1 | // Temporarily disabling the test, it failes the "system is over-constrained" |
2 | // assertion in *non* optimized builds. |
3 | // REQUIRES: rdar44992170 |
4 | // RUN: %clang_analyze_cc1 -fblocks -analyze -analyzer-checker=core,nullability,apiModeling,debug.ExprInspection -verify %s |
5 | |
6 | #include "Inputs/system-header-simulator-for-nullability.h" |
7 | |
8 | void clang_analyzer_warnIfReached(); |
9 | |
10 | NSString* _Nonnull trust_nonnull_framework_annotation() { |
11 | NSString* out = [NSString generateString]; |
12 | if (out) {} |
13 | return out; // no-warning |
14 | } |
15 | |
16 | NSString* _Nonnull trust_instancemsg_annotation(NSString* _Nonnull param) { |
17 | NSString* out = [param stringByAppendingString:@"string"]; |
18 | if (out) {} |
19 | return out; // no-warning |
20 | } |
21 | |
22 | NSString* _Nonnull distrust_instancemsg_noannotation(NSString* param) { |
23 | if (param) {} |
24 | NSString* out = [param stringByAppendingString:@"string"]; |
25 | if (out) {} |
26 | return out; // expected-warning{{}} |
27 | } |
28 | |
29 | NSString* _Nonnull trust_analyzer_knowledge(NSString* param) { |
30 | if (!param) |
31 | return @""; |
32 | NSString* out = [param stringByAppendingString:@"string"]; |
33 | if (out) {} |
34 | return out; // no-warning |
35 | } |
36 | |
37 | NSString* _Nonnull trust_assume_nonnull_macro() { |
38 | NSString* out = [NSString generateImplicitlyNonnullString]; |
39 | if (out) {} |
40 | return out; // no-warning |
41 | } |
42 | |
43 | NSString* _Nonnull distrust_without_annotation() { |
44 | NSString* out = [NSString generatePossiblyNullString]; |
45 | if (out) {} |
46 | return out; // expected-warning{{}} |
47 | } |
48 | |
49 | NSString* _Nonnull nonnull_please_trust_me(); |
50 | |
51 | NSString* _Nonnull distrust_local_nonnull_annotation() { |
52 | NSString* out = nonnull_please_trust_me(); |
53 | if (out) {} |
54 | return out; // expected-warning{{}} |
55 | } |
56 | |
57 | NSString* _Nonnull trust_c_function() { |
58 | NSString* out = getString(); |
59 | if (out) {}; |
60 | return out; // no-warning |
61 | } |
62 | |
63 | NSString* _Nonnull distrust_unannoted_function() { |
64 | NSString* out = getPossiblyNullString(); |
65 | if (out) {}; |
66 | return out; // expected-warning{{}} |
67 | } |
68 | |
69 | NSString * _Nonnull distrustProtocol(id<MyProtocol> o) { |
70 | NSString* out = [o getString]; |
71 | if (out) {}; |
72 | return out; // expected-warning{{}} |
73 | } |
74 | |
75 | // If the return value is non-nil, the index is non-nil. |
76 | NSString *_Nonnull retImpliesIndex(NSString *s, |
77 | NSDictionary *dic) { |
78 | id obj = dic[s]; |
79 | if (s) {} |
80 | if (obj) |
81 | return s; // no-warning |
82 | return @"foo"; |
83 | } |
84 | |
85 | NSString *_Nonnull retImpliesIndexOtherMethod(NSString *s, |
86 | NSDictionary *dic) { |
87 | id obj = [dic objectForKey:s]; |
88 | if (s) {} |
89 | if (obj) |
90 | return s; // no-warning |
91 | return @"foo"; |
92 | } |
93 | |
94 | NSString *_Nonnull retImpliesIndexOnRHS(NSString *s, |
95 | NSDictionary *dic) { |
96 | id obj = dic[s]; |
97 | if (s) {} |
98 | if (nil != obj) |
99 | return s; // no-warning |
100 | return @"foo"; |
101 | } |
102 | |
103 | NSString *_Nonnull retImpliesIndexReverseCheck(NSString *s, |
104 | NSDictionary *dic) { |
105 | id obj = dic[s]; |
106 | if (s) {} |
107 | if (!obj) |
108 | return @"foo"; |
109 | return s; // no-warning |
110 | } |
111 | |
112 | NSString *_Nonnull retImpliesIndexReverseCheckOnRHS(NSString *s, |
113 | NSDictionary *dic) { |
114 | id obj = dic[s]; |
115 | if (s) {} |
116 | if (nil == obj) |
117 | return @"foo"; |
118 | return s; // no-warning |
119 | } |
120 | |
121 | NSString *_Nonnull retImpliesIndexWrongBranch(NSString *s, |
122 | NSDictionary *dic) { |
123 | id obj = dic[s]; |
124 | if (s) {} |
125 | if (!obj) |
126 | return s; // expected-warning{{}} |
127 | return @"foo"; |
128 | } |
129 | |
130 | NSString *_Nonnull retImpliesIndexWrongBranchOnRHS(NSString *s, |
131 | NSDictionary *dic) { |
132 | id obj = dic[s]; |
133 | if (s) {} |
134 | if (nil == obj) |
135 | return s; // expected-warning{{}} |
136 | return @"foo"; |
137 | } |
138 | |
139 | // The return value could still be nil for a non-nil index. |
140 | NSDictionary *_Nonnull indexDoesNotImplyRet(NSString *s, |
141 | NSDictionary *dic) { |
142 | id obj = dic[s]; |
143 | if (obj) {} |
144 | if (s) |
145 | return obj; // expected-warning{{}} |
146 | return [[NSDictionary alloc] init]; |
147 | } |
148 | |
149 | // The return value could still be nil for a non-nil index. |
150 | NSDictionary *_Nonnull notIndexImpliesNotRet(NSString *s, |
151 | NSDictionary *dic) { |
152 | id obj = dic[s]; |
153 | if (!s) { |
154 | if (obj != nil) { |
155 | clang_analyzer_warnIfReached(); // no-warning |
156 | } |
157 | } |
158 | return [[NSDictionary alloc] init]; |
159 | } |
160 | |
161 | NSString *_Nonnull checkAssumeOnMutableDictionary(NSMutableDictionary *d, |
162 | NSString *k, |
163 | NSString *val) { |
164 | d[k] = val; |
165 | if (k) {} |
166 | return k; // no-warning |
167 | } |
168 | |
169 | NSString *_Nonnull checkAssumeOnMutableDictionaryOtherMethod(NSMutableDictionary *d, |
170 | NSString *k, |
171 | NSString *val) { |
172 | [d setObject:val forKey:k]; |
173 | if (k) {} |
174 | return k; // no-warning |
175 | } |
176 | |
177 | // Check that we don't crash when the added assumption is enough |
178 | // to make the state unfeasible. |
179 | @class DummyClass; |
180 | @interface DictionarySubclass : NSDictionary { |
181 | DummyClass *g; |
182 | DictionarySubclass *d; |
183 | } |
184 | @end |
185 | @implementation DictionarySubclass |
186 | - (id) objectForKey:(id)e { |
187 | if (e) {} |
188 | return d; |
189 | } |
190 | - (void) coder { |
191 | for (id e in g) { |
192 | id f = [self objectForKey:e]; |
193 | if (f) |
194 | (void)e; |
195 | } |
196 | } |
197 | @end |
198 | |