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 typedef void **omp_allocator_handle_t;
10 extern const omp_allocator_handle_t omp_default_mem_alloc;
11 extern const omp_allocator_handle_t omp_large_cap_mem_alloc;
12 extern const omp_allocator_handle_t omp_const_mem_alloc;
13 extern const omp_allocator_handle_t omp_high_bw_mem_alloc;
14 extern const omp_allocator_handle_t omp_low_lat_mem_alloc;
15 extern const omp_allocator_handle_t omp_cgroup_mem_alloc;
16 extern const omp_allocator_handle_t omp_pteam_mem_alloc;
17 extern const omp_allocator_handle_t omp_thread_mem_alloc;
18 
19 void xxx(int argc) {
20   int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
21 #pragma omp parallel master taskloop simd reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
22   for (int i = 0; i < 10; ++i)
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 master taskloop simd reduction(+:ref)
35   for (int i = 0; i < 10; ++i)
36     foo();
37 }
38 
39 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
40 extern S1 a;
41 class S2 {
42   mutable int a;
43   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
44 
45 public:
46   S2() : a(0) {}
47   S2(S2 &s2) : a(s2.a) {}
48   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
49   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
50 };
51 const float S2::S2sc = 0;
52 S2 b;                     // expected-note 3 {{'b' defined here}}
53 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
54 class S3 {
55   int a;
56 
57 public:
58   int b;
59   S3() : a(0) {}
60   S3(const S3 &s3) : a(s3.a) {}
61   S3 operator+(const S3 &arg1) { return arg1; }
62 };
63 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
64 S3 c;               // expected-note 3 {{'c' defined here}}
65 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
66 extern const int f; // expected-note 4 {{'f' declared here}}
67 class S4 {
68   int a;
69   S4(); // expected-note {{implicitly declared private here}}
70   S4(const S4 &s4);
71   S4 &operator+(const S4 &arg) { return (*this); }
72 
73 public:
74   S4(int v) : a(v) {}
75 };
76 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
77 class S5 {
78   int a:32;
79   S5() : a(0) {} // expected-note {{implicitly declared private here}}
80   S5(const S5 &s5) : a(s5.a) {}
81   S5 &operator+(const S5 &arg);
82 
83 public:
84   S5(int v) : a(v) {}
85 };
86 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}}
87 #if __cplusplus >= 201103L // C++11 or later
88 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
89 #endif
90   int a;
91 
92 public:
93   S6() : a(6) {}
94   operator int() { return 6; }
95 } o;
96 
97 struct S7 {
98   int a: 32;
99   S7() {
100 #pragma omp parallel master taskloop simd reduction(+:a) // expected-error {{expected addressable reduction item for the task-based directives}}
101     for (int i = 0; i < 10; ++i)
102       ++a;
103   }
104 };
105 
106 S3 h, k;
107 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
108 
109 template <class T>       // expected-note {{declared here}}
110 T tmain(T argc) {
111   const T d = T();       // expected-note 4 {{'d' defined here}}
112   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
113   T qa[5] = {T()};
114   T i, z;
115   T &j = i;                        // expected-note 4 {{'j' defined here}}
116   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
117   const T &r = da[(int)i];         // expected-note 2 {{'r' defined here}}
118   T &q = qa[(int)i];               // expected-note 2 {{'q' defined here}}
119   T fl;
120 #pragma omp parallel master taskloop simd reduction // expected-error {{expected '(' after 'reduction'}}
121   for (int i = 0; i < 10; ++i)
122     foo();
123 #pragma omp parallel master taskloop simd reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel master taskloop simd' are ignored}}
124   for (int i = 0; i < 10; ++i)
125     foo();
126 #pragma omp parallel master taskloop simd reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
127   for (int i = 0; i < 10; ++i)
128     foo();
129 #pragma omp parallel master taskloop simd reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
130   for (int i = 0; i < 10; ++i)
131     foo();
132 #pragma omp parallel master taskloop simd reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
133   for (int i = 0; i < 10; ++i)
134     foo();
135 #pragma omp parallel master taskloop simd reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
136   for (int i = 0; i < 10; ++i)
137     foo();
138 #pragma omp parallel master taskloop simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
139   for (int i = 0; i < 10; ++i)
140     foo();
141 #pragma omp parallel master taskloop simd reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
142   for (int i = 0; i < 10; ++i)
143     foo();
144 #pragma omp parallel master taskloop simd 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 master taskloop simd reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
148   for (int i = 0; i < 10; ++i)
149     foo();
150 #pragma omp parallel master taskloop simd 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'}}
151   for (int i = 0; i < 10; ++i)
152     foo();
153 #pragma omp parallel master taskloop simd 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 '('}}
154   for (int i = 0; i < 10; ++i)
155     foo();
156 #pragma omp parallel master taskloop simd reduction(^ : T) // expected-error {{'T' does not refer to a value}}
157   for (int i = 0; i < 10; ++i)
158     foo();
159 #pragma omp parallel master taskloop simd 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'}}
160   for (int i = 0; i < 10; ++i)
161     foo();
162 #pragma omp parallel master taskloop simd 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}}
163   for (int i = 0; i < 10; ++i)
164     foo();
165 #pragma omp parallel master taskloop simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
166   for (int i = 0; i < 10; ++i)
167     foo();
168 #pragma omp parallel master taskloop simd reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
169   for (int i = 0; i < 10; ++i)
170     foo();
171 #pragma omp parallel master taskloop simd reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
172   for (int i = 0; i < 10; ++i)
173     foo();
174 #pragma omp parallel master taskloop simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
175   for (int i = 0; i < 10; ++i)
176     foo();
177 #pragma omp parallel master taskloop simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
178   for (int i = 0; i < 10; ++i)
179     foo();
180 #pragma omp parallel master taskloop simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
181   for (int i = 0; i < 10; ++i)
182     foo();
183 #pragma omp parallel master taskloop simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
184   for (int i = 0; i < 10; ++i)
185     foo();
186 #pragma omp parallel master taskloop simd reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
187   for (int i = 0; i < 10; ++i)
188     foo();
189 #pragma omp parallel master taskloop simd reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
190   for (int i = 0; i < 10; ++i)
191     foo();
192 #pragma omp parallel master taskloop simd private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{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 private(k)
196 #pragma omp parallel master taskloop simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
197   for (int i = 0; i < 10; ++i)
198     foo();
199 #pragma omp parallel master taskloop simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
200   for (int i = 0; i < 10; ++i)
201     foo();
202 #pragma omp parallel master taskloop simd reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
203   for (int i = 0; i < 10; ++i)
204     foo();
205 #pragma omp parallel shared(i)
206 #pragma omp parallel reduction(min : i)
207 #pragma omp parallel master taskloop simd reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
208   for (int i = 0; i < 10; ++i)
209     foo();
210 #pragma omp parallel private(fl)
211 #pragma omp parallel master taskloop simd reduction(+ : fl) allocate(omp_thread_mem_alloc: fl) // expected-warning 2 {{allocator with the 'thread' trait access has unspecified behavior on 'parallel master taskloop simd' directive}}
212   for (int i = 0; i < 10; ++i)
213     foo();
214 #pragma omp parallel reduction(* : fl)
215 #pragma omp parallel master taskloop simd reduction(+ : fl)
216   for (int i = 0; i < 10; ++i)
217     foo();
218 
219   return T();
220 }
221 
222 namespace A {
223 double x;
224 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
225 }
226 namespace B {
227 using A::x;
228 }
229 
230 int main(int argc, char **argv) {
231   const int d = 5;       // expected-note 2 {{'d' defined here}}
232   const int da[5] = {0}; // expected-note {{'da' defined here}}
233   int qa[5] = {0};
234   S4 e(4);
235   S5 g(5);
236   int i, z;
237   int &j = i;                      // expected-note 2 {{'j' defined here}}
238   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
239   const int &r = da[i];            // expected-note {{'r' defined here}}
240   int &q = qa[i];                  // expected-note {{'q' defined here}}
241   float fl;
242 #pragma omp parallel master taskloop simd reduction // expected-error {{expected '(' after 'reduction'}}
243   for (int i = 0; i < 10; ++i)
244     foo();
245 #pragma omp parallel master taskloop simd reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel master taskloop simd' are ignored}}
246   for (int i = 0; i < 10; ++i)
247     foo();
248 #pragma omp parallel master taskloop simd reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
249   for (int i = 0; i < 10; ++i)
250     foo();
251 #pragma omp parallel master taskloop simd reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
252   for (int i = 0; i < 10; ++i)
253     foo();
254 #pragma omp parallel master taskloop simd reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
255   for (int i = 0; i < 10; ++i)
256     foo();
257 #pragma omp parallel master taskloop simd reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
258   for (int i = 0; i < 10; ++i)
259     foo();
260 #pragma omp parallel master taskloop simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
261   for (int i = 0; i < 10; ++i)
262     foo();
263 #pragma omp parallel master taskloop simd reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
264   for (int i = 0; i < 10; ++i)
265     foo();
266 #pragma omp parallel master taskloop simd reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
267   for (int i = 0; i < 10; ++i)
268     foo();
269 #pragma omp parallel master taskloop simd reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
270   for (int i = 0; i < 10; ++i)
271     foo();
272 #pragma omp parallel master taskloop simd reduction(~ : argc) // expected-error {{expected unqualified-id}}
273   for (int i = 0; i < 10; ++i)
274     foo();
275 #pragma omp parallel master taskloop simd reduction(&& : argc, z)
276   for (int i = 0; i < 10; ++i)
277     foo();
278 #pragma omp parallel master taskloop simd reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
279   for (int i = 0; i < 10; ++i)
280     foo();
281 #pragma omp parallel master taskloop simd 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'}}
282   for (int i = 0; i < 10; ++i)
283     foo();
284 #pragma omp parallel master taskloop simd 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}}
285   for (int i = 0; i < 10; ++i)
286     foo();
287 #pragma omp parallel master taskloop simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
288   for (int i = 0; i < 10; ++i)
289     foo();
290 #pragma omp parallel master taskloop simd reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
291   for (int i = 0; i < 10; ++i)
292     foo();
293 #pragma omp parallel master taskloop simd reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
294   for (int i = 0; i < 10; ++i)
295     foo();
296 #pragma omp parallel master taskloop simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
297   for (int i = 0; i < 10; ++i)
298     foo();
299 #pragma omp parallel master taskloop simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
300   for (int i = 0; i < 10; ++i)
301     foo();
302 #pragma omp parallel master taskloop simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
303   for (int i = 0; i < 10; ++i)
304     foo();
305 #pragma omp parallel master taskloop simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
306   for (int i = 0; i < 10; ++i)
307     foo();
308 #pragma omp parallel master taskloop simd reduction(& : e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{invalid operands to binary expression ('S4' and 'S4')}} expected-error {{calling a private constructor of class 'S5'}} expected-error {{invalid operands to binary expression ('S5' and 'S5')}}
309   for (int i = 0; i < 10; ++i)
310     foo();
311 #pragma omp parallel master taskloop simd reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
312   for (int i = 0; i < 10; ++i)
313     foo();
314 #pragma omp parallel master taskloop simd reduction(+ : o) // expected-error {{no viable overloaded '='}}
315   for (int i = 0; i < 10; ++i)
316     foo();
317 #pragma omp parallel master taskloop simd private(i), reduction(+ : j), reduction(+ : q) // 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 private(k)
321 #pragma omp parallel master taskloop simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
322   for (int i = 0; i < 10; ++i)
323     foo();
324 #pragma omp parallel master taskloop simd reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
325   for (int i = 0; i < 10; ++i)
326     foo();
327 #pragma omp parallel master taskloop simd reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
328   for (int i = 0; i < 10; ++i)
329     foo();
330 #pragma omp parallel shared(i)
331 #pragma omp parallel reduction(min : i)
332 #pragma omp parallel master taskloop simd reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
333   for (int i = 0; i < 10; ++i)
334     foo();
335 #pragma omp parallel private(fl)
336 #pragma omp parallel master taskloop simd reduction(+ : fl)
337   for (int i = 0; i < 10; ++i)
338     foo();
339 #pragma omp parallel reduction(* : fl)
340 #pragma omp parallel master taskloop simd reduction(+ : fl)
341   for (int i = 0; i < 10; ++i)
342     foo();
343   static int m;
344 #pragma omp parallel master taskloop simd reduction(+ : m) // OK
345   for (int i = 0; i < 10; ++i)
346     m++;
347 #pragma omp parallel master taskloop simd nogroup reduction(+ : m) // expected-error {{'reduction' clause cannot be used with 'nogroup' clause}}
348   for (int i = 0; i < 10; ++i)
349     m++;
350 
351   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}}
352 }
353