1 | // RUN: %clang_analyze_cc1 -analyzer-checker=unix.Malloc,core,alpha.core.CallAndMessageUnInitRefArg,debug.ExprInspection -analyzer-output=text -verify %s |
2 | |
3 | void clang_analyzer_warnIfReached(); |
4 | |
5 | // Passing uninitialized const data to function |
6 | #include "Inputs/system-header-simulator.h" |
7 | |
8 | typedef __typeof(sizeof(int)) size_t; |
9 | void *malloc(size_t); |
10 | void *valloc(size_t); |
11 | void free(void *); |
12 | |
13 | |
14 | void doStuff3(const int y){} |
15 | void doStuff2(int g){} |
16 | void doStuff_pointerToConstInt(const int *u){}; |
17 | void doStuff_arrayOfConstInt(const int a[]){}; |
18 | |
19 | void doStuff_constPointerToConstInt (int const * const u){}; |
20 | void doStuff_constPointerToConstPointerToConstInt(int const * const * const u){}; |
21 | void doStuff_pointerToConstPointerToConstInt(int const * const * u){}; |
22 | void doStuff_pointerToPointerToConstInt (int const **u){}; |
23 | void doStuff_constStaticSizedArray(const int a[static 10]) {} |
24 | void doStuff_variadic(const int *u, ...){}; |
25 | |
26 | void f_1(void) { |
27 | int t; |
28 | int* tp = &t; // expected-note {{'tp' initialized here}} |
29 | doStuff_pointerToConstInt(tp); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
30 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
31 | } |
32 | |
33 | void f_1_1(void) { |
34 | int t; |
35 | int* tp1 = &t; |
36 | int* tp2 = tp1; // expected-note {{'tp2' initialized here}} |
37 | doStuff_pointerToConstInt(tp2); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
38 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
39 | } |
40 | |
41 | |
42 | int *f_2_sub(int *p) { |
43 | return p; |
44 | } |
45 | |
46 | void f_2(void) { |
47 | int t; |
48 | int* p = f_2_sub(&t); |
49 | int* tp = p; // expected-note {{'tp' initialized here}} |
50 | doStuff_pointerToConstInt(tp); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
51 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
52 | } |
53 | |
54 | int z; |
55 | void f_3(void) { |
56 | doStuff_pointerToConstInt(&z); // no warning |
57 | } |
58 | |
59 | void f_4(void) { |
60 | int x=5; |
61 | doStuff_pointerToConstInt(&x); // no warning |
62 | } |
63 | |
64 | void f_5(void) { |
65 | int ta[5]; |
66 | int* tp = ta; // expected-note {{'tp' initialized here}} |
67 | doStuff_pointerToConstInt(tp); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
68 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
69 | } |
70 | |
71 | void f_5_1(void) { |
72 | int ta[5]; // expected-note {{'ta' initialized here}} |
73 | doStuff_pointerToConstInt(ta); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
74 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
75 | } |
76 | |
77 | void f_6(void) { |
78 | int ta[5] = {1,2,3,4,5}; |
79 | int* tp = ta; |
80 | doStuff_pointerToConstInt(tp); // no-warning |
81 | } |
82 | |
83 | void f_6_1(void) { |
84 | int ta[5] = {1,2,3,4,5}; |
85 | doStuff_pointerToConstInt(ta); // no-warning |
86 | } |
87 | |
88 | void f_7(void) { |
89 | int z; // expected-note {{'z' declared without an initial value}} |
90 | int y=z; // expected-warning {{Assigned value is garbage or undefined}} |
91 | // expected-note@-1 {{Assigned value is garbage or undefined}} |
92 | doStuff3(y); |
93 | } |
94 | |
95 | void f_8(void) { |
96 | int g; // expected-note {{'g' declared without an initial value}} |
97 | doStuff2(g); // expected-warning {{1st function call argument is an uninitialized value}} |
98 | // expected-note@-1 {{1st function call argument is an uninitialized value}} |
99 | } |
100 | |
101 | void f_9(void) { |
102 | int a[6]; |
103 | int const *ptau = a; // expected-note {{'ptau' initialized here}} |
104 | doStuff_arrayOfConstInt(ptau); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
105 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
106 | } |
107 | |
108 | void f_10(void) { |
109 | int a[6]; // expected-note {{'a' initialized here}} |
110 | doStuff_arrayOfConstInt(a); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
111 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
112 | } |
113 | |
114 | void f_11(void) { |
115 | int t[10]; //expected-note {{'t' initialized here}} |
116 | doStuff_constStaticSizedArray(t); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
117 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
118 | } |
119 | |
120 | void f_12(void) { |
121 | int t[10] = {0,1,2,3,4,5,6,7,8,9}; |
122 | doStuff_constStaticSizedArray(t); // no-warning |
123 | |
124 | } |
125 | |
126 | // https://bugs.llvm.org/show_bug.cgi?id=35419 |
127 | void f11_0(void) { |
128 | int x; // expected-note {{'x' declared without an initial value}} |
129 | x++; // expected-warning {{The expression is an uninitialized value. The computed value will also be garbage}} |
130 | // expected-note@-1 {{The expression is an uninitialized value. The computed value will also be garbage}} |
131 | clang_analyzer_warnIfReached(); // no-warning |
132 | } |
133 | void f11_1(void) { |
134 | int x; // expected-note {{'x' declared without an initial value}} |
135 | ++x; // expected-warning {{The expression is an uninitialized value. The computed value will also be garbage}} |
136 | // expected-note@-1 {{The expression is an uninitialized value. The computed value will also be garbage}} |
137 | clang_analyzer_warnIfReached(); // no-warning |
138 | } |
139 | void f11_2(void) { |
140 | int x; // expected-note {{'x' declared without an initial value}} |
141 | x--; // expected-warning {{The expression is an uninitialized value. The computed value will also be garbage}} |
142 | // expected-note@-1 {{The expression is an uninitialized value. The computed value will also be garbage}} |
143 | clang_analyzer_warnIfReached(); // no-warning |
144 | } |
145 | void f11_3(void) { |
146 | int x; // expected-note {{'x' declared without an initial value}} |
147 | --x; // expected-warning {{The expression is an uninitialized value. The computed value will also be garbage}} |
148 | // expected-note@-1 {{The expression is an uninitialized value. The computed value will also be garbage}} |
149 | clang_analyzer_warnIfReached(); // no-warning |
150 | } |
151 | |
152 | int f_malloc_1(void) { |
153 | int *ptr; |
154 | |
155 | ptr = (int *)malloc(sizeof(int)); // expected-note {{Value assigned to 'ptr'}} |
156 | |
157 | doStuff_pointerToConstInt(ptr); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
158 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
159 | free(ptr); |
160 | return 0; |
161 | } |
162 | |
163 | int f_malloc_2(void) { |
164 | int *ptr; |
165 | |
166 | ptr = (int *)malloc(sizeof(int)); |
167 | *ptr = 25; |
168 | |
169 | doStuff_pointerToConstInt(ptr); // no warning |
170 | free(ptr); |
171 | return 0; |
172 | } |
173 | |
174 | // uninit pointer, uninit val |
175 | void f_variadic_unp_unv(void) { |
176 | int t; |
177 | int v; |
178 | int* tp = &t; // expected-note {{'tp' initialized here}} |
179 | doStuff_variadic(tp,v); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
180 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
181 | } |
182 | // uninit pointer, init val |
183 | void f_variadic_unp_inv(void) { |
184 | int t; |
185 | int v = 3; |
186 | int* tp = &t; // expected-note {{'tp' initialized here}} |
187 | doStuff_variadic(tp,v); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
188 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
189 | } |
190 | |
191 | // init pointer, uninit val |
192 | void f_variadic_inp_unv(void) { |
193 | int t=5; |
194 | int v; // expected-note {{'v' declared without an initial value}} |
195 | int* tp = &t; |
196 | doStuff_variadic(tp,v);// expected-warning {{2nd function call argument is an uninitialized value}} |
197 | // expected-note@-1 {{2nd function call argument is an uninitialized value}} |
198 | } |
199 | |
200 | // init pointer, init val |
201 | void f_variadic_inp_inv(void) { |
202 | int t=5; |
203 | int v = 3; |
204 | int* tp = &t; |
205 | doStuff_variadic(tp,v); // no-warning |
206 | } |
207 | |
208 | // init pointer, init pointer |
209 | void f_variadic_inp_inp(void) { |
210 | int t=5; |
211 | int u=3; |
212 | int *vp = &u ; |
213 | int *tp = &t; |
214 | doStuff_variadic(tp,vp); // no-warning |
215 | } |
216 | |
217 | //uninit pointer, init pointer |
218 | void f_variadic_unp_inp(void) { |
219 | int t; |
220 | int u=3; |
221 | int *vp = &u ; |
222 | int *tp = &t; // expected-note {{'tp' initialized here}} |
223 | doStuff_variadic(tp,vp); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
224 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
225 | } |
226 | |
227 | //init pointer, uninit pointer |
228 | void f_variadic_inp_unp(void) { |
229 | int t=5; |
230 | int u; |
231 | int *vp = &u ; |
232 | int *tp = &t; |
233 | doStuff_variadic(tp,vp); // no-warning |
234 | } |
235 | |
236 | //uninit pointer, uninit pointer |
237 | void f_variadic_unp_unp(void) { |
238 | int t; |
239 | int u; |
240 | int *vp = &u ; |
241 | int *tp = &t; // expected-note {{'tp' initialized here}} |
242 | doStuff_variadic(tp,vp); // expected-warning {{1st function call argument is a pointer to uninitialized value}} |
243 | // expected-note@-1 {{1st function call argument is a pointer to uninitialized value}} |
244 | } |
245 | |