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 target parallel for 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 target parallel for 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;
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 S3 h, k;
98 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
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 target parallel for reduction // expected-error {{expected '(' after 'reduction'}}
112   for (int i = 0; i < 10; ++i)
113     foo();
114 #pragma omp target parallel for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp target parallel for' are ignored}}
115   for (int i = 0; i < 10; ++i)
116     foo();
117 #pragma omp target parallel for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
118   for (int i = 0; i < 10; ++i)
119     foo();
120 #pragma omp target parallel for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
121   for (int i = 0; i < 10; ++i)
122     foo();
123 #pragma omp target parallel for reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
124   for (int i = 0; i < 10; ++i)
125     foo();
126 #pragma omp target parallel for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
127   for (int i = 0; i < 10; ++i)
128     foo();
129 #pragma omp target parallel for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
130   for (int i = 0; i < 10; ++i)
131     foo();
132 #pragma omp target parallel for reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
133   for (int i = 0; i < 10; ++i)
134     foo();
135 #pragma omp target 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')}}
136   for (int i = 0; i < 10; ++i)
137     foo();
138 #pragma omp target parallel for reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
139   for (int i = 0; i < 10; ++i)
140     foo();
141 #pragma omp target 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'}}
142   for (int i = 0; i < 10; ++i)
143     foo();
144 #pragma omp target 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 '('}}
145   for (int i = 0; i < 10; ++i)
146     foo();
147 #pragma omp target parallel for reduction(^ : T) // expected-error {{'T' does not refer to a value}}
148   for (int i = 0; i < 10; ++i)
149     foo();
150 #pragma omp target 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'}}
151   for (int i = 0; i < 10; ++i)
152     foo();
153 #pragma omp target 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}}
154   for (int i = 0; i < 10; ++i)
155     foo();
156 #pragma omp target parallel for reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
157   for (int i = 0; i < 10; ++i)
158     foo();
159 #pragma omp target parallel for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
160   for (int i = 0; i < 10; ++i)
161     foo();
162 #pragma omp target parallel for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
163   for (int i = 0; i < 10; ++i)
164     foo();
165 #pragma omp target parallel for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
166   for (int i = 0; i < 10; ++i)
167     foo();
168 #pragma omp target parallel for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
169   for (int i = 0; i < 10; ++i)
170     foo();
171 #pragma omp target parallel for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
172   for (int i = 0; i < 10; ++i)
173     foo();
174 #pragma omp target parallel for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
175   for (int i = 0; i < 10; ++i)
176     foo();
177 #pragma omp target parallel for reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
178   for (int i = 0; i < 10; ++i)
179     foo();
180 #pragma omp target parallel for reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
181   for (int i = 0; i < 10; ++i)
182     foo();
183 #pragma omp target parallel for private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
184   for (int i = 0; i < 10; ++i)
185     foo();
186 #pragma omp parallel private(k)
187 #pragma omp target parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
188   for (int i = 0; i < 10; ++i)
189     foo();
190 #pragma omp target parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
191   for (int i = 0; i < 10; ++i)
192     foo();
193 #pragma omp target parallel for reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
194   for (int i = 0; i < 10; ++i)
195     foo();
196 #pragma omp parallel shared(i)
197 #pragma omp parallel reduction(min : i)
198 #pragma omp target parallel for reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
199   for (int i = 0; i < 10; ++i)
200     foo();
201 #pragma omp parallel private(fl)
202 #pragma omp target parallel for reduction(+ : fl)
203   for (int i = 0; i < 10; ++i)
204     foo();
205 #pragma omp parallel reduction(* : fl)
206 #pragma omp target parallel for reduction(+ : fl)
207   for (int i = 0; i < 10; ++i)
208     foo();
209 
210   return T();
211 }
212 
213 namespace A {
214 double x;
215 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
216 }
217 namespace B {
218 using A::x;
219 }
220 
221 int main(int argc, char **argv) {
222   const int d = 5;       // expected-note 2 {{'d' defined here}}
223   const int da[5] = {0}; // expected-note {{'da' defined here}}
224   int qa[5] = {0};
225   S4 e(4);
226   S5 g(5);
227   int i, z;
228   int &j = i;                      // expected-note 2 {{'j' defined here}}
229   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
230   const int &r = da[i];            // expected-note {{'r' defined here}}
231   int &q = qa[i];                  // expected-note {{'q' defined here}}
232   float fl;
233 #pragma omp target parallel for reduction // expected-error {{expected '(' after 'reduction'}}
234   for (int i = 0; i < 10; ++i)
235     foo();
236 #pragma omp target parallel for reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp target parallel for' are ignored}}
237   for (int i = 0; i < 10; ++i)
238     foo();
239 #pragma omp target parallel for reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
240   for (int i = 0; i < 10; ++i)
241     foo();
242 #pragma omp target parallel for reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
243   for (int i = 0; i < 10; ++i)
244     foo();
245 #pragma omp target parallel for reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
246   for (int i = 0; i < 10; ++i)
247     foo();
248 #pragma omp target parallel for reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
249   for (int i = 0; i < 10; ++i)
250     foo();
251 #pragma omp target parallel for reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
252   for (int i = 0; i < 10; ++i)
253     foo();
254 #pragma omp target parallel for reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
255   for (int i = 0; i < 10; ++i)
256     foo();
257 #pragma omp target parallel for reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
258   for (int i = 0; i < 10; ++i)
259     foo();
260 #pragma omp target parallel for reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
261   for (int i = 0; i < 10; ++i)
262     foo();
263 #pragma omp target parallel for reduction(~ : argc) // expected-error {{expected unqualified-id}}
264   for (int i = 0; i < 10; ++i)
265     foo();
266 #pragma omp target parallel for reduction(&& : argc, z)
267   for (int i = 0; i < 10; ++i)
268     foo();
269 #pragma omp target parallel for reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
270   for (int i = 0; i < 10; ++i)
271     foo();
272 #pragma omp target parallel 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'}}
273   for (int i = 0; i < 10; ++i)
274     foo();
275 #pragma omp target 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}}
276   for (int i = 0; i < 10; ++i)
277     foo();
278 #pragma omp target parallel for reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
279   for (int i = 0; i < 10; ++i)
280     foo();
281 #pragma omp target parallel for reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
282   for (int i = 0; i < 10; ++i)
283     foo();
284 #pragma omp target parallel for reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
285   for (int i = 0; i < 10; ++i)
286     foo();
287 #pragma omp target parallel for reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
288   for (int i = 0; i < 10; ++i)
289     foo();
290 #pragma omp target parallel for reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
291   for (int i = 0; i < 10; ++i)
292     foo();
293 #pragma omp target parallel for reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
294   for (int i = 0; i < 10; ++i)
295     foo();
296 #pragma omp target parallel for reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
297   for (int i = 0; i < 10; ++i)
298     foo();
299 #pragma omp target parallel for 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')}}
300   for (int i = 0; i < 10; ++i)
301     foo();
302 #pragma omp target parallel for reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
303   for (int i = 0; i < 10; ++i)
304     foo();
305 #pragma omp target parallel for reduction(+ : o) // expected-error {{no viable overloaded '='}}
306   for (int i = 0; i < 10; ++i)
307     foo();
308 #pragma omp target parallel for private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
309   for (int i = 0; i < 10; ++i)
310     foo();
311 #pragma omp parallel private(k)
312 #pragma omp target parallel for reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
313   for (int i = 0; i < 10; ++i)
314     foo();
315 #pragma omp target parallel for reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
316   for (int i = 0; i < 10; ++i)
317     foo();
318 #pragma omp target parallel for reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
319   for (int i = 0; i < 10; ++i)
320     foo();
321 #pragma omp parallel shared(i)
322 #pragma omp parallel reduction(min : i)
323 #pragma omp target parallel for reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
324   for (int i = 0; i < 10; ++i)
325     foo();
326 #pragma omp parallel private(fl)
327 #pragma omp target parallel for reduction(+ : fl)
328   for (int i = 0; i < 10; ++i)
329     foo();
330 #pragma omp parallel reduction(* : fl)
331 #pragma omp target parallel for reduction(+ : fl)
332   for (int i = 0; i < 10; ++i)
333     foo();
334   static int m;
335 #pragma omp target parallel for allocate(omp_thread_mem_alloc: m) reduction(+ : m) // expected-warning {{allocator with the 'thread' trait access has unspecified behavior on 'target parallel for' directive}}
336   for (int i = 0; i < 10; ++i)
337     m++;
338 
339   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}}
340 }
341