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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Incorrect result with OMP_TARGET_OFFLOAD=DISABLED"
href="https://bugs.llvm.org/show_bug.cgi?id=42393">42393</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Incorrect result with OMP_TARGET_OFFLOAD=DISABLED
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Clang Compiler Support
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>xw111luoye@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>#include <iostream>
#include <omp.h>
The attached code gives correct results with OMP_TARGET_OFFLOAD=MANDATORY but
wrong results with OMP_TARGET_OFFLOAD=DISABLED
OMP_NUM_THREADS=2 OMP_TARGET_OFFLOAD=MANDATORY ./a.out
tid = 1
0 1 2 3
tid = 0
0 1 2 3
$ OMP_NUM_THREADS=2 OMP_TARGET_OFFLOAD=DISABLED ./a.out
tid = 0
0 1 0 0
tid = 1
0 0 2 3
int main()
{
const int size = 4;
#pragma omp parallel
{
int A[size];
for(int i = 0; i < size; i++)
A[i] = 0;
#pragma omp target teams distribute map(tofrom: A[:size])
for(int i = 0; i < size; i++)
{
A[i] = i;
}
#pragma omp critical
{
std::cout << "tid = " << omp_get_thread_num() << std::endl;
for(int i = 0; i < size; i++)
std::cout << " " << A[i];
std::cout << std::endl;
}
}
}</pre>
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