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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - regression CUDA error: unspecified launch failure"
href="https://bugs.llvm.org/show_bug.cgi?id=51124">51124</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>regression CUDA error: unspecified launch failure
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
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<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>Failing since ca662297d5fbbf65a19eaa6122d7c12815d8add9
Reproducer 1
<a href="https://github.com/ye-luo/openmp-target/tree/master/tests/global_variable/global_pointer">https://github.com/ye-luo/openmp-target/tree/master/tests/global_variable/global_pointer</a>
clang++ -fopenmp -fopenmp-targets=nvptx64 -O3 global.cpp main.cpp
reproducer 2
<a href="https://github.com/ye-luo/openmp-target/blob/master/tests/target_task/taskloop_offload_nowait.cpp">https://github.com/ye-luo/openmp-target/blob/master/tests/target_task/taskloop_offload_nowait.cpp</a>
clang++ -fopenmp -fopenmp-targets=nvptx64 -O3 taskloop_offload_nowait.cpp
./a.out both give
```
CUDA error: unspecified launch failure
Libomptarget error: Call to targetDataEnd failed, abort target.
Libomptarget error: Failed to process data after launching the kernel.
Libomptarget error: Run with LIBOMPTARGET_INFO=4 to dump host-target pointer
mappings.
Libomptarget error: Source location information not present. Compile with -g or
-gline-tables-only.
Libomptarget fatal error 1: failure of target construct while offloading is
mandatory
```
-O3 is critical to reproduce the issue</pre>
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