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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion "faked up lambda definition?" failed."
href="https://bugs.llvm.org/show_bug.cgi?id=32556">32556</a>
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<tr>
<th>Summary</th>
<td>Assertion "faked up lambda definition?" failed.
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Modules
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>panin@fb.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18240" name="attach_18240" title="Archive with files involved">attachment 18240</a> <a href="attachment.cgi?id=18240&action=edit" title="Archive with files involved">[details]</a></span>
Archive with files involved
Clang crashes in assertion when trying to build with -fmodules enabled:
void clang::ASTDeclReader::MergeDefinitionData(clang::CXXRecordDecl*,
clang::CXXRecordDecl::DefinitionData&&): Assertion `!DD.IsLambda &&
!MergeDD.IsLambda && "faked up lambda definition?"' failed.
Repro:
clang++ --std=c++14 -I . -Rmodule-build -fmodules -fcxx-modules
-fmodules-cache-path=./modules_out/_module_cache -c main.cpp -o main.o
Stack trace: see stack.txt in archive.
If I build without modules then it works fine:
clang++ --std=c++14 -I . -c main.cpp -o main.o
Tested this using latest clang:
$ clang++ --version
clang version 5.0.0 (<a href="http://llvm.org/git/clang.git">http://llvm.org/git/clang.git</a>
6abfe5cfd2160d5c1c8594673ae995151afad6f5) (<a href="http://llvm.org/git/llvm.git">http://llvm.org/git/llvm.git</a>
54eda943893db59f794921a0affaa862b0ae0452)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /data/users/panin/llvm-hacking/build/bin</pre>
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