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 -fopenmp-version=50 -ferror-limit 150 -o - %s -Wuninitialized
5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -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 -fopenmp-version=50 -ferror-limit 150 -o - %s -Wuninitialized
12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -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 sections reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
20   {
21     for (int i = 0; i < 10; ++i)
22       ;
23   }
24 }
25 
26 void foo() {
27 }
28 
29 bool foobool(int argc) {
30   return argc;
31 }
32 
33 void foobar(int &ref) {
34 #pragma omp parallel
35 #pragma omp sections reduction(+:ref)
36   {
37     foo();
38   }
39 }
40 
41 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
42 extern S1 a;
43 class S2 {
44   mutable int a;
45   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
46 
47 public:
48   S2() : a(0) {}
49   S2(S2 &s2) : a(s2.a) {}
50   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
51   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
52 };
53 const float S2::S2sc = 0;
54 S2 b;                     // expected-note 3 {{'b' defined here}}
55 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
56 class S3 {
57   int a;
58 
59 public:
60   int b;
61   S3() : a(0) {}
62   S3(const S3 &s3) : a(s3.a) {}
63   S3 operator+(const S3 &arg1) { return arg1; }
64 };
65 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
66 S3 c;               // expected-note 3 {{'c' defined here}}
67 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
68 extern const int f; // expected-note 4 {{'f' declared here}}
69 class S4 {
70   int a;
71   S4(); // expected-note {{implicitly declared private here}}
72   S4(const S4 &s4);
73   S4 &operator+(const S4 &arg) { return (*this); }
74 
75 public:
76   S4(int v) : a(v) {}
77 };
78 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
79 class S5 {
80   int a;
81   S5() : a(0) {} // expected-note {{implicitly declared private here}}
82   S5(const S5 &s5) : a(s5.a) {}
83   S5 &operator+(const S5 &arg);
84 
85 public:
86   S5(int v) : a(v) {}
87 };
88 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}}
89 #if __cplusplus >= 201103L // C++11 or later
90 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
91 #endif
92   int a;
93 
94 public:
95   S6() : a(6) {}
96   operator int() { return 6; }
97 } o;
98 
99 S3 h, k;
100 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
101 
102 template <class T>       // expected-note {{declared here}}
103 T tmain(T argc) {
104   const T d = T();       // expected-note 4 {{'d' defined here}}
105   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
106   T qa[5] = {T()};
107   T i, z;
108   T &j = i;                // expected-note 4 {{'j' defined here}}
109   S3 &p = k;               // expected-note 2 {{'p' defined here}}
110   const T &r = da[(int)i]; // expected-note 2 {{'r' defined here}}
111   T &q = qa[(int)i];       // expected-note 2 {{'q' defined here}}
112   T fl;
113 #pragma omp parallel
114 #pragma omp sections reduction // expected-error {{expected '(' after 'reduction'}}
115   {
116     foo();
117   }
118 #pragma omp parallel
119 #pragma omp sections reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp sections' are ignored}}
120   {
121     foo();
122   }
123 #pragma omp parallel
124 #pragma omp sections reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
125   {
126     foo();
127   }
128 #pragma omp parallel
129 #pragma omp sections reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
130   {
131     foo();
132   }
133 #pragma omp parallel
134 #pragma omp sections reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
135   {
136     foo();
137   }
138 #pragma omp parallel
139 #pragma omp sections reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
140   {
141     foo();
142   }
143 #pragma omp parallel
144 #pragma omp sections reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
145   {
146     foo();
147   }
148 #pragma omp parallel
149 #pragma omp sections reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
150   {
151     foo();
152   }
153 #pragma omp parallel
154 #pragma omp sections reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
155   {
156     foo();
157   }
158 #pragma omp parallel
159 #pragma omp sections reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
160   {
161     foo();
162   }
163 #pragma omp parallel
164 #pragma omp sections 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'}}
165   {
166     foo();
167   }
168 #pragma omp parallel
169 #pragma omp sections 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 '('}}
170   {
171     foo();
172   }
173 #pragma omp parallel
174 #pragma omp sections reduction(^ : T) // expected-error {{'T' does not refer to a value}}
175   {
176     foo();
177   }
178 #pragma omp parallel
179 #pragma omp sections reduction(+ : 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'}}
180   {
181     foo();
182   }
183 #pragma omp parallel
184 #pragma omp sections 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}}
185   {
186     foo();
187   }
188 #pragma omp parallel
189 #pragma omp sections reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
190   {
191     foo();
192   }
193 #pragma omp parallel
194 #pragma omp sections reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
195   {
196     foo();
197   }
198 #pragma omp parallel
199 #pragma omp sections reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
200   {
201     foo();
202   }
203 #pragma omp parallel
204 #pragma omp sections reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
205   {
206     foo();
207   }
208 #pragma omp parallel
209 #pragma omp sections reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
210   {
211     foo();
212   }
213 #pragma omp parallel
214 #pragma omp sections reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
215   {
216     foo();
217   }
218 #pragma omp parallel
219 #pragma omp sections reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
220   {
221     foo();
222   }
223 #pragma omp parallel
224 #pragma omp sections reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
225   {
226     foo();
227   }
228 #pragma omp parallel
229 #pragma omp sections reduction(+ : o, z) // expected-error 2 {{no viable overloaded '='}}
230   {
231     foo();
232   }
233 #pragma omp parallel
234 #pragma omp sections private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
235   {
236     foo();
237   }
238 #pragma omp parallel private(k)
239 #pragma omp sections reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
240   {
241     foo();
242   }
243 #pragma omp parallel
244 #pragma omp sections reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
245   {
246     foo();
247   }
248 #pragma omp parallel
249 #pragma omp sections reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
250   {
251     foo();
252   }
253 #pragma omp parallel shared(i)
254 #pragma omp parallel reduction(min : i)
255 #pragma omp sections reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
256   {
257     foo();
258   }
259 #pragma omp parallel private(fl)       // expected-note 2 {{defined as private}}
260 #pragma omp sections reduction(+ : fl) // expected-error 2 {{reduction variable must be shared}}
261   {
262     foo();
263   }
264 #pragma omp parallel reduction(* : fl) // expected-note 2 {{defined as reduction}}
265 #pragma omp sections reduction(+ : fl) // expected-error 2 {{reduction variable must be shared}}
266   {
267     foo();
268   }
269 
270   return T();
271 }
272 
273 namespace A {
274 double x;
275 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
276 }
277 namespace B {
278 using A::x;
279 }
280 
281 int main(int argc, char **argv) {
282   const int d = 5;       // expected-note 2 {{'d' defined here}}
283   const int da[5] = {0}; // expected-note {{'da' defined here}}
284   int qa[5] = {0};
285   S4 e(4);
286   S5 g(5);
287   int i, z;
288   int &j = i;           // expected-note 2 {{'j' defined here}}
289   S3 &p = k;            // expected-note 2 {{'p' defined here}}
290   const int &r = da[i]; // expected-note {{'r' defined here}}
291   int &q = qa[i];       // expected-note {{'q' defined here}}
292   float fl;
293 #pragma omp parallel
294 #pragma omp sections reduction // expected-error {{expected '(' after 'reduction'}}
295   {
296     foo();
297   }
298 #pragma omp parallel
299 #pragma omp sections reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp sections' are ignored}}
300   {
301     foo();
302   }
303 #pragma omp parallel
304 #pragma omp sections reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
305   {
306     foo();
307   }
308 #pragma omp parallel
309 #pragma omp sections reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
310   {
311     foo();
312   }
313 #pragma omp parallel
314 #pragma omp sections reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
315   {
316     foo();
317   }
318 #pragma omp parallel
319 #pragma omp sections reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
320   {
321     foo();
322   }
323 #pragma omp parallel
324 #pragma omp sections reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
325   {
326     foo();
327   }
328 #pragma omp parallel
329 #pragma omp sections reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
330   {
331     foo();
332   }
333 #pragma omp parallel
334 #pragma omp sections reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
335   {
336     foo();
337   }
338 #pragma omp parallel
339 #pragma omp sections reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
340   {
341     foo();
342   }
343 #pragma omp parallel
344 #pragma omp sections reduction(~ : argc) // expected-error {{expected unqualified-id}}
345   {
346     foo();
347   }
348 #pragma omp parallel
349 #pragma omp sections reduction(&& : argc, z)
350   {
351     foo();
352   }
353 #pragma omp parallel
354 #pragma omp sections reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
355   {
356     foo();
357   }
358 #pragma omp parallel
359 #pragma omp sections 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'}}
360   {
361     foo();
362   }
363 #pragma omp parallel
364 #pragma omp sections 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}}
365   {
366     foo();
367   }
368 #pragma omp parallel
369 #pragma omp sections reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
370   {
371     foo();
372   }
373 #pragma omp parallel
374 #pragma omp sections reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
375   {
376     foo();
377   }
378 #pragma omp parallel
379 #pragma omp sections reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
380   {
381     foo();
382   }
383 #pragma omp parallel
384 #pragma omp sections reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
385   {
386     foo();
387   }
388 #pragma omp parallel
389 #pragma omp sections reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
390   {
391     foo();
392   }
393 #pragma omp parallel
394 #pragma omp sections reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
395   {
396     foo();
397   }
398 #pragma omp parallel
399 #pragma omp sections reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
400   {
401     foo();
402   }
403 #pragma omp parallel
404 #pragma omp sections 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')}}
405   {
406     foo();
407   }
408 #pragma omp parallel
409 #pragma omp sections reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
410   {
411     foo();
412   }
413 #pragma omp parallel
414 #pragma omp sections reduction(+ : o) // expected-error {{no viable overloaded '='}}
415   {
416     foo();
417   }
418 #pragma omp parallel
419 #pragma omp sections private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
420   {
421     foo();
422   }
423 #pragma omp parallel private(k)
424 #pragma omp sections reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
425   {
426     foo();
427   }
428 #pragma omp parallel
429 #pragma omp sections reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
430   {
431     foo();
432   }
433 #pragma omp parallel
434 #pragma omp sections reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
435   {
436     foo();
437   }
438 #pragma omp parallel shared(i)
439 #pragma omp parallel reduction(min : i)
440 #pragma omp sections reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
441   {
442     foo();
443   }
444 #pragma omp parallel private(fl)       // expected-note {{defined as private}}
445 #pragma omp sections reduction(+ : fl) // expected-error {{reduction variable must be shared}}
446   {
447     foo();
448   }
449 #pragma omp parallel reduction(* : fl) // expected-note {{defined as reduction}}
450 #pragma omp sections reduction(+ : fl) // expected-error {{reduction variable must be shared}}
451   {
452     foo();
453   }
454   static int m;
455 #pragma omp sections reduction(+ : m) // OK
456   {
457     foo();
458   }
459 #pragma omp sections reduction(task, + : m) // omp45-error 2 {{expected expression}} omp45-warning {{missing ':' after reduction identifier - ignoring}}
460   {
461     foo();
462   }
463 
464   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}}
465 }
466