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1 // RUN: %clang_cc1 -verify -fopenmp -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 10 {{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;
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 {{calling a private constructor of class 'S'}}
57 #pragma omp task
58   ++b;
59 #pragma omp task
60 // expected-error@+1 2 {{calling a private constructor of class 'S'}}
61 #pragma omp parallel shared(a, b)
62   ++a, ++b;
63 // expected-note@+1 2 {{defined as reduction}}
64 #pragma omp parallel reduction(+ : r)
65 // expected-error@+1 2 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
66 #pragma omp task firstprivate(r)
67   ++r;
68 // expected-note@+1 2 {{defined as reduction}}
69 #pragma omp parallel reduction(+ : r)
70 #pragma omp task default(shared)
71   // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
72   ++r;
73 // expected-note@+1 2 {{defined as reduction}}
74 #pragma omp parallel reduction(+ : r)
75 #pragma omp task
76   // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
77   ++r;
78 #pragma omp parallel
79 // expected-note@+1 2 {{defined as reduction}}
80 #pragma omp for reduction(+ : r)
81   for (int i = 0; i < 10; ++i)
82 // expected-error@+1 2 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
83 #pragma omp task firstprivate(r)
84     ++r;
85 #pragma omp parallel
86 // expected-note@+1 2 {{defined as reduction}}
87 #pragma omp for reduction(+ : r)
88   for (int i = 0; i < 10; ++i)
89 #pragma omp task default(shared)
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
97     // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
98     ++r;
99 // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
100 #pragma omp task
101 // expected-error@+2 {{reduction variable must be shared}}
102 // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
103 #pragma omp for reduction(+ : r)
104   ++r;
105 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
106 #pragma omp task untied untied
107   ++r;
108 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
109 #pragma omp task mergeable mergeable
110   ++r;
111   return a + b;
112 }
113 
main(int argc,char ** argv)114 int main(int argc, char **argv) {
115   int a;
116   int &b = a;
117   S sa;
118   S &sb = sa;
119   int r;
120 #pragma omp task { // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
121   foo();
122 #pragma omp task( // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
123   foo();
124 #pragma omp task[ // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
125   foo();
126 #pragma omp task] // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
127   foo();
128 #pragma omp task) // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
129   foo();
130 #pragma omp task } // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
131   foo();
132 #pragma omp task
133 // expected-warning@+1 {{extra tokens at the end of '#pragma omp task' are ignored}}
134 #pragma omp task unknown()
135   foo();
136 L1:
137   foo();
138 #pragma omp task
139   ;
140 #pragma omp task
141   {
142     goto L1; // expected-error {{use of undeclared label 'L1'}}
143     argc++;
144   }
145 
146   for (int i = 0; i < 10; ++i) {
147     switch (argc) {
148     case (0):
149 #pragma omp task
150     {
151       foo();
152       break;    // expected-error {{'break' statement not in loop or switch statement}}
153       continue; // expected-error {{'continue' statement not in loop statement}}
154     }
155     default:
156       break;
157     }
158   }
159 #pragma omp task default(none)
160   ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
161 
162   goto L2; // expected-error {{use of undeclared label 'L2'}}
163 #pragma omp task
164 L2:
165   foo();
166 #pragma omp task
167   {
168     return 1; // expected-error {{cannot return from OpenMP region}}
169   }
170 
171   [[]] // expected-error {{an attribute list cannot appear here}}
172 #pragma omp task
173       for (int n = 0; n < 100; ++n) {
174   }
175 
176 #pragma omp task default(none)
177 #pragma omp task default(shared)
178   ++a;
179 #pragma omp task default(none)
180 #pragma omp task
181   ++a;
182 #pragma omp task default(shared)
183 #pragma omp task
184   ++a;
185 #pragma omp task
186 #pragma omp parallel
187   ++a;
188 #pragma omp task
189   ++b;
190 #pragma omp task
191 #pragma omp parallel shared(a, b)
192   ++a, ++b;
193 #pragma omp task default(none)
194 #pragma omp task default(shared)
195   ++sa;
196 #pragma omp task default(none)
197 #pragma omp task
198   // expected-error@+1 {{calling a private constructor of class 'S'}}
199   ++sa;
200 #pragma omp task
201 #pragma omp task
202   // expected-error@+1 {{calling a private constructor of class 'S'}}
203   ++sa;
204 #pragma omp task default(shared)
205 #pragma omp task
206   ++sa;
207 #pragma omp task
208 #pragma omp parallel
209   ++sa;
210 // expected-error@+2 {{calling a private constructor of class 'S'}}
211 #pragma omp task
212   ++sb;
213 // expected-error@+2 2 {{calling a private constructor of class 'S'}}
214 #pragma omp task
215 #pragma omp parallel shared(sa, sb)
216   ++sa, ++sb;
217 // expected-note@+1 2 {{defined as reduction}}
218 #pragma omp parallel reduction(+ : r)
219 // expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
220 #pragma omp task firstprivate(r)
221   // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
222   ++r;
223 // expected-note@+1 {{defined as reduction}}
224 #pragma omp parallel reduction(+ : r)
225 #pragma omp task default(shared)
226   // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
227   ++r;
228 // expected-note@+1 {{defined as reduction}}
229 #pragma omp parallel reduction(+ : r)
230 #pragma omp task
231   // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
232   ++r;
233 #pragma omp parallel
234 // expected-note@+1 2 {{defined as reduction}}
235 #pragma omp for reduction(+ : r)
236   for (int i = 0; i < 10; ++i)
237 // expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
238 #pragma omp task firstprivate(r)
239     // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
240     ++r;
241 #pragma omp parallel
242 // expected-note@+1 {{defined as reduction}}
243 #pragma omp for reduction(+ : r)
244   for (int i = 0; i < 10; ++i)
245 #pragma omp task default(shared)
246     // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
247     ++r;
248 #pragma omp parallel
249 // expected-note@+1 {{defined as reduction}}
250 #pragma omp for reduction(+ : r)
251   for (int i = 0; i < 10; ++i)
252 #pragma omp task
253     // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
254     ++r;
255 // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
256 #pragma omp task
257 // expected-error@+2 {{reduction variable must be shared}}
258 // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
259 #pragma omp for reduction(+ : r)
260   ++r;
261 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
262 #pragma omp task untied untied
263   ++r;
264 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
265 #pragma omp task mergeable mergeable
266   ++r;
267   // expected-note@+2 {{in instantiation of function template specialization 'foo<int>' requested here}}
268   // expected-note@+1 {{in instantiation of function template specialization 'foo<S>' requested here}}
269   return foo<int>() + foo<S>();
270 }
271 
272