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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Exceptions don't work when used with -fvisibility=hidden"
href="https://bugs.llvm.org/show_bug.cgi?id=52579">52579</a>
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<th>Summary</th>
<td>Exceptions don't work when used with -fvisibility=hidden
</td>
</tr>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>13.0
</td>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
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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>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>schopf.dan@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=25466" name="attach_25466" title="exception source file">attachment 25466</a> <a href="attachment.cgi?id=25466&action=edit" title="exception source file">[details]</a></span>
exception source file
Using exceptions in shared libraries compiled with -fvisibility=hidden yields
the wrong results
Steps to Reproduce:
1. Compile the attached files with the following commands:
clang++ -shared -stdlib=libc++ -fvisibility=hidden exception.cpp -o
libexception.so
clang++ -stdlib=libc++ test.cpp libexception.so -o exception_test
2. Run the exception_test binary
Actual Results:
The output is "Error value = -2"
Expected Results:
The output should be "Error value = 1"
This error cannot be reproduced when either removing the -fvisibility=hidden
switch or
when using -stdlib=libstdc++. So using -stdlib=libstdc++ together with
-fvisibility=hidden
produces the correct output.
Reproduced with clang-13 on Arch Linux.</pre>
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