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1 | #!perl -w |
2 | use strict; |
3 | |
4 | require './test.pl'; |
5 | |
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6 | plan (tests => 24); |
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7 | no warnings 'deprecated'; |
8 | |
9 | # Bug #27024 |
10 | { |
11 | # this used to segfault (because $[=1 is optimized away to a null block) |
12 | my $x; |
13 | $[ = 1 while $x; |
14 | pass('#27204'); |
15 | $[ = 0; # restore the original value for less side-effects |
16 | } |
17 | |
18 | # [perl #36313] perl -e "1for$[=0" crash |
19 | { |
20 | my $x; |
21 | $x = 1 for ($[) = 0; |
22 | pass('optimized assignment to $[ used to segfault in list context'); |
23 | if ($[ = 0) { $x = 1 } |
24 | pass('optimized assignment to $[ used to segfault in scalar context'); |
25 | $x = ($[=2.4); |
26 | is($x, 2, 'scalar assignment to $[ behaves like other variables'); |
27 | $x = (($[) = 0); |
28 | is($x, 1, 'list assignment to $[ behaves like other variables'); |
29 | $x = eval q{ ($[, $x) = (0) }; |
30 | like($@, qr/That use of \$\[ is unsupported/, |
31 | 'cannot assign to $[ in a list'); |
32 | eval q{ ($[) = (0, 1) }; |
33 | like($@, qr/That use of \$\[ is unsupported/, |
34 | 'cannot assign list of >1 elements to $['); |
35 | eval q{ ($[) = () }; |
36 | like($@, qr/That use of \$\[ is unsupported/, |
37 | 'cannot assign list of <1 elements to $['); |
38 | } |
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39 | |
40 | |
41 | { |
42 | $[ = 11; |
43 | cmp_ok($[ + 0, '==', 11, 'setting $[ affects $['); |
44 | our $t11; BEGIN { $t11 = $^H{'$['} } |
45 | cmp_ok($t11, '==', 11, 'setting $[ affects $^H{\'$[\'}'); |
46 | |
47 | BEGIN { $^H{'$['} = 22 } |
48 | cmp_ok($[ + 0, '==', 22, 'setting $^H{\'$\'} affects $['); |
49 | our $t22; BEGIN { $t22 = $^H{'$['} } |
50 | cmp_ok($t22, '==', 22, 'setting $^H{\'$[\'} affects $^H{\'$[\'}'); |
51 | |
52 | BEGIN { %^H = () } |
53 | my $val = do { |
54 | no warnings 'uninitialized'; |
55 | $[; |
56 | }; |
57 | cmp_ok($val, '==', 0, 'clearing %^H affects $['); |
58 | our $t0; BEGIN { $t0 = $^H{'$['} } |
59 | cmp_ok($t0, '==', 0, 'clearing %^H affects $^H{\'$[\'}'); |
60 | } |
61 | |
62 | { |
63 | $[ = 13; |
64 | BEGIN { $^H |= 0x04000000; $^H{foo} = "z"; } |
65 | |
66 | our($ri0, $rf0); BEGIN { $ri0 = $^H; $rf0 = $^H{foo}; } |
67 | cmp_ok($[ + 0, '==', 13, '$[ correct before require'); |
68 | ok($ri0 & 0x04000000, '$^H correct before require'); |
69 | is($rf0, "z", '$^H{foo} correct before require'); |
70 | |
71 | our($ra1, $ri1, $rf1, $rfe1); |
72 | BEGIN { require "op/array_base.aux"; } |
73 | cmp_ok($ra1, '==', 0, '$[ cleared for require'); |
74 | ok(!($ri1 & 0x04000000), '$^H cleared for require'); |
75 | is($rf1, undef, '$^H{foo} cleared for require'); |
76 | ok(!$rfe1, '$^H{foo} cleared for require'); |
77 | |
78 | our($ri2, $rf2); BEGIN { $ri2 = $^H; $rf2 = $^H{foo}; } |
79 | cmp_ok($[ + 0, '==', 13, '$[ correct after require'); |
80 | ok($ri2 & 0x04000000, '$^H correct after require'); |
81 | is($rf2, "z", '$^H{foo} correct after require'); |
82 | } |