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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - terrible diagnostic for undefined @@ version"
href="https://bugs.llvm.org/show_bug.cgi?id=40712">40712</a>
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<th>Summary</th>
<td>terrible diagnostic for undefined @@ version
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Common Code Generator Code
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Testcase:
asm(".symver pub_foo, foo@@FOO_1.2");
This results in a crash:
fatal error: error in backend: A @@ version cannot be undefined
clang-9: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 9.0.0 (trunk 353556) (llvm/trunk 353564)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-9: note: diagnostic msg: PLEASE submit a bug report to
<a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash backtrace, preprocessed source,
and associated run script.
clang-9: note: diagnostic msg: Error generating preprocessed source(s) -
ignoring input from stdin.
clang-9: note: diagnostic msg: Error generating preprocessed source(s) - no
preprocessable inputs.
This is a terrible response to this input:
We shouldn't report this as a crash, just as a regular error.
The diagnostic should say which symbol was undefined.</pre>
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