| 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 | |