blob: 8e95a6ebcb17259d1950f28c1fc4b0a5c72a94d6 (
plain)
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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
using System;
using System.Diagnostics.CodeAnalysis;
using Mono.Linker.Tests.Cases.Expectations.Assertions;
namespace Mono.Linker.Tests.Cases.DataFlow
{
[ExpectedNoWarnings]
public class LocalDataFlowKeptMembers
{
public static void Main ()
{
// These behave as expected
TestBranchMergeGoto ();
TestBranchMergeIf ();
TestBranchMergeIfElse ();
TestBranchMergeSwitch ();
// These are overly conservative (keep members on the wrong types)
// Only illustrate a few cases to keep it concise.
TestBranchGoto ();
TestBranchIf ();
TestBranchIfElse ();
}
[Kept]
public static void TestBranchMergeGoto ()
{
Type t = typeof (BranchMergeGotoType1);
if (String.Empty.Length == 0)
goto End;
t = typeof (BranchMergeGotoType2);
End:
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeGotoType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeGotoType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchMergeIf ()
{
Type t = typeof (BranchMergeIfType1);
if (String.Empty.Length == 0)
t = typeof (BranchMergeIfType2);
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeIfType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeIfType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchMergeIfElse ()
{
Type t = null;
if (String.Empty.Length == 0) {
t = typeof (BranchMergeIfElseType1);
} else {
t = typeof (BranchMergeIfElseType2);
}
RequirePublicFields (t); // keeps fields for both types
}
[Kept]
class BranchMergeIfElseType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeIfElseType2
{
[Kept]
public string field;
}
[Kept]
static int _switchOnField;
[Kept]
public static void TestBranchMergeSwitch ()
{
Type t = null;
switch (_switchOnField) {
case 0:
t = typeof (BranchMergeSwitchType0);
break;
case 1:
t = typeof (BranchMergeSwitchType1);
break;
case 2:
t = typeof (BranchMergeSwitchType2);
break;
case 3:
t = typeof (BranchMergeSwitchType3);
break;
}
RequirePublicFields (t); // keeps fields for all types
}
[Kept]
public static void TestBranchGoto ()
{
Type t = typeof (BranchGotoType1);
if (String.Empty.Length == 0)
goto End;
t = typeof (BranchGotoType2);
RequirePublicFields (t);
End:
return;
}
[Kept]
class BranchGotoType1
{
[Kept] // unnecessary
public string field;
}
[Kept]
class BranchGotoType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchIf ()
{
Type t = typeof (BranchIfType1);
if (String.Empty.Length == 0) {
t = typeof (BranchIfType2);
RequirePublicFields (t);
}
}
[Kept]
class BranchIfType1
{
[Kept] // unneccessary
public string field;
}
[Kept]
class BranchIfType2
{
[Kept]
public string field;
}
[Kept]
public static void TestBranchIfElse ()
{
Type t;
if (String.Empty.Length == 0) {
// because this branch *happens* to come first in IL, we will only see one value
t = typeof (BranchIfElseTypeWithMethods);
RequirePublicMethods (t); // this works
} else {
// because this branch *happens* to come second in IL, we will see the merged value for str
t = typeof (BranchIfElseTypeWithFields);
RequirePublicFields (t); // keeps field on BranchIfElseTypeWithMethods
}
}
[Kept]
class BranchIfElseTypeWithMethods
{
[Kept]
public void Method () { }
[Kept] // unnecessary
public string field;
}
[Kept]
class BranchIfElseTypeWithFields
{
public void Method () { }
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType0
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType1
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType2
{
[Kept]
public string field;
}
[Kept]
class BranchMergeSwitchType3
{
[Kept]
public string field;
}
[Kept]
public static void RequirePublicFields (
[KeptAttributeAttribute(typeof(DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields)]
Type type)
{
}
[Kept]
public static void RequirePublicMethods (
[KeptAttributeAttribute(typeof(DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods)]
Type type)
{
}
}
}
|