1 // RUN: %clang_cc1 -verify -fopenmp=libiomp5 -ferror-limit 100 -std=c++11 -o - %s
2
foo()3 void foo() {
4 }
5
6 #pragma omp task // expected-error {{unexpected OpenMP directive '#pragma omp task'}}
7
8 class S {
S(const S & s)9 S(const S &s) { a = s.a + 12; } // expected-note 6 {{implicitly declared private here}}
10 int a;
11
12 public:
S()13 S() : a(0) {}
S(int a)14 S(int a) : a(a) {}
operator int()15 operator int() { return a; }
operator ++()16 S &operator++() { return *this; }
operator +(const S &)17 S operator+(const S &) { return *this; }
18 };
19
20 class S1 {
21 int a;
22
23 public:
S1()24 S1() : a(0) {}
operator ++()25 S1 &operator++() { return *this; }
26 S1(const S1 &) = delete; // expected-note 2 {{'S1' has been explicitly marked deleted here}}
27 };
28
29 template <class T>
foo()30 int foo() {
31 T a;
32 T &b = a; // expected-note 4 {{'b' defined here}}
33 int r;
34 S1 s1;
35 // expected-error@+1 2 {{call to deleted constructor of 'S1'}}
36 #pragma omp task
37 // expected-note@+1 2 {{predetermined as a firstprivate in a task construct here}}
38 ++s1;
39 #pragma omp task default(none)
40 #pragma omp task default(shared)
41 ++a;
42 #pragma omp task default(none)
43 #pragma omp task
44 // expected-error@+1 {{calling a private constructor of class 'S'}}
45 ++a;
46 #pragma omp task
47 #pragma omp task
48 // expected-error@+1 {{calling a private constructor of class 'S'}}
49 ++a;
50 #pragma omp task default(shared)
51 #pragma omp task
52 ++a;
53 #pragma omp task
54 #pragma omp parallel
55 ++a;
56 // expected-error@+2 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
57 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
58 #pragma omp task
59 // expected-note@+1 2 {{used here}}
60 ++b;
61 // expected-error@+2 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
62 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
63 #pragma omp task
64 // expected-error@+2 {{calling a private constructor of class 'S'}}
65 // expected-note@+1 2 {{used here}}
66 #pragma omp parallel shared(a, b)
67 ++a, ++b;
68 // expected-note@+1 3 {{defined as reduction}}
69 #pragma omp parallel reduction(+ : r)
70 // expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
71 #pragma omp task firstprivate(r)
72 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
73 ++r;
74 // expected-note@+1 2 {{defined as reduction}}
75 #pragma omp parallel reduction(+ : r)
76 #pragma omp task default(shared)
77 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
78 ++r;
79 // expected-note@+1 2 {{defined as reduction}}
80 #pragma omp parallel reduction(+ : r)
81 #pragma omp task
82 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
83 ++r;
84 #pragma omp parallel
85 // expected-note@+1 3 {{defined as reduction}}
86 #pragma omp for reduction(+ : r)
87 for (int i = 0; i < 10; ++i)
88 // expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
89 #pragma omp task firstprivate(r)
90 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
91 ++r;
92 #pragma omp parallel
93 // expected-note@+1 2 {{defined as reduction}}
94 #pragma omp for reduction(+ : r)
95 for (int i = 0; i < 10; ++i)
96 #pragma omp task default(shared)
97 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
98 ++r;
99 #pragma omp parallel
100 // expected-note@+1 2 {{defined as reduction}}
101 #pragma omp for reduction(+ : r)
102 for (int i = 0; i < 10; ++i)
103 #pragma omp task
104 // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
105 ++r;
106 // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
107 #pragma omp task
108 // expected-error@+2 {{reduction variable must be shared}}
109 // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
110 #pragma omp for reduction(+ : r)
111 ++r;
112 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
113 #pragma omp task untied untied
114 ++r;
115 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
116 #pragma omp task mergeable mergeable
117 ++r;
118 return a + b;
119 }
120
main(int argc,char ** argv)121 int main(int argc, char **argv) {
122 int a;
123 int &b = a; // expected-note 2 {{'b' defined here}}
124 S sa;
125 S &sb = sa; // expected-note 2 {{'sb' defined here}}
126 int r;
127 #pragma omp task { // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
128 foo();
129 #pragma omp task( // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
130 foo();
131 #pragma omp task[ // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
132 foo();
133 #pragma omp task] // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
134 foo();
135 #pragma omp task) // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
136 foo();
137 #pragma omp task } // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
138 foo();
139 #pragma omp task
140 // expected-warning@+1 {{extra tokens at the end of '#pragma omp task' are ignored}}
141 #pragma omp task unknown()
142 foo();
143 L1:
144 foo();
145 #pragma omp task
146 ;
147 #pragma omp task
148 {
149 goto L1; // expected-error {{use of undeclared label 'L1'}}
150 argc++;
151 }
152
153 for (int i = 0; i < 10; ++i) {
154 switch (argc) {
155 case (0):
156 #pragma omp task
157 {
158 foo();
159 break; // expected-error {{'break' statement not in loop or switch statement}}
160 continue; // expected-error {{'continue' statement not in loop statement}}
161 }
162 default:
163 break;
164 }
165 }
166 #pragma omp task default(none)
167 ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
168
169 goto L2; // expected-error {{use of undeclared label 'L2'}}
170 #pragma omp task
171 L2:
172 foo();
173 #pragma omp task
174 {
175 return 1; // expected-error {{cannot return from OpenMP region}}
176 }
177
178 [[]] // expected-error {{an attribute list cannot appear here}}
179 #pragma omp task
180 for (int n = 0; n < 100; ++n) {
181 }
182
183 #pragma omp task default(none)
184 #pragma omp task default(shared)
185 ++a;
186 #pragma omp task default(none)
187 #pragma omp task
188 ++a;
189 #pragma omp task default(shared)
190 #pragma omp task
191 ++a;
192 #pragma omp task
193 #pragma omp parallel
194 ++a;
195 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
196 #pragma omp task
197 // expected-note@+1 {{used here}}
198 ++b;
199 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
200 #pragma omp task
201 // expected-note@+1 {{used here}}
202 #pragma omp parallel shared(a, b)
203 ++a, ++b;
204 #pragma omp task default(none)
205 #pragma omp task default(shared)
206 ++sa;
207 #pragma omp task default(none)
208 #pragma omp task
209 // expected-error@+1 {{calling a private constructor of class 'S'}}
210 ++sa;
211 #pragma omp task
212 #pragma omp task
213 // expected-error@+1 {{calling a private constructor of class 'S'}}
214 ++sa;
215 #pragma omp task default(shared)
216 #pragma omp task
217 ++sa;
218 #pragma omp task
219 #pragma omp parallel
220 ++sa;
221 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
222 #pragma omp task
223 // expected-note@+1 {{used here}}
224 ++sb;
225 // expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
226 #pragma omp task
227 // expected-error@+2 {{calling a private constructor of class 'S'}}
228 // expected-note@+1 {{used here}}
229 #pragma omp parallel shared(sa, sb)
230 ++sa, ++sb;
231 // expected-note@+1 2 {{defined as reduction}}
232 #pragma omp parallel reduction(+ : r)
233 // expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
234 #pragma omp task firstprivate(r)
235 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
236 ++r;
237 // expected-note@+1 {{defined as reduction}}
238 #pragma omp parallel reduction(+ : r)
239 #pragma omp task default(shared)
240 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
241 ++r;
242 // expected-note@+1 {{defined as reduction}}
243 #pragma omp parallel reduction(+ : r)
244 #pragma omp task
245 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
246 ++r;
247 #pragma omp parallel
248 // expected-note@+1 2 {{defined as reduction}}
249 #pragma omp for reduction(+ : r)
250 for (int i = 0; i < 10; ++i)
251 // expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
252 #pragma omp task firstprivate(r)
253 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
254 ++r;
255 #pragma omp parallel
256 // expected-note@+1 {{defined as reduction}}
257 #pragma omp for reduction(+ : r)
258 for (int i = 0; i < 10; ++i)
259 #pragma omp task default(shared)
260 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
261 ++r;
262 #pragma omp parallel
263 // expected-note@+1 {{defined as reduction}}
264 #pragma omp for reduction(+ : r)
265 for (int i = 0; i < 10; ++i)
266 #pragma omp task
267 // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
268 ++r;
269 // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
270 #pragma omp task
271 // expected-error@+2 {{reduction variable must be shared}}
272 // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
273 #pragma omp for reduction(+ : r)
274 ++r;
275 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
276 #pragma omp task untied untied
277 ++r;
278 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
279 #pragma omp task mergeable mergeable
280 ++r;
281 // expected-note@+2 {{in instantiation of function template specialization 'foo<int>' requested here}}
282 // expected-note@+1 {{in instantiation of function template specialization 'foo<S>' requested here}}
283 return foo<int>() + foo<S>();
284 }
285
286