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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang++ parser segfault on a small file g++ compiles just fine"
href="https://bugs.llvm.org/show_bug.cgi?id=52498">52498</a>
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<th>Summary</th>
<td>Clang++ parser segfault on a small file g++ compiles just fine
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>13.0
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>camille.brugel@laposte.net
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Created <span class=""><a href="attachment.cgi?id=25448" name="attach_25448" title="TAR archive containing the preprocessed cpp, the full clang++ invocation in a shell script, and the original file">attachment 25448</a> <a href="attachment.cgi?id=25448&action=edit" title="TAR archive containing the preprocessed cpp, the full clang++ invocation in a shell script, and the original file">[details]</a></span>
TAR archive containing the preprocessed cpp, the full clang++ invocation in a
shell script, and the original file
Hello,
This is going to sound ironic but I discovered this bug while refactoring the
AST of my (not yet working) compiler. It is quite generic (using template
template parameters) but g++ is able to compile it. I can reproduce it in a
small file (see attachment).
guest@eb0013e54f13:/home/cbrugel/workspace/C++/dmit$ clang++ --version
Ubuntu clang version
13.0.1-++20211029101849+08e3a5ccd952-1~exp1~20211029222435.16
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
`clang++ --std=c++20 segfault.cpp` produces a segfault in the parser.
The code I was refactoring (which does compile with clang++):
<a href="https://github.com/matovitch/dmit/blob/96d666a48c4a3ae2083cdad5b415851df61f132a/lib/include/dmit/ast/node.hpp">https://github.com/matovitch/dmit/blob/96d666a48c4a3ae2083cdad5b415851df61f132a/lib/include/dmit/ast/node.hpp</a>
Let me know if you need some more information.
Best Regards,
Camille BRUGEL</pre>
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