xref: /php-src/ext/bcmath/tests/gh16262.phpt (revision fd1dff98) 
1--TEST--
2GH-16262 Stack buffer overflow in ext/bcmath/libbcmath/src/div.c:459
3--EXTENSIONS--
4bcmath
5--INI--
6bcmath.scale=0
7--FILE--
8<?php
9$scales = [
10    null,
11    0,
12    1,
13    2,
14    3,
15    4,
16    5,
17];
18foreach ($scales as $scale) {
19    echo '========== scale: ', $scale ?? 'null', " ==========\n";
20    echo "1 / 1000:\n";
21    var_dump(
22        bcdiv('1', '1000', $scale),
23        (new BcMath\Number('1'))->div('1000', $scale),
24    );
25    echo "1 / 2000:\n";
26    var_dump(
27        bcdiv('1', '2000', $scale),
28        (new BcMath\Number('1'))->div('2000', $scale),
29    );
30    echo "\n";
31}
32?>
33--EXPECT--
34========== scale: null ==========
351 / 1000:
36string(1) "0"
37object(BcMath\Number)#2 (2) {
38  ["value"]=>
39  string(5) "0.001"
40  ["scale"]=>
41  int(3)
42}
431 / 2000:
44string(1) "0"
45object(BcMath\Number)#1 (2) {
46  ["value"]=>
47  string(6) "0.0005"
48  ["scale"]=>
49  int(4)
50}
51
52========== scale: 0 ==========
531 / 1000:
54string(1) "0"
55object(BcMath\Number)#2 (2) {
56  ["value"]=>
57  string(1) "0"
58  ["scale"]=>
59  int(0)
60}
611 / 2000:
62string(1) "0"
63object(BcMath\Number)#1 (2) {
64  ["value"]=>
65  string(1) "0"
66  ["scale"]=>
67  int(0)
68}
69
70========== scale: 1 ==========
711 / 1000:
72string(3) "0.0"
73object(BcMath\Number)#2 (2) {
74  ["value"]=>
75  string(3) "0.0"
76  ["scale"]=>
77  int(1)
78}
791 / 2000:
80string(3) "0.0"
81object(BcMath\Number)#1 (2) {
82  ["value"]=>
83  string(3) "0.0"
84  ["scale"]=>
85  int(1)
86}
87
88========== scale: 2 ==========
891 / 1000:
90string(4) "0.00"
91object(BcMath\Number)#2 (2) {
92  ["value"]=>
93  string(4) "0.00"
94  ["scale"]=>
95  int(2)
96}
971 / 2000:
98string(4) "0.00"
99object(BcMath\Number)#1 (2) {
100  ["value"]=>
101  string(4) "0.00"
102  ["scale"]=>
103  int(2)
104}
105
106========== scale: 3 ==========
1071 / 1000:
108string(5) "0.001"
109object(BcMath\Number)#2 (2) {
110  ["value"]=>
111  string(5) "0.001"
112  ["scale"]=>
113  int(3)
114}
1151 / 2000:
116string(5) "0.000"
117object(BcMath\Number)#1 (2) {
118  ["value"]=>
119  string(5) "0.000"
120  ["scale"]=>
121  int(3)
122}
123
124========== scale: 4 ==========
1251 / 1000:
126string(6) "0.0010"
127object(BcMath\Number)#2 (2) {
128  ["value"]=>
129  string(6) "0.0010"
130  ["scale"]=>
131  int(4)
132}
1331 / 2000:
134string(6) "0.0005"
135object(BcMath\Number)#1 (2) {
136  ["value"]=>
137  string(6) "0.0005"
138  ["scale"]=>
139  int(4)
140}
141
142========== scale: 5 ==========
1431 / 1000:
144string(7) "0.00100"
145object(BcMath\Number)#2 (2) {
146  ["value"]=>
147  string(7) "0.00100"
148  ["scale"]=>
149  int(5)
150}
1511 / 2000:
152string(7) "0.00050"
153object(BcMath\Number)#1 (2) {
154  ["value"]=>
155  string(7) "0.00050"
156  ["scale"]=>
157  int(5)
158}
159