1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -ferror-limit 150 -o - %s -Wuninitialized
2 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
3 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
4 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -ferror-limit 150 -o - %s -Wuninitialized
5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
7 
8 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -ferror-limit 150 -o - %s -Wuninitialized
9 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
10 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
11 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -ferror-limit 150 -o - %s -Wuninitialized
12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
14 
15 extern int omp_default_mem_alloc;
16 void xxx(int argc) {
17   int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
18 #pragma omp parallel
19 #pragma omp for reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
20   for (int i = 0; i < 10; ++i)
21     ;
22 }
23 
24 void foo() {
25 }
26 
27 bool foobool(int argc) {
28   return argc;
29 }
30 
31 void foobar(int &ref) {
32 #pragma omp parallel
33 #pragma omp for reduction(+:ref)
34   for (int i = 0; i < 10; ++i)
35     foo();
36 }
37 
38 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
39 extern S1 a;
40 class S2 {
41   mutable int a;
42   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
43 
44 public:
45   S2() : a(0) {}
46   S2(S2 &s2) : a(s2.a) {}
47   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
48   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
49 };
50 const float S2::S2sc = 0;
51 S2 b;                     // expected-note 3 {{'b' defined here}}
52 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
53 class S3 {
54   int a;
55 
56 public:
57   S3() : a(0) {}
58   S3(const S3 &s3) : a(s3.a) {}
59   S3 operator+(const S3 &arg1) { return arg1; }
60 };
61 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
62 S3 c;               // expected-note 3 {{'c' defined here}}
63 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
64 extern const int f; // expected-note 4 {{'f' declared here}}
65 class S4 {
66   int a;
67   S4(); // expected-note {{implicitly declared private here}}
68   S4(const S4 &s4);
69   S4 &operator+(const S4 &arg) { return (*this); }
70 
71 public:
72   S4(int v) : a(v) {}
73 };
74 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
75 class S5 {
76   int a;
77   S5() : a(0) {} // expected-note {{implicitly declared private here}}
78   S5(const S5 &s5) : a(s5.a) {}
79   S5 &operator+(const S5 &arg);
80 
81 public:
82   S5(int v) : a(v) {}
83 };
84 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}}
85 #if __cplusplus >= 201103L // C++11 or later
86 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable: no known conversion from 'int' to 'S6' for 1st argument}}
87 #endif
88   int a;
89 
90 public:
91   S6() : a(6) {}
92   operator int() { return 6; }
93 } o;
94 
95 S3 h, k;
96 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
97 
98 char *get();
99 
100 template <class T>       // expected-note {{declared here}}
101 T tmain(T argc) {
102   const T d = T();       // expected-note 4 {{'d' defined here}}
103   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
104   T qa[5] = {T()};
105   T i, z;
106   T &j = i;                // expected-note 4 {{'j' defined here}}
107   S3 &p = k;               // expected-note 2 {{'p' defined here}}
108   const T &r = da[(int)i]; // expected-note 2 {{'r' defined here}}
109   T &q = qa[(int)i];       // expected-note 2 {{'q' defined here}}
110   T fl;
111 #pragma omp parallel
112 #pragma omp for reduction // expected-error {{expected '(' after 'reduction'}}
113   for (int i = 0; i < 10; ++i)
114     foo();
115 #pragma omp parallel
116 #pragma omp for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}
117   for (int i = 0; i < 10; ++i)
118     foo();
119 #pragma omp parallel
120 #pragma omp for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
121   for (int i = 0; i < 10; ++i)
122     foo();
123 #pragma omp parallel
124 #pragma omp for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
125   for (int i = 0; i < 10; ++i)
126     foo();
127 #pragma omp parallel
128 #pragma omp 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
132 #pragma omp for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
133   for (int i = 0; i < 10; ++i)
134     foo();
135 #pragma omp parallel
136 #pragma omp for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
137   for (int i = 0; i < 10; ++i)
138     foo();
139 #pragma omp parallel
140 #pragma omp for reduction(& : argc // 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
144 #pragma omp 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')}}
145   for (int i = 0; i < 10; ++i)
146     foo();
147 #pragma omp parallel
148 #pragma omp for reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name}}
149   for (int i = 0; i < 10; ++i)
150     foo();
151 #pragma omp parallel
152 #pragma omp 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'}}
153   for (int i = 0; i < 10; ++i)
154     foo();
155 #pragma omp parallel
156 #pragma omp for reduction(&& : argc)
157   for (int i = 0; i < 10; ++i)
158     foo();
159 #pragma omp parallel
160 #pragma omp for reduction(^ : T) // expected-error {{'T' does not refer to a value}}
161   for (int i = 0; i < 10; ++i)
162     foo();
163 #pragma omp parallel
164 #pragma omp 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'}}
165   for (int i = 0; i < 10; ++i)
166     foo();
167 #pragma omp parallel
168 #pragma omp for reduction(min : z, 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}}
169   for (int i = 0; i < 10; ++i)
170     foo();
171 #pragma omp parallel
172 #pragma omp for reduction(max : qa[1])
173   for (int i = 0; i < 10; ++i)
174     foo();
175 #pragma omp parallel
176 #pragma omp for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
177   for (int i = 0; i < 10; ++i)
178     foo();
179 #pragma omp parallel
180 #pragma omp for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
181   for (int i = 0; i < 10; ++i)
182     foo();
183 #pragma omp parallel
184 #pragma omp for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
185   for (int i = 0; i < 10; ++i)
186     foo();
187 #pragma omp parallel
188 #pragma omp for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
189   for (int i = 0; i < 10; ++i)
190     foo();
191 #pragma omp parallel
192 #pragma omp for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
193   for (int i = 0; i < 10; ++i)
194     foo();
195 #pragma omp parallel
196 #pragma omp for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
197   for (int i = 0; i < 10; ++i)
198     foo();
199 #pragma omp parallel
200 #pragma omp for reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
201   for (int i = 0; i < 10; ++i)
202     foo();
203 #pragma omp parallel
204 #pragma omp for reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
205   for (int i = 0; i < 10; ++i)
206     foo();
207 #pragma omp parallel
208 #pragma omp for private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
209   for (int i = 0; i < 10; ++i)
210     foo();
211 #pragma omp parallel private(k)
212 #pragma omp for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
213   for (int i = 0; i < 10; ++i)
214     foo();
215 #pragma omp parallel
216 #pragma omp for reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
217   for (int i = 0; i < 10; ++i)
218     foo();
219 #pragma omp parallel
220 #pragma omp for reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
221   for (int i = 0; i < 10; ++i)
222     foo();
223 #pragma omp parallel shared(i)
224 #pragma omp parallel reduction(min : i)
225 #pragma omp for reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
226   for (int i = 0; i < 10; ++i)
227     foo();
228 #pragma omp parallel private(fl)  // expected-note 2 {{defined as private}}
229 #pragma omp for reduction(+ : fl) // expected-error 2 {{reduction variable must be shared}}
230   for (int i = 0; i < 10; ++i)
231     foo();
232 #pragma omp parallel private(qa)
233 #pragma omp for reduction(+ : qa[1], get()[0]) // expected-error {{expected variable name as a base of the array subscript}}
234   for (int i = 0; i < 10; ++i)
235     foo();
236 #pragma omp parallel shared(qa)
237 #pragma omp for reduction(+ : qa[1], qa[0])
238   for (int i = 0; i < 10; ++i)
239     foo();
240 #pragma omp parallel reduction(* : fl) // expected-note 2 {{defined as reduction}}
241 #pragma omp for reduction(+ : fl)      // expected-error 2 {{reduction variable must be shared}}
242   for (int i = 0; i < 10; ++i)
243     foo();
244 
245   return T();
246 }
247 
248 namespace A {
249 double x;
250 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
251 }
252 namespace B {
253 using A::x;
254 }
255 
256 int main(int argc, char **argv) {
257   const int d = 5;       // expected-note 2 {{'d' defined here}}
258   const int da[5] = {0}; // expected-note {{'da' defined here}}
259   int qa[5] = {0};
260   S4 e(4);
261   S5 g(5);
262   int i, z;
263   int &j = i;           // expected-note 2 {{'j' defined here}}
264   S3 &p = k;            // expected-note 2 {{'p' defined here}}
265   const int &r = da[i]; // expected-note {{'r' defined here}}
266   int &q = qa[i];       // expected-note {{'q' defined here}}
267   float fl;
268 #pragma omp parallel
269 #pragma omp for reduction // expected-error {{expected '(' after 'reduction'}}
270   for (int i = 0; i < 10; ++i)
271     foo();
272 #pragma omp parallel
273 #pragma omp for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}
274   for (int i = 0; i < 10; ++i)
275     foo();
276 #pragma omp parallel
277 #pragma omp for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
278   for (int i = 0; i < 10; ++i)
279     foo();
280 #pragma omp parallel
281 #pragma omp for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
282   for (int i = 0; i < 10; ++i)
283     foo();
284 #pragma omp parallel
285 #pragma omp for reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
286   for (int i = 0; i < 10; ++i)
287     foo();
288 #pragma omp parallel
289 #pragma omp for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
290   for (int i = 0; i < 10; ++i)
291     foo();
292 #pragma omp parallel
293 #pragma omp for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
294   for (int i = 0; i < 10; ++i)
295     foo();
296 #pragma omp parallel
297 #pragma omp for reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
298   for (int i = 0; i < 10; ++i)
299     foo();
300 #pragma omp parallel
301 #pragma omp for reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
302   for (int i = 0; i < 10; ++i)
303     foo();
304 #pragma omp parallel
305 #pragma omp for reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
306   for (int i = 0; i < 10; ++i)
307     foo();
308 #pragma omp parallel
309 #pragma omp for reduction(~ : argc) // expected-error {{expected unqualified-id}}
310   for (int i = 0; i < 10; ++i)
311     foo();
312 #pragma omp parallel
313 #pragma omp 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 '('}}
314   for (int i = 0; i < 10; ++i)
315     foo();
316 #pragma omp parallel
317 #pragma omp for reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
318   for (int i = 0; i < 10; ++i)
319     foo();
320 #pragma omp parallel
321 #pragma omp for reduction(+ : 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'}}
322   for (int i = 0; i < 10; ++i)
323     foo();
324 #pragma omp parallel
325 #pragma omp 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}}
326   for (int i = 0; i < 10; ++i)
327     foo();
328 #pragma omp parallel
329 #pragma omp for reduction(max : argv[1], z)
330   for (int i = 0; i < 10; ++i)
331     foo();
332 #pragma omp parallel
333 #pragma omp for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
334   for (int i = 0; i < 10; ++i)
335     foo();
336 #pragma omp parallel
337 #pragma omp for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
338   for (int i = 0; i < 10; ++i)
339     foo();
340 #pragma omp parallel
341 #pragma omp for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
342   for (int i = 0; i < 10; ++i)
343     foo();
344 #pragma omp parallel
345 #pragma omp for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
346   for (int i = 0; i < 10; ++i)
347     foo();
348 #pragma omp parallel
349 #pragma omp for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
350   for (int i = 0; i < 10; ++i)
351     foo();
352 #pragma omp parallel
353 #pragma omp for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
354   for (int i = 0; i < 10; ++i)
355     foo();
356 #pragma omp parallel
357 #pragma omp 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')}}
358   for (int i = 0; i < 10; ++i)
359     foo();
360 #pragma omp parallel
361 #pragma omp for reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
362   for (int i = 0; i < 10; ++i)
363     foo();
364 #pragma omp parallel
365 #pragma omp for reduction(+ : B::x, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
366   for (int i = 0; i < 10; ++i)
367     foo();
368 #pragma omp parallel
369 #pragma omp for reduction(+ : o) // expected-error {{no viable overloaded '='}}
370   for (int i = 0; i < 10; ++i)
371     foo();
372 #pragma omp parallel
373 #pragma omp for private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
374   for (int i = 0; i < 10; ++i)
375     foo();
376 #pragma omp parallel private(k)
377 #pragma omp for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
378   for (int i = 0; i < 10; ++i)
379     foo();
380 #pragma omp parallel
381 #pragma omp for reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
382   for (int i = 0; i < 10; ++i)
383     foo();
384 #pragma omp parallel
385 #pragma omp for reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
386   for (int i = 0; i < 10; ++i)
387     foo();
388 #pragma omp parallel shared(i)
389 #pragma omp parallel reduction(min : i)
390 #pragma omp for reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
391   for (int i = 0; i < 10; ++i)
392     foo();
393 #pragma omp parallel private(fl)  // expected-note {{defined as private}}
394 #pragma omp for reduction(+ : fl) // expected-error {{reduction variable must be shared}}
395   for (int i = 0; i < 10; ++i)
396     foo();
397 #pragma omp parallel private(argv)
398 #pragma omp for reduction(+ : argv[1], get()[0]) // expected-error {{expected variable name as a base of the array subscript}} expected-error {{invalid operands to binary expression ('char *' and 'char *')}}
399   for (int i = 0; i < 10; ++i)
400     foo();
401 #pragma omp parallel shared(qa)
402 #pragma omp for reduction(+ : qa[1], qa[0])
403   for (int i = 0; i < 10; ++i)
404     foo();
405 #pragma omp parallel reduction(* : fl) // expected-note {{defined as reduction}}
406 #pragma omp for reduction(+ : fl)      // expected-error {{reduction variable must be shared}}
407   for (int i = 0; i < 10; ++i)
408     foo();
409   static int m=0;
410 #pragma omp for reduction(+:m)
411   for (int i = 0; i < 10; ++i)
412     m++;
413 #pragma omp for reduction(task, +:m) // omp45-error 2 {{expected expression}} omp45-warning {{missing ':' after reduction identifier - ignoring}}
414   for (int i = 0; i < 10; ++i)
415     m++;
416 
417   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}}
418 }
419