1 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 150 -o - %s -Wuninitialized
2 // RUN: %clang_cc1 -verify -fopenmp -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
3 // RUN: %clang_cc1 -verify -fopenmp -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
4
5 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 150 -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
7 // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
8
9 extern int omp_default_mem_alloc;
xxx(int argc)10 void xxx(int argc) {
11 int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
12 #pragma omp parallel for reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
13 for (int i = 0; i < 10; ++i)
14 ;
15 }
16
foo()17 void foo() {
18 }
19
foobool(int argc)20 bool foobool(int argc) {
21 return argc;
22 }
23
foobar(int & ref)24 void foobar(int &ref) {
25 #pragma omp parallel for reduction(+:ref)
26 for (int i = 0; i < 10; ++i)
27 foo();
28 }
29
30 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
31 extern S1 a;
32 class S2 {
33 mutable int a;
operator +(const S2 & arg)34 S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
35
36 public:
S2()37 S2() : a(0) {}
S2(S2 & s2)38 S2(S2 &s2) : a(s2.a) {}
39 static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
40 static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
41 };
42 const float S2::S2sc = 0;
43 S2 b; // expected-note 3 {{'b' defined here}}
44 const S2 ba[5]; // expected-note 2 {{'ba' defined here}}
45 class S3 {
46 int a;
47
48 public:
49 int b;
S3()50 S3() : a(0) {}
S3(const S3 & s3)51 S3(const S3 &s3) : a(s3.a) {}
operator +(const S3 & arg1)52 S3 operator+(const S3 &arg1) { return arg1; }
53 };
operator +(const S3 & arg1,const S3 & arg2)54 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
55 S3 c; // expected-note 3 {{'c' defined here}}
56 const S3 ca[5]; // expected-note 2 {{'ca' defined here}}
57 extern const int f; // expected-note 4 {{'f' declared here}}
58 class S4 {
59 int a;
60 S4(); // expected-note {{implicitly declared private here}}
61 S4(const S4 &s4);
operator +(const S4 & arg)62 S4 &operator+(const S4 &arg) { return (*this); }
63
64 public:
S4(int v)65 S4(int v) : a(v) {}
66 };
operator &=(S4 & arg1,S4 & arg2)67 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
68 class S5 {
69 int a;
S5()70 S5() : a(0) {} // expected-note {{implicitly declared private here}}
S5(const S5 & s5)71 S5(const S5 &s5) : a(s5.a) {}
72 S5 &operator+(const S5 &arg);
73
74 public:
S5(int v)75 S5(int v) : a(v) {}
foo()76 void foo() {
77 #pragma omp parallel private(a) // expected-note {{defined as private}}
78 #pragma omp for reduction(+:a) // expected-error {{reduction variable must be shared}}
79 for (int i = 0; i < 10; ++i)
80 ::foo();
81 #pragma omp parallel for reduction(inscan, +:a)
82 for (int i = 0; i < 10; ++i) {
83 #pragma omp scan inclusive(a)
84 }
85 #pragma omp parallel for reduction(inscan, +:a)
86 for (int i = 0; i < 10; ++i) {
87 #pragma omp scan exclusive(a)
88 }
89 }
90 };
91 class S6 { // expected-note 3 {{candidate function (the implicit copy assignment operator) not viable: no known conversion from 'int' to 'const S6' for 1st argument}}
92 #if __cplusplus >= 201103L // C++11 or later
93 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
94 #endif
95 int a;
96
97 public:
S6()98 S6() : a(6) {}
operator int()99 operator int() { return 6; }
100 } o;
101
102 S3 h, k;
103 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
104
105 template <class T> // expected-note {{declared here}}
tmain(T argc)106 T tmain(T argc) {
107 const T d = T(); // expected-note 4 {{'d' defined here}}
108 const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
109 T qa[5] = {T()};
110 T i, z;
111 T &j = i; // expected-note 4 {{'j' defined here}}
112 S3 &p = k; // expected-note 2 {{'p' defined here}}
113 const T &r = da[(int)i]; // expected-note 2 {{'r' defined here}}
114 T &q = qa[(int)i]; // expected-note 2 {{'q' defined here}}
115 T fl;
116 #pragma omp parallel for reduction // expected-error {{expected '(' after 'reduction'}}
117 for (int i = 0; i < 10; ++i)
118 foo();
119 #pragma omp parallel for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
120 for (int i = 0; i < 10; ++i)
121 foo();
122 #pragma omp parallel for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
123 for (int i = 0; i < 10; ++i)
124 foo();
125 #pragma omp parallel for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
126 for (int i = 0; i < 10; ++i)
127 foo();
128 #pragma omp parallel for reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
129 for (int i = 0; i < 10; ++i)
130 foo();
131 #pragma omp parallel for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
132 for (int i = 0; i < 10; ++i)
133 foo();
134 #pragma omp parallel for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
135 for (int i = 0; i < 10; ++i)
136 foo();
137 #pragma omp parallel for reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
138 for (int i = 0; i < 10; ++i)
139 foo();
140 #pragma omp parallel for reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
141 for (int i = 0; i < 10; ++i)
142 foo();
143 #pragma omp parallel for reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
144 for (int i = 0; i < 10; ++i)
145 foo();
146 #pragma omp parallel for reduction(foo : argc) //expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'float'}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
147 for (int i = 0; i < 10; ++i)
148 foo();
149 #pragma omp parallel for reduction(&& : argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
150 for (int i = 0; i < 10; ++i)
151 foo();
152 #pragma omp parallel for reduction(^ : T) // expected-error {{'T' does not refer to a value}}
153 for (int i = 0; i < 10; ++i)
154 foo();
155 #pragma omp parallel for reduction(+ : z, a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 3 {{const-qualified variable cannot be reduction}} expected-error 2 {{'operator+' is a private member of 'S2'}}
156 for (int i = 0; i < 10; ++i)
157 foo();
158 #pragma omp parallel for reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 4 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 3 {{const-qualified variable cannot be reduction}}
159 for (int i = 0; i < 10; ++i)
160 foo();
161 #pragma omp parallel for reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
162 for (int i = 0; i < 10; ++i)
163 foo();
164 #pragma omp parallel for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
165 for (int i = 0; i < 10; ++i)
166 foo();
167 #pragma omp parallel for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
168 for (int i = 0; i < 10; ++i)
169 foo();
170 #pragma omp parallel for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
171 for (int i = 0; i < 10; ++i)
172 foo();
173 #pragma omp parallel for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
174 for (int i = 0; i < 10; ++i)
175 foo();
176 #pragma omp parallel for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
177 for (int i = 0; i < 10; ++i)
178 foo();
179 #pragma omp parallel for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
180 for (int i = 0; i < 10; ++i)
181 foo();
182 #pragma omp parallel for reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
183 for (int i = 0; i < 10; ++i)
184 foo();
185 #pragma omp parallel for reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
186 for (int i = 0; i < 10; ++i)
187 foo();
188 #pragma omp parallel for private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
189 for (int i = 0; i < 10; ++i)
190 foo();
191 #pragma omp parallel private(k)
192 #pragma omp parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
193 for (int i = 0; i < 10; ++i)
194 foo();
195 #pragma omp parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
196 for (int i = 0; i < 10; ++i)
197 foo();
198 #pragma omp parallel for reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
199 for (int i = 0; i < 10; ++i)
200 foo();
201 #pragma omp parallel shared(i)
202 #pragma omp parallel reduction(min : i)
203 #pragma omp parallel for reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
204 for (int i = 0; i < 10; ++i)
205 foo();
206 #pragma omp parallel private(fl)
207 #pragma omp parallel for reduction(+ : fl)
208 for (int i = 0; i < 10; ++i)
209 foo();
210 #pragma omp parallel reduction(* : fl)
211 #pragma omp parallel for reduction(+ : fl)
212 for (int i = 0; i < 10; ++i)
213 foo();
214
215 return T();
216 }
217
218 namespace A {
219 double x;
220 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
221 }
222 namespace B {
223 using A::x;
224 }
225
main(int argc,char ** argv)226 int main(int argc, char **argv) {
227 const int d = 5; // expected-note 2 {{'d' defined here}}
228 const int da[5] = {0}; // expected-note {{'da' defined here}}
229 int qa[5] = {0};
230 S4 e(4);
231 S5 g(5);
232 int i, z;
233 int &j = i; // expected-note 2 {{'j' defined here}}
234 S3 &p = k; // expected-note 2 {{'p' defined here}}
235 const int &r = da[i]; // expected-note {{'r' defined here}}
236 int &q = qa[i]; // expected-note {{'q' defined here}}
237 float fl;
238 #pragma omp parallel for reduction // expected-error {{expected '(' after 'reduction'}}
239 for (int i = 0; i < 10; ++i)
240 foo();
241 #pragma omp parallel for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
242 for (int i = 0; i < 10; ++i)
243 foo();
244 #pragma omp parallel for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
245 for (int i = 0; i < 10; ++i)
246 foo();
247 #pragma omp parallel for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
248 for (int i = 0; i < 10; ++i)
249 foo();
250 #pragma omp parallel for reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
251 for (int i = 0; i < 10; ++i)
252 foo();
253 #pragma omp parallel for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
254 for (int i = 0; i < 10; ++i)
255 foo();
256 #pragma omp parallel for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
257 for (int i = 0; i < 10; ++i)
258 foo();
259 #pragma omp parallel for reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
260 for (int i = 0; i < 10; ++i)
261 foo();
262 #pragma omp parallel for reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
263 for (int i = 0; i < 10; ++i)
264 foo();
265 #pragma omp parallel for reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
266 for (int i = 0; i < 10; ++i)
267 foo();
268 #pragma omp parallel for reduction(~ : argc) // expected-error {{expected unqualified-id}}
269 for (int i = 0; i < 10; ++i)
270 foo();
271 #pragma omp parallel for reduction(&& : argc)
272 for (int i = 0; i < 10; ++i)
273 foo();
274 #pragma omp parallel for reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
275 for (int i = 0; i < 10; ++i)
276 foo();
277 #pragma omp parallel for reduction(+ : z, a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{const-qualified variable cannot be reduction}} expected-error {{'operator+' is a private member of 'S2'}}
278 for (int i = 0; i < 10; ++i)
279 foo();
280 #pragma omp parallel for reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 2 {{const-qualified variable cannot be reduction}}
281 for (int i = 0; i < 10; ++i)
282 foo();
283 #pragma omp parallel for reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
284 for (int i = 0; i < 10; ++i)
285 foo();
286 #pragma omp parallel for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
287 for (int i = 0; i < 10; ++i)
288 foo();
289 #pragma omp parallel for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
290 for (int i = 0; i < 10; ++i)
291 foo();
292 #pragma omp parallel for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
293 for (int i = 0; i < 10; ++i)
294 foo();
295 #pragma omp parallel for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
296 for (int i = 0; i < 10; ++i)
297 foo();
298 #pragma omp parallel for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
299 for (int i = 0; i < 10; ++i)
300 foo();
301 #pragma omp parallel for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
302 for (int i = 0; i < 10; ++i)
303 foo();
304 #pragma omp parallel for reduction(& : e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}} expected-error {{invalid operands to binary expression ('S5' and 'S5')}}
305 for (int i = 0; i < 10; ++i)
306 foo();
307 #pragma omp parallel for reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
308 for (int i = 0; i < 10; ++i)
309 foo();
310 #pragma omp parallel for reduction(+ : o) // expected-error {{no viable overloaded '='}}
311 for (int i = 0; i < 10; ++i)
312 foo();
313 #pragma omp parallel for private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
314 for (int i = 0; i < 10; ++i)
315 foo();
316 #pragma omp parallel private(k)
317 #pragma omp parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
318 for (int i = 0; i < 10; ++i)
319 foo();
320 #pragma omp parallel for reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
321 for (int i = 0; i < 10; ++i)
322 foo();
323 #pragma omp parallel for reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
324 for (int i = 0; i < 10; ++i)
325 foo();
326 #pragma omp parallel shared(i)
327 #pragma omp parallel reduction(min : i)
328 #pragma omp parallel for reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
329 for (int i = 0; i < 10; ++i)
330 foo();
331 #pragma omp parallel private(fl)
332 #pragma omp parallel for reduction(+ : fl)
333 for (int i = 0; i < 10; ++i)
334 foo();
335 #pragma omp parallel reduction(* : fl)
336 #pragma omp parallel for reduction(+ : fl)
337 for (int i = 0; i < 10; ++i)
338 foo();
339 static int m;
340 #pragma omp parallel for reduction(+ : m) // OK
341 for (int i = 0; i < 10; ++i)
342 m++;
343 #pragma omp parallel for reduction(task, + : m) // OK
344 for (int i = 0; i < 10; ++i)
345 m++;
346
347 #pragma omp parallel for reduction(inscan, + : m) reduction(*: fl) reduction(default, &&: j) // expected-error 2 {{expected 'reduction' clause with the 'inscan' modifier}} expected-note 2 {{'reduction' clause with 'inscan' modifier is used here}}
348 for (int i = 0; i < 10; ++i) {
349 #pragma omp scan exclusive(m)
350 m++;
351 }
352 #pragma omp parallel for reduction(inscan, + : m, fl, j) // expected-error 2 {{the inscan reduction list item must appear as a list item in an 'inclusive' or 'exclusive' clause on an inner 'omp scan' directive}}
353 for (int i = 0; i < 10; ++i) {
354 #pragma omp scan exclusive(m)
355 m++;
356 }
357 #pragma omp parallel for reduction(inscan, + : m, fl, j) // expected-error 2 {{the inscan reduction list item must appear as a list item in an 'inclusive' or 'exclusive' clause on an inner 'omp scan' directive}}
358 for (int i = 0; i < 10; ++i) {
359 #pragma omp scan inclusive(m)
360 m++;
361 }
362
363 return tmain(argc) + tmain(fl); // expected-note {{in instantiation of function template specialization 'tmain<int>' requested here}} expected-note {{in instantiation of function template specialization 'tmain<float>' requested here}}
364 }
365