1 // RUN: %libomp-compile-and-run
2
3 // UNSUPPORTED: gcc-4, gcc-5, gcc-6, gcc-7, gcc-8
4
5 #include <stdio.h>
6 #include <stdlib.h>
7
8 int a = 0, b = 1;
9
main(int argc,char ** argv)10 int main(int argc, char **argv) {
11
12 #pragma omp parallel
13 #pragma omp single
14 {
15 #pragma omp taskgroup task_reduction(+: a) task_reduction(*: b)
16 {
17 int i;
18 for (i = 1; i <= 5; ++i) {
19 #pragma omp task in_reduction(+: a) in_reduction(*: b)
20 {
21 a += i;
22 b *= i;
23 #pragma omp task in_reduction(+: a)
24 {
25 a += i;
26 }
27 }
28 }
29 }
30 }
31
32 if (a != 30) {
33 fprintf(stderr, "error: a != 30. Instead a = %d\n", a);
34 exit(EXIT_FAILURE);
35 }
36 if (b != 120) {
37 fprintf(stderr, "error: b != 120. Instead b = %d\n", b);
38 exit(EXIT_FAILURE);
39 }
40
41 return EXIT_SUCCESS;
42 }
43