<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/83509>83509</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-offload-bundler mixes symbols from different objects when unbundling an archive
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          LU-JOHN
      </td>
    </tr>
</table>

<pre>
    Change to clang/lib/Driver/OffloadBundler.cpp in commit https://github.com/llvm/llvm-project/pull/81700 causes clang-offload-bundler to join symbols from different objects when unbundling an archive:

Source file s.cpp:
> void bazball() {
> } 

Source file t.cpp:
> void foobar() {
> } 

Commands:

> clang++ -c s.cpp  -o s.o;
> clang-offload-bundler -type=o  -targets=host-x86_64-unknown-linux-gnu -input=s.o  -output=s_bundled.o;
> clang++ -c t.cpp  -o t.o;
> clang-offload-bundler -type=o  -targets=host-x86_64-unknown-linux-gnu -input=t.o  -output=t_bundled.o;
> llvm-ar cr bundled.a s_bundled.o t_bundled.o
> clang-offload-bundler  -unbundle --targets=host-x86_64-unknown-linux-gnu -type=aoo -input=bundled.a -output=t_list.txt; nm \`cat t_list.txt\`

The output of the nm command without the change is:

> bundled-742762.o:
> 0000000000000000 T _Z7bazballv
> bundled-61506b.o:
> 0000000000000000 T _Z6foobarv 
> 

The output with the change is:

> /tmp/bundled-e7ca35.o:s_bundled.o:
> 0000000000000000 T _Z7bazballvt_bundled.o:
> 0000000000000000 T _Z6foobarv
> 
> /tmp/bundled-5ea078.o:s_bundled.o:
> 0000000000000000 T _Z7bazballvt_bundled.o:
> 0000000000000000 T _Z6foobarv 
</pre>
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