1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
--TEST--
GC 038: Garbage created by compound assignment operators (e.g. +=)
--INI--
zend.enable_gc = 1
--FILE--
<?php
function test_add() {
$x = new stdClass;
$x->x = $x;
try {
$x += 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "+=\t$n\n";
}
test_add();
function test_sub() {
$x = new stdClass;
$x->x = $x;
try {
$x -= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "-=\t$n\n";
}
test_sub();
function test_mul() {
$x = new stdClass;
$x->x = $x;
try {
$x *= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "*=\t$n\n";
}
test_mul();
function test_div() {
$x = new stdClass;
$x->x = $x;
try {
$x /= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "/=\t$n\n";
}
test_div();
function test_mod() {
$x = new stdClass;
$x->x = $x;
try {
$x %= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "%=\t$n\n";
}
test_mod();
function test_sl() {
$x = new stdClass;
$x->x = $x;
try {
$x <<= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "<<=\t$n\n";
}
test_sl();
function test_sr() {
$x = new stdClass;
$x->x = $x;
try {
$x >>= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo ">>=\t$n\n";
}
test_sr();
function test_or() {
$x = new stdClass;
$x->x = $x;
try {
$x |= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "|=\t$n\n";
}
test_or();
function test_and() {
$x = new stdClass;
$x->x = $x;
try {
$x &= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "&=\t$n\n";
}
test_and();
function test_xor() {
$x = new stdClass;
$x->x = $x;
try {
$x ^= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "^=\t$n\n";
}
test_xor();
function test_pow() {
$x = new stdClass;
$x->x = $x;
try {
$x **= 5;
} catch (TypeError $e) { unset($x); }
$n = gc_collect_cycles();
echo "**=\t$n\n";
}
test_pow();
class Y {
public $x;
function __toString() {
return "y";
}
}
function test_concat() {
$x = new Y;
$x->x = $x;
@$x .= "x";
$n = gc_collect_cycles();
echo ".=\t$n\n";
}
test_concat();
?>
--EXPECTF--
+= 1
-= 1
*= 1
/= 1
%= 1
<<= 1
>>= 1
|= 1
&= 1
^= 1
**= 1
.= 1
|
