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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 - CUDA pure virtual inheritance issue"
href="https://bugs.llvm.org/show_bug.cgi?id=49839">49839</a>
</td>
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<th>Summary</th>
<td>CUDA pure virtual inheritance issue
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>CUDA
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>kjain14@utexas.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24719" name="attach_24719" title="Program showing issue">attachment 24719</a> <a href="attachment.cgi?id=24719&action=edit" title="Program showing issue">[details]</a></span>
Program showing issue
CUDA pure virtual inheritance issue:
Summary:
The attached program initializes a class with a pure virtual method and
overrides this pure virtual method in a child class.
This program fails to compile in Clang CUDA with no optimization applied.
However, this program does compile under certain
optimization settings: -O1, and -O2.
Description:
The attached program initializes a class with a pure virtual method, and a
child class which overrides this pure virtual method.
We use Clang Trunk (SHA: 1cc9d949a1233e8b17b3b345ccb67ca7296c1a6c) to compile
the attached program.
Compiling the attached program in Clang CUDA fails, while also outputting the
following errors:
ptxas fatal : Cannot take address of function '__cxa_pure_virtual'
clang-13: error: ptxas command failed with exit code 255 (use -v to see
invocation)
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
1cc9d949a1233e8b17b3b345ccb67ca7296c1a6c)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/kjain/projects/llvm-project/build/bin
clang-13: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/22-3e3111.cu
clang-13: note: diagnostic msg: /tmp/22-aee9af.cu
clang-13: note: diagnostic msg: /tmp/22-3e3111.sh
clang-13: note: diagnostic msg:
********************
This same program compiles successfully under optimization settings -O1 and
-O2, while failing under the optimization setting -O0.
This program also compiles successfully in nvcc.
The files outputted by clang-13 are also attached.</pre>
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</p>
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