1 | // RUN: %clang_cc1 -fsyntax-only -Wall -Wuninitialized -Wno-unused-value -Wno-unused-lambda-capture -std=c++1z -verify %s |
2 | |
3 | // definitions for std::move |
4 | namespace std { |
5 | inline namespace foo { |
6 | template <class T> struct remove_reference { typedef T type; }; |
7 | template <class T> struct remove_reference<T&> { typedef T type; }; |
8 | template <class T> struct remove_reference<T&&> { typedef T type; }; |
9 | |
10 | template <class T> typename remove_reference<T>::type&& move(T&& t); |
11 | } |
12 | } |
13 | |
14 | int foo(int x); |
15 | int bar(int* x); |
16 | int boo(int& x); |
17 | int far(const int& x); |
18 | int moved(int&& x); |
19 | int &ref(int x); |
20 | |
21 | // Test self-references within initializers which are guaranteed to be |
22 | // uninitialized. |
23 | int a = a; // no-warning: used to signal intended lack of initialization. |
24 | int b = b + 1; // expected-warning {{variable 'b' is uninitialized when used within its own initialization}} |
25 | int c = (c + c); // expected-warning 2 {{variable 'c' is uninitialized when used within its own initialization}} |
26 | int e = static_cast<long>(e) + 1; // expected-warning {{variable 'e' is uninitialized when used within its own initialization}} |
27 | int f = foo(f); // expected-warning {{variable 'f' is uninitialized when used within its own initialization}} |
28 | |
29 | // These don't warn as they don't require the value. |
30 | int g = sizeof(g); |
31 | void* ptr = &ptr; |
32 | int h = bar(&h); |
33 | int i = boo(i); |
34 | int j = far(j); |
35 | int k = __alignof__(k); |
36 | |
37 | int l = k ? l : l; // expected-warning 2{{variable 'l' is uninitialized when used within its own initialization}} |
38 | int m = 1 + (k ? m : m); // expected-warning 2{{variable 'm' is uninitialized when used within its own initialization}} |
39 | int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} |
40 | int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} |
41 | const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} |
42 | int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} |
43 | int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} |
44 | int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} |
45 | int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} |
46 | int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} |
47 | int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} |
48 | int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} |
49 | int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} |
50 | int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} |
51 | int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} |
52 | int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} |
53 | int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} |
54 | |
55 | void test_stuff () { |
56 | int a = a; // no-warning: used to signal intended lack of initialization. |
57 | int b = b + 1; // expected-warning {{variable 'b' is uninitialized when used within its own initialization}} |
58 | int c = (c + c); // expected-warning {{variable 'c' is uninitialized when used within its own initialization}} |
59 | int d = ({ d + d ;}); // expected-warning {{variable 'd' is uninitialized when used within its own initialization}} |
60 | int e = static_cast<long>(e) + 1; // expected-warning {{variable 'e' is uninitialized when used within its own initialization}} |
61 | int f = foo(f); // expected-warning {{variable 'f' is uninitialized when used within its own initialization}} |
62 | |
63 | // These don't warn as they don't require the value. |
64 | int g = sizeof(g); |
65 | void* ptr = &ptr; |
66 | int h = bar(&h); |
67 | int i = boo(i); |
68 | int j = far(j); |
69 | int k = __alignof__(k); |
70 | |
71 | int l = k ? l : l; // expected-warning {{variable 'l' is uninitialized when used within its own initialization}} |
72 | int m = 1 + (k ? m : m); // expected-warning {{'m' is uninitialized when used within its own initialization}} |
73 | int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} |
74 | int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} |
75 | const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} |
76 | int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} |
77 | int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} |
78 | int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} |
79 | int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} |
80 | int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} |
81 | int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} |
82 | int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} |
83 | int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} |
84 | int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} |
85 | int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} |
86 | int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} |
87 | int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} |
88 | |
89 | for (;;) { |
90 | int a = a; // no-warning: used to signal intended lack of initialization. |
91 | int b = b + 1; // expected-warning {{variable 'b' is uninitialized when used within its own initialization}} |
92 | int c = (c + c); // expected-warning {{variable 'c' is uninitialized when used within its own initialization}} |
93 | int d = ({ d + d ;}); // expected-warning {{variable 'd' is uninitialized when used within its own initialization}} |
94 | int e = static_cast<long>(e) + 1; // expected-warning {{variable 'e' is uninitialized when used within its own initialization}} |
95 | int f = foo(f); // expected-warning {{variable 'f' is uninitialized when used within its own initialization}} |
96 | |
97 | // These don't warn as they don't require the value. |
98 | int g = sizeof(g); |
99 | void* ptr = &ptr; |
100 | int h = bar(&h); |
101 | int i = boo(i); |
102 | int j = far(j); |
103 | int k = __alignof__(k); |
104 | |
105 | int l = k ? l : l; // expected-warning {{variable 'l' is uninitialized when used within its own initialization}} |
106 | int m = 1 + (k ? m : m); // expected-warning {{'m' is uninitialized when used within its own initialization}} |
107 | int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} |
108 | int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} |
109 | const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} |
110 | int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} |
111 | int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} |
112 | int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} |
113 | int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} |
114 | int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} |
115 | int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} |
116 | int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} |
117 | int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} |
118 | int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} |
119 | int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} |
120 | int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} |
121 | int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} |
122 | |
123 | } |
124 | } |
125 | |
126 | void test_comma() { |
127 | int a; // expected-note {{initialize the variable 'a' to silence this warning}} |
128 | int b = (a, a ?: 2); // expected-warning {{variable 'a' is uninitialized when used here}} |
129 | int c = (a, a, b, c); // expected-warning {{variable 'c' is uninitialized when used within its own initialization}} |
130 | int d; // expected-note {{initialize the variable 'd' to silence this warning}} |
131 | int e = (foo(d), e, b); // expected-warning {{variable 'd' is uninitialized when used here}} |
132 | int f; // expected-note {{initialize the variable 'f' to silence this warning}} |
133 | f = f + 1, 2; // expected-warning {{variable 'f' is uninitialized when used here}} |
134 | int h; |
135 | int g = (h, g, 2); // no-warning: h, g are evaluated but not used. |
136 | } |
137 | |
138 | namespace member_ptr { |
139 | struct A { |
140 | int x; |
141 | int y; |
142 | A(int x) : x{x} {} |
143 | }; |
144 | |
145 | void test_member_ptr() { |
146 | int A::* px = &A::x; |
147 | A a{a.*px}; // expected-warning {{variable 'a' is uninitialized when used within its own initialization}} |
148 | A b = b; // expected-warning {{variable 'b' is uninitialized when used within its own initialization}} |
149 | } |
150 | } |
151 | |
152 | namespace const_ptr { |
153 | void foo(int *a); |
154 | void bar(const int *a); |
155 | void foobar(const int **a); |
156 | |
157 | void test_const_ptr() { |
158 | int a; |
159 | int b; // expected-note {{initialize the variable 'b' to silence this warning}} |
160 | foo(&a); |
161 | bar(&b); |
162 | b = a + b; // expected-warning {{variable 'b' is uninitialized when used here}} |
163 | int *ptr; //expected-note {{initialize the variable 'ptr' to silence this warning}} |
164 | const int *ptr2; |
165 | foo(ptr); // expected-warning {{variable 'ptr' is uninitialized when used here}} |
166 | foobar(&ptr2); |
167 | } |
168 | } |
169 | |
170 | // Also test similar constructs in a field's initializer. |
171 | struct S { |
172 | int x; |
173 | int y; |
174 | const int z = 5; |
175 | void *ptr; |
176 | |
177 | S(bool (*)[1]) : x(x) {} // expected-warning {{field 'x' is uninitialized when used here}} |
178 | S(bool (*)[2]) : x(x + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} |
179 | S(bool (*)[3]) : x(x + x) {} // expected-warning 2{{field 'x' is uninitialized when used here}} |
180 | S(bool (*)[4]) : x(static_cast<long>(x) + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} |
181 | S(bool (*)[5]) : x(foo(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} |
182 | |
183 | // These don't actually require the value of x and so shouldn't warn. |
184 | S(char (*)[1]) : x(sizeof(x)) {} // rdar://8610363 |
185 | S(char (*)[2]) : ptr(&ptr) {} |
186 | S(char (*)[3]) : x(bar(&x)) {} |
187 | S(char (*)[4]) : x(boo(x)) {} |
188 | S(char (*)[5]) : x(far(x)) {} |
189 | S(char (*)[6]) : x(__alignof__(x)) {} |
190 | |
191 | S(int (*)[1]) : x(0), y(x ? y : y) {} // expected-warning 2{{field 'y' is uninitialized when used here}} |
192 | S(int (*)[2]) : x(0), y(1 + (x ? y : y)) {} // expected-warning 2{{field 'y' is uninitialized when used here}} |
193 | S(int (*)[3]) : x(-x) {} // expected-warning {{field 'x' is uninitialized when used here}} |
194 | S(int (*)[4]) : x(std::move(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} |
195 | S(int (*)[5]) : z(std::move(z)) {} // expected-warning {{field 'z' is uninitialized when used here}} |
196 | S(int (*)[6]) : x(moved(std::move(x))) {} // expected-warning {{field 'x' is uninitialized when used here}} |
197 | S(int (*)[7]) : x(0), y(std::move((x ? x : (18, y)))) {} // expected-warning {{field 'y' is uninitialized when used here}} |
198 | S(int (*)[8]) : x(0), y(x ?: y) {} // expected-warning {{field 'y' is uninitialized when used here}} |
199 | S(int (*)[9]) : x(0), y(y ?: x) {} // expected-warning {{field 'y' is uninitialized when used here}} |
200 | S(int (*)[10]) : x(0), y((foo(y), x)) {} // expected-warning {{field 'y' is uninitialized when used here}} |
201 | S(int (*)[11]) : x(0), y(x += y) {} // expected-warning {{field 'y' is uninitialized when used here}} |
202 | S(int (*)[12]) : x(x += 10) {} // expected-warning {{field 'x' is uninitialized when used here}} |
203 | S(int (*)[13]) : x(x++) {} // expected-warning {{field 'x' is uninitialized when used here}} |
204 | S(int (*)[14]) : x(0), y(((x ? (y, x) : (77, y))++, sizeof(y))) {} // expected-warning {{field 'y' is uninitialized when used here}} |
205 | S(int (*)[15]) : x(++ref(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} |
206 | S(int (*)[16]) : x((ref(x) += 10)) {} // expected-warning {{field 'x' is uninitialized when used here}} |
207 | S(int (*)[17]) : x(0), y(y ? x : x) {} // expected-warning {{field 'y' is uninitialized when used here}} |
208 | }; |
209 | |
210 | // Test self-references with record types. |
211 | class A { |
212 | // Non-POD class. |
213 | public: |
214 | enum count { ONE, TWO, THREE }; |
215 | int num; |
216 | static int count; |
217 | int get() const { return num; } |
218 | int get2() { return num; } |
219 | int set(int x) { num = x; return num; } |
220 | static int zero() { return 0; } |
221 | |
222 | A() {} |
223 | A(A const &a) {} |
224 | A(int x) {} |
225 | A(int *x) {} |
226 | A(A *a) {} |
227 | A(A &&a) {} |
228 | ~A(); |
229 | bool operator!(); |
230 | bool operator!=(const A&); |
231 | }; |
232 | |
233 | bool operator!=(int, const A&); |
234 | |
235 | A getA() { return A(); } |
236 | A getA(int x) { return A(); } |
237 | A getA(A* a) { return A(); } |
238 | A getA(A a) { return A(); } |
239 | A moveA(A&& a) { return A(); } |
240 | A const_refA(const A& a) { return A(); } |
241 | |
242 | void setupA(bool x) { |
243 | A a1; |
244 | a1.set(a1.get()); |
245 | A a2(a1.get()); |
246 | A a3(a1); |
247 | A a4(&a4); |
248 | A a5(a5.zero()); |
249 | A a6(a6.ONE); |
250 | A a7 = getA(); |
251 | A a8 = getA(a8.TWO); |
252 | A a9 = getA(&a9); |
253 | A a10(a10.count); |
254 | |
255 | A a11(a11); // expected-warning {{variable 'a11' is uninitialized when used within its own initialization}} |
256 | A a12(a12.get()); // expected-warning {{variable 'a12' is uninitialized when used within its own initialization}} |
257 | A a13(a13.num); // expected-warning {{variable 'a13' is uninitialized when used within its own initialization}} |
258 | A a14 = A(a14); // expected-warning {{variable 'a14' is uninitialized when used within its own initialization}} |
259 | A a15 = getA(a15.num); // expected-warning {{variable 'a15' is uninitialized when used within its own initialization}} |
260 | A a16(&a16.num); // expected-warning {{variable 'a16' is uninitialized when used within its own initialization}} |
261 | A a17(a17.get2()); // expected-warning {{variable 'a17' is uninitialized when used within its own initialization}} |
262 | A a18 = x ? a18 : a17; // expected-warning {{variable 'a18' is uninitialized when used within its own initialization}} |
263 | A a19 = getA(x ? a19 : a17); // expected-warning {{variable 'a19' is uninitialized when used within its own initialization}} |
264 | A a20{a20}; // expected-warning {{variable 'a20' is uninitialized when used within its own initialization}} |
265 | A a21 = {a21}; // expected-warning {{variable 'a21' is uninitialized when used within its own initialization}} |
266 | |
267 | // FIXME: Make the local uninitialized warning consistent with the global |
268 | // uninitialized checking. |
269 | A *a22 = new A(a22->count); // expected-warning {{variable 'a22' is uninitialized when used within its own initialization}} |
270 | A *a23 = new A(a23->ONE); // expected-warning {{variable 'a23' is uninitialized when used within its own initialization}} |
271 | A *a24 = new A(a24->TWO); // expected-warning {{variable 'a24' is uninitialized when used within its own initialization}} |
272 | A *a25 = new A(a25->zero()); // expected-warning {{variable 'a25' is uninitialized when used within its own initialization}} |
273 | |
274 | A *a26 = new A(a26->get()); // expected-warning {{variable 'a26' is uninitialized when used within its own initialization}} |
275 | A *a27 = new A(a27->get2()); // expected-warning {{variable 'a27' is uninitialized when used within its own initialization}} |
276 | A *a28 = new A(a28->num); // expected-warning {{variable 'a28' is uninitialized when used within its own initialization}} |
277 | |
278 | const A a29(a29); // expected-warning {{variable 'a29' is uninitialized when used within its own initialization}} |
279 | const A a30 = a30; // expected-warning {{variable 'a30' is uninitialized when used within its own initialization}} |
280 | |
281 | A a31 = std::move(a31); // expected-warning {{variable 'a31' is uninitialized when used within its own initialization}} |
282 | A a32 = moveA(std::move(a32)); // expected-warning {{variable 'a32' is uninitialized when used within its own initialization}} |
283 | A a33 = A(std::move(a33)); // expected-warning {{variable 'a33' is uninitialized when used within its own initialization}} |
284 | A a34(std::move(a34)); // expected-warning {{variable 'a34' is uninitialized when used within its own initialization}} |
285 | A a35 = std::move(x ? a34 : (37, a35)); // expected-warning {{variable 'a35' is uninitialized when used within its own initialization}} |
286 | |
287 | A a36 = const_refA(a36); |
288 | A a37(const_refA(a37)); |
289 | |
290 | A a38({a38}); // expected-warning {{variable 'a38' is uninitialized when used within its own initialization}} |
291 | A a39 = {a39}; // expected-warning {{variable 'a39' is uninitialized when used within its own initialization}} |
292 | A a40 = A({a40}); // expected-warning {{variable 'a40' is uninitialized when used within its own initialization}} |
293 | |
294 | A a41 = !a41; // expected-warning {{variable 'a41' is uninitialized when used within its own initialization}} |
295 | A a42 = !(a42); // expected-warning {{variable 'a42' is uninitialized when used within its own initialization}} |
296 | A a43 = a43 != a42; // expected-warning {{variable 'a43' is uninitialized when used within its own initialization}} |
297 | A a44 = a43 != a44; // expected-warning {{variable 'a44' is uninitialized when used within its own initialization}} |
298 | A a45 = a45 != a45; // expected-warning 2{{variable 'a45' is uninitialized when used within its own initialization}} |
299 | A a46 = 0 != a46; // expected-warning {{variable 'a46' is uninitialized when used within its own initialization}} |
300 | |
301 | A a47(a47.set(a47.num)); // expected-warning 2{{variable 'a47' is uninitialized when used within its own initialization}} |
302 | A a48(a47.set(a48.num)); // expected-warning {{variable 'a48' is uninitialized when used within its own initialization}} |
303 | A a49(a47.set(a48.num)); |
304 | } |
305 | |
306 | bool cond; |
307 | |
308 | A a1; |
309 | A a2(a1.get()); |
310 | A a3(a1); |
311 | A a4(&a4); |
312 | A a5(a5.zero()); |
313 | A a6(a6.ONE); |
314 | A a7 = getA(); |
315 | A a8 = getA(a8.TWO); |
316 | A a9 = getA(&a9); |
317 | A a10(a10.count); |
318 | |
319 | A a11(a11); // expected-warning {{variable 'a11' is uninitialized when used within its own initialization}} |
320 | A a12(a12.get()); // expected-warning {{variable 'a12' is uninitialized when used within its own initialization}} |
321 | A a13(a13.num); // expected-warning {{variable 'a13' is uninitialized when used within its own initialization}} |
322 | A a14 = A(a14); // expected-warning {{variable 'a14' is uninitialized when used within its own initialization}} |
323 | A a15 = getA(a15.num); // expected-warning {{variable 'a15' is uninitialized when used within its own initialization}} |
324 | A a16(&a16.num); // expected-warning {{variable 'a16' is uninitialized when used within its own initialization}} |
325 | A a17(a17.get2()); // expected-warning {{variable 'a17' is uninitialized when used within its own initialization}} |
326 | A a18 = cond ? a18 : a17; // expected-warning {{variable 'a18' is uninitialized when used within its own initialization}} |
327 | A a19 = getA(cond ? a19 : a17); // expected-warning {{variable 'a19' is uninitialized when used within its own initialization}} |
328 | A a20{a20}; // expected-warning {{variable 'a20' is uninitialized when used within its own initialization}} |
329 | A a21 = {a21}; // expected-warning {{variable 'a21' is uninitialized when used within its own initialization}} |
330 | |
331 | A *a22 = new A(a22->count); |
332 | A *a23 = new A(a23->ONE); |
333 | A *a24 = new A(a24->TWO); |
334 | A *a25 = new A(a25->zero()); |
335 | |
336 | A *a26 = new A(a26->get()); // expected-warning {{variable 'a26' is uninitialized when used within its own initialization}} |
337 | A *a27 = new A(a27->get2()); // expected-warning {{variable 'a27' is uninitialized when used within its own initialization}} |
338 | A *a28 = new A(a28->num); // expected-warning {{variable 'a28' is uninitialized when used within its own initialization}} |
339 | |
340 | const A a29(a29); // expected-warning {{variable 'a29' is uninitialized when used within its own initialization}} |
341 | const A a30 = a30; // expected-warning {{variable 'a30' is uninitialized when used within its own initialization}} |
342 | |
343 | A a31 = std::move(a31); // expected-warning {{variable 'a31' is uninitialized when used within its own initialization}} |
344 | A a32 = moveA(std::move(a32)); // expected-warning {{variable 'a32' is uninitialized when used within its own initialization}} |
345 | A a33 = A(std::move(a33)); // expected-warning {{variable 'a33' is uninitialized when used within its own initialization}} |
346 | A a34(std::move(a34)); // expected-warning {{variable 'a34' is uninitialized when used within its own initialization}} |
347 | A a35 = std::move(x ? a34 : (37, a35)); // expected-warning {{variable 'a35' is uninitialized when used within its own initialization}} |
348 | |
349 | A a36 = const_refA(a36); |
350 | A a37(const_refA(a37)); |
351 | |
352 | A a38({a38}); // expected-warning {{variable 'a38' is uninitialized when used within its own initialization}} |
353 | A a39 = {a39}; // expected-warning {{variable 'a39' is uninitialized when used within its own initialization}} |
354 | A a40 = A({a40}); // expected-warning {{variable 'a40' is uninitialized when used within its own initialization}} |
355 | |
356 | A a41 = !a41; // expected-warning {{variable 'a41' is uninitialized when used within its own initialization}} |
357 | A a42 = !(a42); // expected-warning {{variable 'a42' is uninitialized when used within its own initialization}} |
358 | A a43 = a43 != a42; // expected-warning {{variable 'a43' is uninitialized when used within its own initialization}} |
359 | A a44 = a43 != a44; // expected-warning {{variable 'a44' is uninitialized when used within its own initialization}} |
360 | A a45 = a45 != a45; // expected-warning 2{{variable 'a45' is uninitialized when used within its own initialization}} |
361 | |
362 | A a46 = 0 != a46; // expected-warning {{variable 'a46' is uninitialized when used within its own initialization}} |
363 | |
364 | A a47(a47.set(a47.num)); // expected-warning 2{{variable 'a47' is uninitialized when used within its own initialization}} |
365 | A a48(a47.set(a48.num)); // expected-warning {{variable 'a48' is uninitialized when used within its own initialization}} |
366 | A a49(a47.set(a48.num)); |
367 | |
368 | class T { |
369 | A a, a2; |
370 | const A c_a; |
371 | A* ptr_a; |
372 | |
373 | T() {} |
374 | T(bool (*)[1]) : a() {} |
375 | T(bool (*)[2]) : a2(a.get()) {} |
376 | T(bool (*)[3]) : a2(a) {} |
377 | T(bool (*)[4]) : a(&a) {} |
378 | T(bool (*)[5]) : a(a.zero()) {} |
379 | T(bool (*)[6]) : a(a.ONE) {} |
380 | T(bool (*)[7]) : a(getA()) {} |
381 | T(bool (*)[8]) : a2(getA(a.TWO)) {} |
382 | T(bool (*)[9]) : a(getA(&a)) {} |
383 | T(bool (*)[10]) : a(a.count) {} |
384 | |
385 | T(bool (*)[11]) : a(a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
386 | T(bool (*)[12]) : a(a.get()) {} // expected-warning {{field 'a' is uninitialized when used here}} |
387 | T(bool (*)[13]) : a(a.num) {} // expected-warning {{field 'a' is uninitialized when used here}} |
388 | T(bool (*)[14]) : a(A(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
389 | T(bool (*)[15]) : a(getA(a.num)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
390 | T(bool (*)[16]) : a(&a.num) {} // expected-warning {{field 'a' is uninitialized when used here}} |
391 | T(bool (*)[17]) : a(a.get2()) {} // expected-warning {{field 'a' is uninitialized when used here}} |
392 | T(bool (*)[18]) : a2(cond ? a2 : a) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
393 | T(bool (*)[19]) : a2(cond ? a2 : a) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
394 | T(bool (*)[20]) : a{a} {} // expected-warning {{field 'a' is uninitialized when used here}} |
395 | T(bool (*)[21]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} |
396 | |
397 | T(bool (*)[22]) : ptr_a(new A(ptr_a->count)) {} |
398 | T(bool (*)[23]) : ptr_a(new A(ptr_a->ONE)) {} |
399 | T(bool (*)[24]) : ptr_a(new A(ptr_a->TWO)) {} |
400 | T(bool (*)[25]) : ptr_a(new A(ptr_a->zero())) {} |
401 | |
402 | T(bool (*)[26]) : ptr_a(new A(ptr_a->get())) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} |
403 | T(bool (*)[27]) : ptr_a(new A(ptr_a->get2())) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} |
404 | T(bool (*)[28]) : ptr_a(new A(ptr_a->num)) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} |
405 | |
406 | T(bool (*)[29]) : c_a(c_a) {} // expected-warning {{field 'c_a' is uninitialized when used here}} |
407 | T(bool (*)[30]) : c_a(A(c_a)) {} // expected-warning {{field 'c_a' is uninitialized when used here}} |
408 | |
409 | T(bool (*)[31]) : a(std::move(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
410 | T(bool (*)[32]) : a(moveA(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} |
411 | T(bool (*)[33]) : a(A(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} |
412 | T(bool (*)[34]) : a(A(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} |
413 | T(bool (*)[35]) : a2(std::move(x ? a : (37, a2))) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
414 | |
415 | T(bool (*)[36]) : a(const_refA(a)) {} |
416 | T(bool (*)[37]) : a(A(const_refA(a))) {} |
417 | |
418 | T(bool (*)[38]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} |
419 | T(bool (*)[39]) : a{a} {} // expected-warning {{field 'a' is uninitialized when used here}} |
420 | T(bool (*)[40]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} |
421 | |
422 | T(bool (*)[41]) : a(!a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
423 | T(bool (*)[42]) : a(!(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
424 | T(bool (*)[43]) : a(), a2(a2 != a) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
425 | T(bool (*)[44]) : a(), a2(a != a2) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
426 | T(bool (*)[45]) : a(a != a) {} // expected-warning 2{{field 'a' is uninitialized when used here}} |
427 | T(bool (*)[46]) : a(0 != a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
428 | |
429 | T(bool (*)[47]) : a2(a2.set(a2.num)) {} // expected-warning 2{{field 'a2' is uninitialized when used here}} |
430 | T(bool (*)[48]) : a2(a.set(a2.num)) {} // expected-warning {{field 'a2' is uninitialized when used here}} |
431 | T(bool (*)[49]) : a2(a.set(a.num)) {} |
432 | |
433 | }; |
434 | |
435 | struct B { |
436 | // POD struct. |
437 | int x; |
438 | int *y; |
439 | }; |
440 | |
441 | B getB() { return B(); }; |
442 | B getB(int x) { return B(); }; |
443 | B getB(int *x) { return B(); }; |
444 | B getB(B *b) { return B(); }; |
445 | B moveB(B &&b) { return B(); }; |
446 | |
447 | B* getPtrB() { return 0; }; |
448 | B* getPtrB(int x) { return 0; }; |
449 | B* getPtrB(int *x) { return 0; }; |
450 | B* getPtrB(B **b) { return 0; }; |
451 | |
452 | void setupB(bool x) { |
453 | B b1; |
454 | B b2(b1); |
455 | B b3 = { 5, &b3.x }; |
456 | B b4 = getB(); |
457 | B b5 = getB(&b5); |
458 | B b6 = getB(&b6.x); |
459 | |
460 | // Silence unused warning |
461 | (void) b2; |
462 | (void) b4; |
463 | |
464 | B b7(b7); // expected-warning {{variable 'b7' is uninitialized when used within its own initialization}} |
465 | B b8 = getB(b8.x); // expected-warning {{variable 'b8' is uninitialized when used within its own initialization}} |
466 | B b9 = getB(b9.y); // expected-warning {{variable 'b9' is uninitialized when used within its own initialization}} |
467 | B b10 = getB(-b10.x); // expected-warning {{variable 'b10' is uninitialized when used within its own initialization}} |
468 | |
469 | B* b11 = 0; |
470 | B* b12(b11); |
471 | B* b13 = getPtrB(); |
472 | B* b14 = getPtrB(&b14); |
473 | |
474 | (void) b12; |
475 | (void) b13; |
476 | |
477 | B* b15 = getPtrB(b15->x); // expected-warning {{variable 'b15' is uninitialized when used within its own initialization}} |
478 | B* b16 = getPtrB(b16->y); // expected-warning {{variable 'b16' is uninitialized when used within its own initialization}} |
479 | |
480 | B b17 = { b17.x = 5, b17.y = 0 }; |
481 | B b18 = { b18.x + 1, b18.y }; // expected-warning 2{{variable 'b18' is uninitialized when used within its own initialization}} |
482 | |
483 | const B b19 = b19; // expected-warning {{variable 'b19' is uninitialized when used within its own initialization}} |
484 | const B b20(b20); // expected-warning {{variable 'b20' is uninitialized when used within its own initialization}} |
485 | |
486 | B b21 = std::move(b21); // expected-warning {{variable 'b21' is uninitialized when used within its own initialization}} |
487 | B b22 = moveB(std::move(b22)); // expected-warning {{variable 'b22' is uninitialized when used within its own initialization}} |
488 | B b23 = B(std::move(b23)); // expected-warning {{variable 'b23' is uninitialized when used within its own initialization}} |
489 | B b24 = std::move(x ? b23 : (18, b24)); // expected-warning {{variable 'b24' is uninitialized when used within its own initialization}} |
490 | } |
491 | |
492 | B b1; |
493 | B b2(b1); |
494 | B b3 = { 5, &b3.x }; |
495 | B b4 = getB(); |
496 | B b5 = getB(&b5); |
497 | B b6 = getB(&b6.x); |
498 | |
499 | B b7(b7); // expected-warning {{variable 'b7' is uninitialized when used within its own initialization}} |
500 | B b8 = getB(b8.x); // expected-warning {{variable 'b8' is uninitialized when used within its own initialization}} |
501 | B b9 = getB(b9.y); // expected-warning {{variable 'b9' is uninitialized when used within its own initialization}} |
502 | B b10 = getB(-b10.x); // expected-warning {{variable 'b10' is uninitialized when used within its own initialization}} |
503 | |
504 | B* b11 = 0; |
505 | B* b12(b11); |
506 | B* b13 = getPtrB(); |
507 | B* b14 = getPtrB(&b14); |
508 | |
509 | B* b15 = getPtrB(b15->x); // expected-warning {{variable 'b15' is uninitialized when used within its own initialization}} |
510 | B* b16 = getPtrB(b16->y); // expected-warning {{variable 'b16' is uninitialized when used within its own initialization}} |
511 | |
512 | B b17 = { b17.x = 5, b17.y = 0 }; |
513 | B b18 = { b18.x + 1, b18.y }; // expected-warning 2{{variable 'b18' is uninitialized when used within its own initialization}} |
514 | |
515 | const B b19 = b19; // expected-warning {{variable 'b19' is uninitialized when used within its own initialization}} |
516 | const B b20(b20); // expected-warning {{variable 'b20' is uninitialized when used within its own initialization}} |
517 | |
518 | B b21 = std::move(b21); // expected-warning {{variable 'b21' is uninitialized when used within its own initialization}} |
519 | B b22 = moveB(std::move(b22)); // expected-warning {{variable 'b22' is uninitialized when used within its own initialization}} |
520 | B b23 = B(std::move(b23)); // expected-warning {{variable 'b23' is uninitialized when used within its own initialization}} |
521 | B b24 = std::move(x ? b23 : (18, b24)); // expected-warning {{variable 'b24' is uninitialized when used within its own initialization}} |
522 | |
523 | class U { |
524 | B b1, b2; |
525 | B *ptr1, *ptr2; |
526 | const B constb = {}; |
527 | |
528 | U() {} |
529 | U(bool (*)[1]) : b1() {} |
530 | U(bool (*)[2]) : b2(b1) {} |
531 | U(bool (*)[3]) : b1{ 5, &b1.x } {} |
532 | U(bool (*)[4]) : b1(getB()) {} |
533 | U(bool (*)[5]) : b1(getB(&b1)) {} |
534 | U(bool (*)[6]) : b1(getB(&b1.x)) {} |
535 | |
536 | U(bool (*)[7]) : b1(b1) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
537 | U(bool (*)[8]) : b1(getB(b1.x)) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
538 | U(bool (*)[9]) : b1(getB(b1.y)) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
539 | U(bool (*)[10]) : b1(getB(-b1.x)) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
540 | |
541 | U(bool (*)[11]) : ptr1(0) {} |
542 | U(bool (*)[12]) : ptr1(0), ptr2(ptr1) {} |
543 | U(bool (*)[13]) : ptr1(getPtrB()) {} |
544 | U(bool (*)[14]) : ptr1(getPtrB(&ptr1)) {} |
545 | |
546 | U(bool (*)[15]) : ptr1(getPtrB(ptr1->x)) {} // expected-warning {{field 'ptr1' is uninitialized when used here}} |
547 | U(bool (*)[16]) : ptr2(getPtrB(ptr2->y)) {} // expected-warning {{field 'ptr2' is uninitialized when used here}} |
548 | |
549 | U(bool (*)[17]) : b1 { b1.x = 5, b1.y = 0 } {} |
550 | U(bool (*)[18]) : b1 { b1.x + 1, b1.y } {} // expected-warning 2{{field 'b1' is uninitialized when used here}} |
551 | |
552 | U(bool (*)[19]) : constb(constb) {} // expected-warning {{field 'constb' is uninitialized when used here}} |
553 | U(bool (*)[20]) : constb(B(constb)) {} // expected-warning {{field 'constb' is uninitialized when used here}} |
554 | |
555 | U(bool (*)[21]) : b1(std::move(b1)) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
556 | U(bool (*)[22]) : b1(moveB(std::move(b1))) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
557 | U(bool (*)[23]) : b1(B(std::move(b1))) {} // expected-warning {{field 'b1' is uninitialized when used here}} |
558 | U(bool (*)[24]) : b2(std::move(x ? b1 : (18, b2))) {} // expected-warning {{field 'b2' is uninitialized when used here}} |
559 | }; |
560 | |
561 | struct C { char a[100], *e; } car = { .e = car.a }; |
562 | |
563 | // <rdar://problem/10398199> |
564 | namespace rdar10398199 { |
565 | class FooBase { protected: ~FooBase() {} }; |
566 | class Foo : public FooBase { |
567 | public: |
568 | operator int&() const; |
569 | }; |
570 | void stuff(); |
571 | template <typename T> class FooImpl : public Foo { |
572 | T val; |
573 | public: |
574 | FooImpl(const T &x) : val(x) {} |
575 | ~FooImpl() { stuff(); } |
576 | }; |
577 | |
578 | template <typename T> FooImpl<T> makeFoo(const T& x) { |
579 | return FooImpl<T>(x); |
580 | } |
581 | |
582 | void test() { |
583 | const Foo &x = makeFoo(42); |
584 | const int&y = makeFoo(42u); |
585 | (void)x; |
586 | (void)y; |
587 | }; |
588 | } |
589 | |
590 | // PR 12325 - this was a false uninitialized value warning due to |
591 | // a broken CFG. |
592 | int pr12325(int params) { |
593 | int x = ({ |
594 | while (false) |
595 | ; |
596 | int _v = params; |
597 | if (false) |
598 | ; |
599 | _v; // no-warning |
600 | }); |
601 | return x; |
602 | } |
603 | |
604 | // Test lambda expressions with -Wuninitialized |
605 | int test_lambda() { |
606 | auto f1 = [] (int x, int y) { int z; return x + y + z; }; // expected-warning{{variable 'z' is uninitialized when used here}} expected-note {{initialize the variable 'z' to silence this warning}} |
607 | return f1(1, 2); |
608 | } |
609 | |
610 | namespace { |
611 | struct A { |
612 | enum { A1 }; |
613 | static int A2() {return 5;} |
614 | int A3; |
615 | int A4() { return 5;} |
616 | }; |
617 | |
618 | struct B { |
619 | A a; |
620 | }; |
621 | |
622 | struct C { |
623 | C() {} |
624 | C(int x) {} |
625 | static A a; |
626 | B b; |
627 | }; |
628 | A C::a = A(); |
629 | |
630 | // Accessing non-static members will give a warning. |
631 | struct D { |
632 | C c; |
633 | D(char (*)[1]) : c(c.b.a.A1) {} |
634 | D(char (*)[2]) : c(c.b.a.A2()) {} |
635 | D(char (*)[3]) : c(c.b.a.A3) {} // expected-warning {{field 'c' is uninitialized when used here}} |
636 | D(char (*)[4]) : c(c.b.a.A4()) {} // expected-warning {{field 'c' is uninitialized when used here}} |
637 | |
638 | // c::a is static, so it is already initialized |
639 | D(char (*)[5]) : c(c.a.A1) {} |
640 | D(char (*)[6]) : c(c.a.A2()) {} |
641 | D(char (*)[7]) : c(c.a.A3) {} |
642 | D(char (*)[8]) : c(c.a.A4()) {} |
643 | }; |
644 | |
645 | struct E { |
646 | int b = 1; |
647 | int c = 1; |
648 | int a; // This field needs to be last to prevent the cross field |
649 | // uninitialized warning. |
650 | E(char (*)[1]) : a(a ? b : c) {} // expected-warning {{field 'a' is uninitialized when used here}} |
651 | E(char (*)[2]) : a(b ? a : a) {} // expected-warning 2{{field 'a' is uninitialized when used here}} |
652 | E(char (*)[3]) : a(b ? (a) : c) {} // expected-warning {{field 'a' is uninitialized when used here}} |
653 | E(char (*)[4]) : a(b ? c : (a+c)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
654 | E(char (*)[5]) : a(b ? c : b) {} |
655 | |
656 | E(char (*)[6]) : a(a ?: a) {} // expected-warning 2{{field 'a' is uninitialized when used here}} |
657 | E(char (*)[7]) : a(b ?: a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
658 | E(char (*)[8]) : a(a ?: c) {} // expected-warning {{field 'a' is uninitialized when used here}} |
659 | E(char (*)[9]) : a(b ?: c) {} |
660 | |
661 | E(char (*)[10]) : a((a, a, b)) {} |
662 | E(char (*)[11]) : a((c + a, a + 1, b)) {} // expected-warning 2{{field 'a' is uninitialized when used here}} |
663 | E(char (*)[12]) : a((b + c, c, a)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
664 | E(char (*)[13]) : a((a, a, a, a)) {} // expected-warning {{field 'a' is uninitialized when used here}} |
665 | E(char (*)[14]) : a((b, c, c)) {} |
666 | E(char (*)[15]) : a(b ?: a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
667 | E(char (*)[16]) : a(a ?: b) {} // expected-warning {{field 'a' is uninitialized when used here}} |
668 | }; |
669 | |
670 | struct F { |
671 | int a; |
672 | F* f; |
673 | F(int) {} |
674 | F() {} |
675 | }; |
676 | |
677 | int F::*ptr = &F::a; |
678 | F* F::*f_ptr = &F::f; |
679 | struct G { |
680 | F f1, f2; |
681 | F *f3, *f4; |
682 | G(char (*)[1]) : f1(f1) {} // expected-warning {{field 'f1' is uninitialized when used here}} |
683 | G(char (*)[2]) : f2(f1) {} |
684 | G(char (*)[3]) : f2(F()) {} |
685 | |
686 | G(char (*)[4]) : f1(f1.*ptr) {} // expected-warning {{field 'f1' is uninitialized when used here}} |
687 | G(char (*)[5]) : f2(f1.*ptr) {} |
688 | |
689 | G(char (*)[6]) : f3(f3) {} // expected-warning {{field 'f3' is uninitialized when used here}} |
690 | G(char (*)[7]) : f3(f3->*f_ptr) {} // expected-warning {{field 'f3' is uninitialized when used here}} |
691 | G(char (*)[8]) : f3(new F(f3->*ptr)) {} // expected-warning {{field 'f3' is uninitialized when used here}} |
692 | }; |
693 | |
694 | struct H { |
695 | H() : a(a) {} // expected-warning {{field 'a' is uninitialized when used here}} |
696 | const A a; |
697 | }; |
698 | } |
699 | |
700 | namespace statics { |
701 | static int a = a; // no-warning: used to signal intended lack of initialization. |
702 | static int b = b + 1; // expected-warning {{variable 'b' is uninitialized when used within its own initialization}} |
703 | static int c = (c + c); // expected-warning 2{{variable 'c' is uninitialized when used within its own initialization}} |
704 | static int e = static_cast<long>(e) + 1; // expected-warning {{variable 'e' is uninitialized when used within its own initialization}} |
705 | static int f = foo(f); // expected-warning {{variable 'f' is uninitialized when used within its own initialization}} |
706 | |
707 | // These don't warn as they don't require the value. |
708 | static int g = sizeof(g); |
709 | int gg = g; // Silence unneeded warning |
710 | static void* ptr = &ptr; |
711 | static int h = bar(&h); |
712 | static int i = boo(i); |
713 | static int j = far(j); |
714 | static int k = __alignof__(k); |
715 | |
716 | static int l = k ? l : l; // expected-warning 2{{variable 'l' is uninitialized when used within its own initialization}} |
717 | static int m = 1 + (k ? m : m); // expected-warning 2{{variable 'm' is uninitialized when used within its own initialization}} |
718 | static int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} |
719 | static int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} |
720 | static const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} |
721 | static int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} |
722 | static int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} |
723 | static int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} |
724 | static int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} |
725 | static int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} |
726 | static int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} |
727 | static int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} |
728 | static int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} |
729 | static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} |
730 | static int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} |
731 | static int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} |
732 | static int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} |
733 | |
734 | |
735 | void test() { |
736 | static int a = a; // no-warning: used to signal intended lack of initialization. |
737 | static int b = b + 1; // expected-warning {{static variable 'b' is suspiciously used within its own initialization}} |
738 | static int c = (c + c); // expected-warning 2{{static variable 'c' is suspiciously used within its own initialization}} |
739 | static int d = ({ d + d ;}); // expected-warning 2{{static variable 'd' is suspiciously used within its own initialization}} |
740 | static int e = static_cast<long>(e) + 1; // expected-warning {{static variable 'e' is suspiciously used within its own initialization}} |
741 | static int f = foo(f); // expected-warning {{static variable 'f' is suspiciously used within its own initialization}} |
742 | |
743 | // These don't warn as they don't require the value. |
744 | static int g = sizeof(g); |
745 | static void* ptr = &ptr; |
746 | static int h = bar(&h); |
747 | static int i = boo(i); |
748 | static int j = far(j); |
749 | static int k = __alignof__(k); |
750 | |
751 | static int l = k ? l : l; // expected-warning 2{{static variable 'l' is suspiciously used within its own initialization}} |
752 | static int m = 1 + (k ? m : m); // expected-warning 2{{static variable 'm' is suspiciously used within its own initialization}} |
753 | static int n = -n; // expected-warning {{static variable 'n' is suspiciously used within its own initialization}} |
754 | static int o = std::move(o); // expected-warning {{static variable 'o' is suspiciously used within its own initialization}} |
755 | static const int p = std::move(p); // expected-warning {{static variable 'p' is suspiciously used within its own initialization}} |
756 | static int q = moved(std::move(q)); // expected-warning {{static variable 'q' is suspiciously used within its own initialization}} |
757 | static int r = std::move((p ? q : (18, r))); // expected-warning {{static variable 'r' is suspiciously used within its own initialization}} |
758 | static int s = r ?: s; // expected-warning {{static variable 's' is suspiciously used within its own initialization}} |
759 | static int t = t ?: s; // expected-warning {{static variable 't' is suspiciously used within its own initialization}} |
760 | static int u = (foo(u), s); // expected-warning {{static variable 'u' is suspiciously used within its own initialization}} |
761 | static int v = (u += v); // expected-warning {{static variable 'v' is suspiciously used within its own initialization}} |
762 | static int w = (w += 10); // expected-warning {{static variable 'w' is suspiciously used within its own initialization}} |
763 | static int x = x++; // expected-warning {{static variable 'x' is suspiciously used within its own initialization}} |
764 | static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{static variable 'y' is suspiciously used within its own initialization}} |
765 | static int z = ++ref(z); // expected-warning {{static variable 'z' is suspiciously used within its own initialization}} |
766 | static int aa = (ref(aa) += 10); // expected-warning {{static variable 'aa' is suspiciously used within its own initialization}} |
767 | static int bb = bb ? x : y; // expected-warning {{static variable 'bb' is suspiciously used within its own initialization}} |
768 | |
769 | for (;;) { |
770 | static int a = a; // no-warning: used to signal intended lack of initialization. |
771 | static int b = b + 1; // expected-warning {{static variable 'b' is suspiciously used within its own initialization}} |
772 | static int c = (c + c); // expected-warning 2{{static variable 'c' is suspiciously used within its own initialization}} |
773 | static int d = ({ d + d ;}); // expected-warning 2{{static variable 'd' is suspiciously used within its own initialization}} |
774 | static int e = static_cast<long>(e) + 1; // expected-warning {{static variable 'e' is suspiciously used within its own initialization}} |
775 | static int f = foo(f); // expected-warning {{static variable 'f' is suspiciously used within its own initialization}} |
776 | |
777 | // These don't warn as they don't require the value. |
778 | static int g = sizeof(g); |
779 | static void* ptr = &ptr; |
780 | static int h = bar(&h); |
781 | static int i = boo(i); |
782 | static int j = far(j); |
783 | static int k = __alignof__(k); |
784 | |
785 | static int l = k ? l : l; // expected-warning 2{{static variable 'l' is suspiciously used within its own initialization}} |
786 | static int m = 1 + (k ? m : m); // expected-warning 2{{static variable 'm' is suspiciously used within its own initialization}} |
787 | static int n = -n; // expected-warning {{static variable 'n' is suspiciously used within its own initialization}} |
788 | static int o = std::move(o); // expected-warning {{static variable 'o' is suspiciously used within its own initialization}} |
789 | static const int p = std::move(p); // expected-warning {{static variable 'p' is suspiciously used within its own initialization}} |
790 | static int q = moved(std::move(q)); // expected-warning {{static variable 'q' is suspiciously used within its own initialization}} |
791 | static int r = std::move((p ? q : (18, r))); // expected-warning {{static variable 'r' is suspiciously used within its own initialization}} |
792 | static int s = r ?: s; // expected-warning {{static variable 's' is suspiciously used within its own initialization}} |
793 | static int t = t ?: s; // expected-warning {{static variable 't' is suspiciously used within its own initialization}} |
794 | static int u = (foo(u), s); // expected-warning {{static variable 'u' is suspiciously used within its own initialization}} |
795 | static int v = (u += v); // expected-warning {{static variable 'v' is suspiciously used within its own initialization}} |
796 | static int w = (w += 10); // expected-warning {{static variable 'w' is suspiciously used within its own initialization}} |
797 | static int x = x++; // expected-warning {{static variable 'x' is suspiciously used within its own initialization}} |
798 | static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{static variable 'y' is suspiciously used within its own initialization}} |
799 | static int z = ++ref(z); // expected-warning {{static variable 'z' is suspiciously used within its own initialization}} |
800 | static int aa = (ref(aa) += 10); // expected-warning {{static variable 'aa' is suspiciously used within its own initialization}} |
801 | static int bb = bb ? x : y; // expected-warning {{static variable 'bb' is suspiciously used within its own initialization}} |
802 | } |
803 | } |
804 | } |
805 | |
806 | namespace in_class_initializers { |
807 | struct S { |
808 | S() : a(a + 1) {} // expected-warning{{field 'a' is uninitialized when used here}} |
809 | int a = 42; // Note: because a is in a member initializer list, this initialization is ignored. |
810 | }; |
811 | |
812 | struct T { |
813 | T() : b(a + 1) {} // No-warning. |
814 | int a = 42; |
815 | int b; |
816 | }; |
817 | |
818 | struct U { |
819 | U() : a(b + 1), b(a + 1) {} // expected-warning{{field 'b' is uninitialized when used here}} |
820 | int a = 42; // Note: because a and b are in the member initializer list, these initializers are ignored. |
821 | int b = 1; |
822 | }; |
823 | } |
824 | |
825 | namespace references { |
826 | int &a = a; // expected-warning{{reference 'a' is not yet bound to a value when used within its own initialization}} |
827 | int &b(b); // expected-warning{{reference 'b' is not yet bound to a value when used within its own initialization}} |
828 | int &c = a ? b : c; // expected-warning{{reference 'c' is not yet bound to a value when used within its own initialization}} |
829 | int &d{d}; // expected-warning{{reference 'd' is not yet bound to a value when used within its own initialization}} |
830 | int &e = d ?: e; // expected-warning{{reference 'e' is not yet bound to a value when used within its own initialization}} |
831 | int &f = f ?: d; // expected-warning{{reference 'f' is not yet bound to a value when used within its own initialization}} |
832 | |
833 | int &return_ref1(int); |
834 | int &return_ref2(int&); |
835 | |
836 | int &g = return_ref1(g); // expected-warning{{reference 'g' is not yet bound to a value when used within its own initialization}} |
837 | int &h = return_ref2(h); // expected-warning{{reference 'h' is not yet bound to a value when used within its own initialization}} |
838 | |
839 | struct S { |
840 | S() : a(a) {} // expected-warning{{reference 'a' is not yet bound to a value when used here}} |
841 | int &a; |
842 | }; |
843 | |
844 | void test() { |
845 | int &a = a; // expected-warning{{reference 'a' is not yet bound to a value when used within its own initialization}} |
846 | int &b(b); // expected-warning{{reference 'b' is not yet bound to a value when used within its own initialization}} |
847 | int &c = a ? b : c; // expected-warning{{reference 'c' is not yet bound to a value when used within its own initialization}} |
848 | int &d{d}; // expected-warning{{reference 'd' is not yet bound to a value when used within its own initialization}} |
849 | } |
850 | |
851 | struct T { |
852 | T() // expected-note{{during field initialization in this constructor}} |
853 | : a(b), b(a) {} // expected-warning{{reference 'b' is not yet bound to a value when used here}} |
854 | int &a, &b; |
855 | int &c = c; // expected-warning{{reference 'c' is not yet bound to a value when used here}} |
856 | }; |
857 | |
858 | int x; |
859 | struct U { |
860 | U() : b(a) {} // No-warning. |
861 | int &a = x; |
862 | int &b; |
863 | }; |
864 | } |
865 | |
866 | namespace operators { |
867 | struct A { |
868 | A(bool); |
869 | bool operator==(A); |
870 | }; |
871 | |
872 | A makeA(); |
873 | |
874 | A a1 = a1 = makeA(); // expected-warning{{variable 'a1' is uninitialized when used within its own initialization}} |
875 | A a2 = a2 == a1; // expected-warning{{variable 'a2' is uninitialized when used within its own initialization}} |
876 | A a3 = a2 == a3; // expected-warning{{variable 'a3' is uninitialized when used within its own initialization}} |
877 | |
878 | int x = x = 5; |
879 | } |
880 | |
881 | namespace lambdas { |
882 | struct A { |
883 | template<typename T> A(T) {} |
884 | int x; |
885 | }; |
886 | A a0([] { return a0.x; }); // ok |
887 | void f() { |
888 | A a1([=] { // expected-warning{{variable 'a1' is uninitialized when used within its own initialization}} |
889 | return a1.x; |
890 | }); |
891 | A a2([&] { return a2.x; }); // ok |
892 | } |
893 | } |
894 | |
895 | namespace record_fields { |
896 | bool x; |
897 | struct A { |
898 | A() {} |
899 | A get(); |
900 | static A num(); |
901 | static A copy(A); |
902 | static A something(A&); |
903 | }; |
904 | |
905 | A ref(A&); |
906 | A const_ref(const A&); |
907 | A pointer(A*); |
908 | A normal(A); |
909 | A rref(A&&); |
910 | |
911 | struct B { |
912 | A a; |
913 | B(char (*)[1]) : a(a) {} // expected-warning {{uninitialized}} |
914 | B(char (*)[2]) : a(a.get()) {} // expected-warning {{uninitialized}} |
915 | B(char (*)[3]) : a(a.num()) {} |
916 | B(char (*)[4]) : a(a.copy(a)) {} // expected-warning {{uninitialized}} |
917 | B(char (*)[5]) : a(a.something(a)) {} |
918 | B(char (*)[6]) : a(ref(a)) {} |
919 | B(char (*)[7]) : a(const_ref(a)) {} |
920 | B(char (*)[8]) : a(pointer(&a)) {} |
921 | B(char (*)[9]) : a(normal(a)) {} // expected-warning {{uninitialized}} |
922 | B(char (*)[10]) : a(std::move(a)) {} // expected-warning {{uninitialized}} |
923 | B(char (*)[11]) : a(A(std::move(a))) {} // expected-warning {{uninitialized}} |
924 | B(char (*)[12]) : a(rref(std::move(a))) {} // expected-warning {{uninitialized}} |
925 | B(char (*)[13]) : a(std::move(x ? a : (25, a))) {} // expected-warning 2{{uninitialized}} |
926 | }; |
927 | struct C { |
928 | C() {} // expected-note9{{in this constructor}} |
929 | A a1 = a1; // expected-warning {{uninitialized}} |
930 | A a2 = a2.get(); // expected-warning {{uninitialized}} |
931 | A a3 = a3.num(); |
932 | A a4 = a4.copy(a4); // expected-warning {{uninitialized}} |
933 | A a5 = a5.something(a5); |
934 | A a6 = ref(a6); |
935 | A a7 = const_ref(a7); |
936 | A a8 = pointer(&a8); |
937 | A a9 = normal(a9); // expected-warning {{uninitialized}} |
938 | const A a10 = a10; // expected-warning {{uninitialized}} |
939 | A a11 = std::move(a11); // expected-warning {{uninitialized}} |
940 | A a12 = A(std::move(a12)); // expected-warning {{uninitialized}} |
941 | A a13 = rref(std::move(a13)); // expected-warning {{uninitialized}} |
942 | A a14 = std::move(x ? a13 : (22, a14)); // expected-warning {{uninitialized}} |
943 | }; |
944 | struct D { // expected-note9{{in the implicit default constructor}} |
945 | A a1 = a1; // expected-warning {{uninitialized}} |
946 | A a2 = a2.get(); // expected-warning {{uninitialized}} |
947 | A a3 = a3.num(); |
948 | A a4 = a4.copy(a4); // expected-warning {{uninitialized}} |
949 | A a5 = a5.something(a5); |
950 | A a6 = ref(a6); |
951 | A a7 = const_ref(a7); |
952 | A a8 = pointer(&a8); |
953 | A a9 = normal(a9); // expected-warning {{uninitialized}} |
954 | const A a10 = a10; // expected-warning {{uninitialized}} |
955 | A a11 = std::move(a11); // expected-warning {{uninitialized}} |
956 | A a12 = A(std::move(a12)); // expected-warning {{uninitialized}} |
957 | A a13 = rref(std::move(a13)); // expected-warning {{uninitialized}} |
958 | A a14 = std::move(x ? a13 : (22, a14)); // expected-warning {{uninitialized}} |
959 | }; |
960 | D d; // expected-note {{in implicit default constructor for 'record_fields::D' first required here}} |
961 | struct E { |
962 | A a1 = a1; |
963 | A a2 = a2.get(); |
964 | A a3 = a3.num(); |
965 | A a4 = a4.copy(a4); |
966 | A a5 = a5.something(a5); |
967 | A a6 = ref(a6); |
968 | A a7 = const_ref(a7); |
969 | A a8 = pointer(&a8); |
970 | A a9 = normal(a9); |
971 | const A a10 = a10; |
972 | A a11 = std::move(a11); |
973 | A a12 = A(std::move(a12)); |
974 | A a13 = rref(std::move(a13)); |
975 | A a14 = std::move(x ? a13 : (22, a14)); |
976 | }; |
977 | } |
978 | |
979 | namespace cross_field_warnings { |
980 | struct A { |
981 | int a, b; |
982 | A() {} |
983 | A(char (*)[1]) : b(a) {} // expected-warning{{field 'a' is uninitialized when used here}} |
984 | A(char (*)[2]) : a(b) {} // expected-warning{{field 'b' is uninitialized when used here}} |
985 | }; |
986 | |
987 | struct B { |
988 | int a = b; // expected-warning{{field 'b' is uninitialized when used here}} |
989 | int b; |
990 | B() {} // expected-note{{during field initialization in this constructor}} |
991 | }; |
992 | |
993 | struct C { |
994 | int a; |
995 | int b = a; // expected-warning{{field 'a' is uninitialized when used here}} |
996 | C(char (*)[1]) : a(5) {} |
997 | C(char (*)[2]) {} // expected-note{{during field initialization in this constructor}} |
998 | }; |
999 | |
1000 | struct D { |
1001 | int a; |
1002 | int &b; |
1003 | int &c = a; |
1004 | int d = b; |
1005 | D() : b(a) {} |
1006 | }; |
1007 | |
1008 | struct E { |
1009 | int a; |
1010 | int get(); |
1011 | static int num(); |
1012 | E() {} |
1013 | E(int) {} |
1014 | }; |
1015 | |
1016 | struct F { |
1017 | int a; |
1018 | E e; |
1019 | int b; |
1020 | F(char (*)[1]) : a(e.get()) {} // expected-warning{{field 'e' is uninitialized when used here}} |
1021 | F(char (*)[2]) : a(e.num()) {} |
1022 | F(char (*)[3]) : e(a) {} // expected-warning{{field 'a' is uninitialized when used here}} |
1023 | F(char (*)[4]) : a(4), e(a) {} |
1024 | F(char (*)[5]) : e(b) {} // expected-warning{{field 'b' is uninitialized when used here}} |
1025 | F(char (*)[6]) : e(b), b(4) {} // expected-warning{{field 'b' is uninitialized when used here}} |
1026 | }; |
1027 | |
1028 | struct G { |
1029 | G(const A&) {}; |
1030 | }; |
1031 | |
1032 | struct H { |
1033 | A a1; |
1034 | G g; |
1035 | A a2; |
1036 | H() : g(a1) {} |
1037 | H(int) : g(a2) {} |
1038 | }; |
1039 | |
1040 | struct I { |
1041 | I(int*) {} |
1042 | }; |
1043 | |
1044 | struct J : public I { |
1045 | int *a; |
1046 | int *b; |
1047 | int c; |
1048 | J() : I((a = new int(5))), b(a), c(*a) {} |
1049 | }; |
1050 | |
1051 | struct K { |
1052 | int a = (b = 5); |
1053 | int b = b + 5; |
1054 | }; |
1055 | |
1056 | struct L { |
1057 | int a = (b = 5); |
1058 | int b = b + 5; // expected-warning{{field 'b' is uninitialized when used here}} |
1059 | L() : a(5) {} // expected-note{{during field initialization in this constructor}} |
1060 | }; |
1061 | |
1062 | struct M { }; |
1063 | |
1064 | struct N : public M { |
1065 | int a; |
1066 | int b; |
1067 | N() : b(a) { } // expected-warning{{field 'a' is uninitialized when used here}} |
1068 | }; |
1069 | |
1070 | struct O { |
1071 | int x = 42; |
1072 | int get() { return x; } |
1073 | }; |
1074 | |
1075 | struct P { |
1076 | O o; |
1077 | int x = o.get(); |
1078 | P() : x(o.get()) { } |
1079 | }; |
1080 | |
1081 | struct Q { |
1082 | int a; |
1083 | int b; |
1084 | int &c; |
1085 | Q() : |
1086 | a(c = 5), // expected-warning{{reference 'c' is not yet bound to a value when used here}} |
1087 | b(c), // expected-warning{{reference 'c' is not yet bound to a value when used here}} |
1088 | c(a) {} |
1089 | }; |
1090 | |
1091 | struct R { |
1092 | int a; |
1093 | int b; |
1094 | int c; |
1095 | int d = a + b + c; |
1096 | R() : a(c = 5), b(c), c(a) {} |
1097 | }; |
1098 | |
1099 | // FIXME: Use the CFG-based analysis to give a sometimes uninitialized |
1100 | // warning on y. |
1101 | struct T { |
1102 | int x; |
1103 | int y; |
1104 | T(bool b) |
1105 | : x(b ? (y = 5) : (1 + y)), // expected-warning{{field 'y' is uninitialized when used here}} |
1106 | y(y + 1) {} |
1107 | T(int b) |
1108 | : x(!b ? (1 + y) : (y = 5)), // expected-warning{{field 'y' is uninitialized when used here}} |
1109 | y(y + 1) {} |
1110 | }; |
1111 | |
1112 | } |
1113 | |
1114 | namespace base_class { |
1115 | struct A { |
1116 | A (int) {} |
1117 | }; |
1118 | |
1119 | struct B : public A { |
1120 | int x; |
1121 | B() : A(x) {} // expected-warning{{field 'x' is uninitialized when used here}} |
1122 | }; |
1123 | |
1124 | struct C : public A { |
1125 | int x; |
1126 | int y; |
1127 | C() : A(y = 4), x(y) {} |
1128 | }; |
1129 | } |
1130 | |
1131 | namespace delegating_constructor { |
1132 | struct A { |
1133 | A(int); |
1134 | A(int&, int); |
1135 | |
1136 | A(char (*)[1]) : A(x) {} |
1137 | // expected-warning@-1 {{field 'x' is uninitialized when used here}} |
1138 | A(char (*)[2]) : A(x, x) {} |
1139 | // expected-warning@-1 {{field 'x' is uninitialized when used here}} |
1140 | |
1141 | A(char (*)[3]) : A(x, 0) {} |
1142 | |
1143 | int x; |
1144 | }; |
1145 | } |
1146 | |
1147 | namespace init_list { |
1148 | int num = 5; |
1149 | struct A { int i1, i2; }; |
1150 | struct B { A a1, a2; }; |
1151 | |
1152 | A a1{1,2}; |
1153 | A a2{a2.i1 + 2}; // expected-warning{{uninitialized}} |
1154 | A a3 = {a3.i1 + 2}; // expected-warning{{uninitialized}} |
1155 | A a4 = A{a4.i2 + 2}; // expected-warning{{uninitialized}} |
1156 | |
1157 | B b1 = { {}, {} }; |
1158 | B b2 = { {}, b2.a1 }; |
1159 | B b3 = { b3.a1 }; // expected-warning{{uninitialized}} |
1160 | B b4 = { {}, b4.a2} ; // expected-warning{{uninitialized}} |
1161 | B b5 = { b5.a2 }; // expected-warning{{uninitialized}} |
1162 | |
1163 | B b6 = { {b6.a1.i1} }; // expected-warning{{uninitialized}} |
1164 | B b7 = { {0, b7.a1.i1} }; |
1165 | B b8 = { {}, {b8.a1.i1} }; |
1166 | B b9 = { {}, {0, b9.a1.i1} }; |
1167 | |
1168 | B b10 = { {b10.a1.i2} }; // expected-warning{{uninitialized}} |
1169 | B b11 = { {0, b11.a1.i2} }; // expected-warning{{uninitialized}} |
1170 | B b12 = { {}, {b12.a1.i2} }; |
1171 | B b13 = { {}, {0, b13.a1.i2} }; |
1172 | |
1173 | B b14 = { {b14.a2.i1} }; // expected-warning{{uninitialized}} |
1174 | B b15 = { {0, b15.a2.i1} }; // expected-warning{{uninitialized}} |
1175 | B b16 = { {}, {b16.a2.i1} }; // expected-warning{{uninitialized}} |
1176 | B b17 = { {}, {0, b17.a2.i1} }; |
1177 | |
1178 | B b18 = { {b18.a2.i2} }; // expected-warning{{uninitialized}} |
1179 | B b19 = { {0, b19.a2.i2} }; // expected-warning{{uninitialized}} |
1180 | B b20 = { {}, {b20.a2.i2} }; // expected-warning{{uninitialized}} |
1181 | B b21 = { {}, {0, b21.a2.i2} }; // expected-warning{{uninitialized}} |
1182 | |
1183 | B b22 = { {b18.a2.i2 + 5} }; |
1184 | |
1185 | struct C {int a; int& b; int c; }; |
1186 | C c1 = { 0, num, 0 }; |
1187 | C c2 = { 1, num, c2.b }; |
1188 | C c3 = { c3.b, num }; // expected-warning{{uninitialized}} |
1189 | C c4 = { 0, c4.b, 0 }; // expected-warning{{uninitialized}} |
1190 | C c5 = { 0, c5.c, 0 }; |
1191 | C c6 = { c6.b, num, 0 }; // expected-warning{{uninitialized}} |
1192 | C c7 = { 0, c7.a, 0 }; |
1193 | |
1194 | struct D {int &a; int &b; }; |
1195 | D d1 = { num, num }; |
1196 | D d2 = { num, d2.a }; |
1197 | D d3 = { d3.b, num }; // expected-warning{{uninitialized}} |
1198 | |
1199 | // Same as above in member initializer form. |
1200 | struct Awrapper { |
1201 | A a1{1,2}; |
1202 | A a2{a2.i1 + 2}; // expected-warning{{uninitialized}} |
1203 | A a3 = {a3.i1 + 2}; // expected-warning{{uninitialized}} |
1204 | A a4 = A{a4.i2 + 2}; // expected-warning{{uninitialized}} |
1205 | Awrapper() {} // expected-note 3{{in this constructor}} |
1206 | Awrapper(int) : |
1207 | a1{1,2}, |
1208 | a2{a2.i1 + 2}, // expected-warning{{uninitialized}} |
1209 | a3{a3.i1 + 2}, // expected-warning{{uninitialized}} |
1210 | a4{a4.i2 + 2} // expected-warning{{uninitialized}} |
1211 | {} |
1212 | }; |
1213 | |
1214 | struct Bwrapper { |
1215 | B b1 = { {}, {} }; |
1216 | B b2 = { {}, b2.a1 }; |
1217 | B b3 = { b3.a1 }; // expected-warning{{uninitialized}} |
1218 | B b4 = { {}, b4.a2} ; // expected-warning{{uninitialized}} |
1219 | B b5 = { b5.a2 }; // expected-warning{{uninitialized}} |
1220 | |
1221 | B b6 = { {b6.a1.i1} }; // expected-warning{{uninitialized}} |
1222 | B b7 = { {0, b7.a1.i1} }; |
1223 | B b8 = { {}, {b8.a1.i1} }; |
1224 | B b9 = { {}, {0, b9.a1.i1} }; |
1225 | |
1226 | B b10 = { {b10.a1.i2} }; // expected-warning{{uninitialized}} |
1227 | B b11 = { {0, b11.a1.i2} }; // expected-warning{{uninitialized}} |
1228 | B b12 = { {}, {b12.a1.i2} }; |
1229 | B b13 = { {}, {0, b13.a1.i2} }; |
1230 | |
1231 | B b14 = { {b14.a2.i1} }; // expected-warning{{uninitialized}} |
1232 | B b15 = { {0, b15.a2.i1} }; // expected-warning{{uninitialized}} |
1233 | B b16 = { {}, {b16.a2.i1} }; // expected-warning{{uninitialized}} |
1234 | B b17 = { {}, {0, b17.a2.i1} }; |
1235 | |
1236 | B b18 = { {b18.a2.i2} }; // expected-warning{{uninitialized}} |
1237 | B b19 = { {0, b19.a2.i2} }; // expected-warning{{uninitialized}} |
1238 | B b20 = { {}, {b20.a2.i2} }; // expected-warning{{uninitialized}} |
1239 | B b21 = { {}, {0, b21.a2.i2} }; // expected-warning{{uninitialized}} |
1240 | |
1241 | B b22 = { {b18.a2.i2 + 5} }; |
1242 | Bwrapper() {} // expected-note 13{{in this constructor}} |
1243 | Bwrapper(int) : |
1244 | b1{ {}, {} }, |
1245 | b2{ {}, b2.a1 }, |
1246 | b3{ b3.a1 }, // expected-warning{{uninitialized}} |
1247 | b4{ {}, b4.a2}, // expected-warning{{uninitialized}} |
1248 | b5{ b5.a2 }, // expected-warning{{uninitialized}} |
1249 | |
1250 | b6{ {b6.a1.i1} }, // expected-warning{{uninitialized}} |
1251 | b7{ {0, b7.a1.i1} }, |
1252 | b8{ {}, {b8.a1.i1} }, |
1253 | b9{ {}, {0, b9.a1.i1} }, |
1254 | |
1255 | b10{ {b10.a1.i2} }, // expected-warning{{uninitialized}} |
1256 | b11{ {0, b11.a1.i2} }, // expected-warning{{uninitialized}} |
1257 | b12{ {}, {b12.a1.i2} }, |
1258 | b13{ {}, {0, b13.a1.i2} }, |
1259 | |
1260 | b14{ {b14.a2.i1} }, // expected-warning{{uninitialized}} |
1261 | b15{ {0, b15.a2.i1} }, // expected-warning{{uninitialized}} |
1262 | b16{ {}, {b16.a2.i1} }, // expected-warning{{uninitialized}} |
1263 | b17{ {}, {0, b17.a2.i1} }, |
1264 | |
1265 | b18{ {b18.a2.i2} }, // expected-warning{{uninitialized}} |
1266 | b19{ {0, b19.a2.i2} }, // expected-warning{{uninitialized}} |
1267 | b20{ {}, {b20.a2.i2} }, // expected-warning{{uninitialized}} |
1268 | b21{ {}, {0, b21.a2.i2} }, // expected-warning{{uninitialized}} |
1269 | |
1270 | b22{ {b18.a2.i2 + 5} } |
1271 | {} |
1272 | }; |
1273 | |
1274 | struct Cwrapper { |
1275 | C c1 = { 0, num, 0 }; |
1276 | C c2 = { 1, num, c2.b }; |
1277 | C c3 = { c3.b, num }; // expected-warning{{uninitialized}} |
1278 | C c4 = { 0, c4.b, 0 }; // expected-warning{{uninitialized}} |
1279 | C c5 = { 0, c5.c, 0 }; |
1280 | C c6 = { c6.b, num, 0 }; // expected-warning{{uninitialized}} |
1281 | C c7 = { 0, c7.a, 0 }; |
1282 | |
1283 | Cwrapper() {} // expected-note 3{{in this constructor}} |
1284 | Cwrapper(int) : |
1285 | c1{ 0, num, 0 }, |
1286 | c2{ 1, num, c2.b }, |
1287 | c3{ c3.b, num }, // expected-warning{{uninitialized}} |
1288 | c4{ 0, c4.b, 0 }, // expected-warning{{uninitialized}} |
1289 | c5{ 0, c5.c, 0 }, |
1290 | c6{ c6.b, num, 0 }, // expected-warning{{uninitialized}} |
1291 | c7{ 0, c7.a, 0 } |
1292 | {} |
1293 | }; |
1294 | |
1295 | struct Dwrapper { |
1296 | D d1 = { num, num }; |
1297 | D d2 = { num, d2.a }; |
1298 | D d3 = { d3.b, num }; // expected-warning{{uninitialized}} |
1299 | Dwrapper() {} // expected-note{{in this constructor}} |
1300 | Dwrapper(int) : |
1301 | d1{ num, num }, |
1302 | d2{ num, d2.a }, |
1303 | d3{ d3.b, num } // expected-warning{{uninitialized}} |
1304 | {} |
1305 | }; |
1306 | } |
1307 | |
1308 | namespace template_class { |
1309 | class Foo { |
1310 | public: |
1311 | int *Create() { return nullptr; } |
1312 | }; |
1313 | |
1314 | template <typename T> |
1315 | class A { |
1316 | public: |
1317 | // Don't warn on foo here. |
1318 | A() : ptr(foo->Create()) {} |
1319 | |
1320 | private: |
1321 | Foo *foo = new Foo; |
1322 | int *ptr; |
1323 | }; |
1324 | |
1325 | template <typename T> |
1326 | class B { |
1327 | public: |
1328 | // foo is uninitialized here, but class B is never instantiated. |
1329 | B() : ptr(foo->Create()) {} |
1330 | |
1331 | private: |
1332 | Foo *foo; |
1333 | int *ptr; |
1334 | }; |
1335 | |
1336 | template <typename T> |
1337 | class C { |
1338 | public: |
1339 | C() : ptr(foo->Create()) {} |
1340 | // expected-warning@-1 {{field 'foo' is uninitialized when used here}} |
1341 | private: |
1342 | Foo *foo; |
1343 | int *ptr; |
1344 | }; |
1345 | |
1346 | C<int> c; |
1347 | // expected-note@-1 {{in instantiation of member function 'template_class::C<int>::C' requested here}} |
1348 | |
1349 | } |
1350 | |
1351 | namespace base_class_access { |
1352 | struct A { |
1353 | A(); |
1354 | A(int); |
1355 | |
1356 | int i; |
1357 | int foo(); |
1358 | |
1359 | static int bar(); |
1360 | }; |
1361 | |
1362 | struct B : public A { |
1363 | B(int (*)[1]) : A() {} |
1364 | B(int (*)[2]) : A(bar()) {} |
1365 | |
1366 | B(int (*)[3]) : A(i) {} |
1367 | // expected-warning@-1 {{base class 'base_class_access::A' is uninitialized when used here to access 'base_class_access::A::i'}} |
1368 | |
1369 | B(int (*)[4]) : A(foo()) {} |
1370 | // expected-warning@-1 {{base_class_access::A' is uninitialized when used here to access 'base_class_access::A::foo'}} |
1371 | }; |
1372 | |
1373 | struct C { |
1374 | C(int) {} |
1375 | }; |
1376 | |
1377 | struct D : public C, public A { |
1378 | D(int (*)[1]) : C(0) {} |
1379 | D(int (*)[2]) : C(bar()) {} |
1380 | |
1381 | D(int (*)[3]) : C(i) {} |
1382 | // expected-warning@-1 {{base class 'base_class_access::A' is uninitialized when used here to access 'base_class_access::A::i'}} |
1383 | |
1384 | D(int (*)[4]) : C(foo()) {} |
1385 | // expected-warning@-1 {{base_class_access::A' is uninitialized when used here to access 'base_class_access::A::foo'}} |
1386 | }; |
1387 | |
1388 | } |
1389 | |
1390 | namespace value { |
1391 | template <class T> T move(T t); |
1392 | template <class T> T notmove(T t); |
1393 | } |
1394 | namespace lvalueref { |
1395 | template <class T> T move(T& t); |
1396 | template <class T> T notmove(T& t); |
1397 | } |
1398 | namespace rvalueref { |
1399 | template <class T> T move(T&& t); |
1400 | template <class T> T notmove(T&& t); |
1401 | } |
1402 | |
1403 | namespace move_test { |
1404 | int a1 = std::move(a1); // expected-warning {{uninitialized}} |
1405 | int a2 = value::move(a2); // expected-warning {{uninitialized}} |
1406 | int a3 = value::notmove(a3); // expected-warning {{uninitialized}} |
1407 | int a4 = lvalueref::move(a4); |
1408 | int a5 = lvalueref::notmove(a5); |
1409 | int a6 = rvalueref::move(a6); |
1410 | int a7 = rvalueref::notmove(a7); |
1411 | |
1412 | void test() { |
1413 | int a1 = std::move(a1); // expected-warning {{uninitialized}} |
1414 | int a2 = value::move(a2); // expected-warning {{uninitialized}} |
1415 | int a3 = value::notmove(a3); // expected-warning {{uninitialized}} |
1416 | int a4 = lvalueref::move(a4); |
1417 | int a5 = lvalueref::notmove(a5); |
1418 | int a6 = rvalueref::move(a6); |
1419 | int a7 = rvalueref::notmove(a7); |
1420 | } |
1421 | |
1422 | class A { |
1423 | int a; |
1424 | A(int (*) [1]) : a(std::move(a)) {} // expected-warning {{uninitialized}} |
1425 | A(int (*) [2]) : a(value::move(a)) {} // expected-warning {{uninitialized}} |
1426 | A(int (*) [3]) : a(value::notmove(a)) {} // expected-warning {{uninitialized}} |
1427 | A(int (*) [4]) : a(lvalueref::move(a)) {} |
1428 | A(int (*) [5]) : a(lvalueref::notmove(a)) {} |
1429 | A(int (*) [6]) : a(rvalueref::move(a)) {} |
1430 | A(int (*) [7]) : a(rvalueref::notmove(a)) {} |
1431 | }; |
1432 | } |
1433 | |
1434 | void array_capture(bool b) { |
1435 | const char fname[] = "array_capture"; |
1436 | if (b) { |
1437 | int unused; // expected-warning {{unused variable}} |
1438 | } else { |
1439 | [fname]{}; |
1440 | } |
1441 | } |
1442 | |
1443 | void if_switch_init_stmt(int k) { |
1444 | if (int n = 0; (n == k || k > 5)) {} |
1445 | |
1446 | if (int n; (n == k || k > 5)) {} // expected-warning {{uninitialized}} expected-note {{initialize}} |
1447 | |
1448 | switch (int n = 0; (n == k || k > 5)) {} // expected-warning {{boolean}} |
1449 | |
1450 | switch (int n; (n == k || k > 5)) {} // expected-warning {{uninitialized}} expected-note {{initialize}} expected-warning {{boolean}} |
1451 | } |
1452 | |