<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Issue</th>
<td>
<a href=https://github.com/llvm/llvm-project/issues/61230>61230</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>
[Clang][OpenMP] Bug about the linear clause with chucked dynamic schedule
</td>
</tr>
<tr>
<th>Labels</th>
<td>
openmp
</td>
</tr>
<tr>
<th>Assignees</th>
<td>
</td>
</tr>
<tr>
<th>Reporter</th>
<td>
PeixinQiao
</td>
</tr>
</table>
<pre>
```c
#include <stdio.h>
#include <stdlib.h>
void test(int k) {
int N = 20000, i, j;
j = 1;
#pragma omp parallel num_threads(4)
#pragma omp for linear(j: 2) schedule(dynamic, 200)
for (i = 1; i <= N/2; ++i) {
j = j + 2;
}
if (j != N + 1) {
printf("Iter %d, error: j = %d\n", k, j);
abort();
}
}
int main() {
for (int i = 0; i < 1000; ++i)
test(i);
return 0;
}
```
```
$ clang case.c -fopenmp && ./a.out
Iter 0, error: j = 1
Aborted (core dumped)
$ clang case.c -fopenmp && ./a.out
Iter 1, error: j = 1
Aborted (core dumped)
$ clang case.c -fopenmp && ./a.out
Iter 0, error: j = 1
Aborted (core dumped)
$ clang case.c -fopenmp && ./a.out
Iter 1, error: j = 1
Aborted (core dumped)
$ clang case.c -fopenmp && ./a.out
Iter 2, error: j = 1
Aborted (core dumped)
$ clang case.c -fopenmp && ./a.out
Iter 2, error: j = 1
Aborted (core dumped)
```
</pre>
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