31 # do this in NVs on 64 bit machines, and we're overflowing IVs so can't use
33 my $max_iv_p1 = $max_uv ^ ($max_uv >> 1);
35 my $temp = sprintf "%#x", ~0;
42 my $min_iv = do {use integer; -$max_iv-1}; # 2s complement assumption
44 my @processes = (["dclone", \&do_clone],
45 ["freeze/thaw", \&freeze_and_thaw],
46 ["nfreeze/thaw", \&nfreeze_and_thaw],
47 ["store/retrieve", \&store_and_retrieve],
48 ["nstore/retrieve", \&nstore_and_retrieve],
51 (# IV bounds of 8 bits
52 -1, 0, 1, -127, -128, -129, 42, 126, 127, 128, 129, 254, 255, 256, 257,
53 # IV bounds of 32 bits
54 -2147483647, -2147483648, -2147483649, 2147483646, 2147483647, 2147483648,
56 $min_iv, do {use integer; $min_iv + 1}, do {use integer; $max_iv - 1},
58 # UV bounds at 32 bits
59 0x7FFFFFFF, 0x80000000, 0x80000001, 0xFFFFFFFF, 0xDEADBEEF,
61 $max_iv_p1, $max_uv_m1, $max_uv, $lots_of_9C,
66 plan tests => @processes * @numbers * 5;
68 my $file = "integer.$$";
69 die "Temporary file '$file' already exists" if -e $file;
71 END { while (-f $file) {unlink $file or die "Can't unlink '$file': $!" }}
75 my $copy = eval {dclone $data};
76 is ($@, '', 'Should be no error dcloning');
77 ok (1, "dlcone is only 1 process, not 2");
83 my $frozen = eval {freeze $data};
84 is ($@, '', 'Should be no error freezing');
85 my $copy = eval {thaw $frozen};
86 is ($@, '', 'Should be no error thawing');
90 sub nfreeze_and_thaw {
92 my $frozen = eval {nfreeze $data};
93 is ($@, '', 'Should be no error nfreezing');
94 my $copy = eval {thaw $frozen};
95 is ($@, '', 'Should be no error thawing');
99 sub store_and_retrieve {
101 my $frozen = eval {store $data, $file};
102 is ($@, '', 'Should be no error storing');
103 my $copy = eval {retrieve $file};
104 is ($@, '', 'Should be no error retrieving');
108 sub nstore_and_retrieve {
110 my $frozen = eval {nstore $data, $file};
111 is ($@, '', 'Should be no error storing');
112 my $copy = eval {retrieve $file};
113 is ($@, '', 'Should be no error retrieving');
117 foreach (@processes) {
118 my ($process, $sub) = @$_;
119 foreach my $number (@numbers) {
120 # as $number is an alias into @numbers, we don't want any side effects of
121 # conversion macros affecting later runs, so pass a copy to Storable:
122 my $copy1 = my $copy2 = my $copy0 = $number;
123 my $copy_s = &$sub (\$copy0);
124 if (is (ref $copy_s, "SCALAR", "got back a scalar ref?")) {
125 # Test inside use integer to see if the bit pattern is identical
126 # and outside to see if the sign is right.
127 # On 5.8 we don't need this trickery anymore.
128 # We really do need 2 copies here, as conversion may have side effect
129 # bugs. In particular, I know that this happens:
130 # perl5.00503 -le '$a = "-2147483649"; $a & 0; print $a; print $a+1'
134 my $copy_s1 = my $copy_s2 = $$copy_s;
135 # On 5.8 can do this with a straight ==, due to the integer/float maths
136 # on 5.6 can't do this with
137 # my $eq = do {use integer; $copy_s1 == $copy1} && $copy_s1 == $copy1;
138 # because on builds with IV as long long it tickles bugs.
139 # (Uncomment it and the Devel::Peek line below to see the messed up
140 # state of the scalar, with PV showing the correct string for the
141 # number, and IV holding a bogus value which has been truncated to 32 bits
143 # So, check the bit patterns are identical, and check that the sign is the
144 # same. This works on all the versions in all the sizes.
145 # $eq = && (($copy_s1 <=> 0) == ($copy1 <=> 0));
146 # Split this into 2 tests, to cater for 5.005_03
148 # Aargh. Even this doesn't work because 5.6.x sends values with (same
149 # number of decimal digits as ~0 + 1) via atof. So ^ is getting strings
150 # cast to doubles cast to integers. And that truncates low order bits.
151 # my $bit = ok (($copy_s1 ^ $copy1) == 0, "$process $copy1 (bitpattern)");
153 # Oh well; at least the parser gets it right. :-)
154 my $copy_s3 = eval $copy_s1;
155 die "Was supposed to have number $copy_s3, got error $@"
156 unless defined $copy_s3;
157 my $bit = ok (($copy_s3 ^ $copy1) == 0, "$process $copy1 (bitpattern)");
158 # This is sick. 5.005_03 survives without the IV/UV flag, and somehow
159 # gets it right, providing you don't have side effects of conversion.
161 # $TODO = "pre 5.6 doesn't have flag to distinguish IV/UV"
162 # if $[ < 5.005_56 and $copy1 > $max_iv;
163 my $sign = ok (($copy_s2 <=> 0) == ($copy2 <=> 0),
164 "$process $copy1 (sign)");
166 unless ($bit and $sign) {
167 printf "# Passed in %s (%#x, %i)\n# got back '%s' (%#x, %i)\n",
168 $copy1, $copy1, $copy1, $copy_s1, $copy_s1, $copy_s1;
169 # use Devel::Peek; Dump $number; Dump $copy1; Dump $copy_s1;
171 # unless ($bit) { use Devel::Peek; Dump $copy_s1; Dump $$copy_s; }
173 fail ("$process $copy1");
174 fail ("$process $copy1");