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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - segfault in llvm::DAGTypeLegalizer::DisintegrateMERGE_VALUES"
href="https://bugs.llvm.org/show_bug.cgi?id=38730">38730</a>
</td>
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<th>Summary</th>
<td>segfault in llvm::DAGTypeLegalizer::DisintegrateMERGE_VALUES
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ndesaulniers@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>When compiling drivers/android/binder.o in the Linux kernel targeting 32b x86,
I see the following crash in clang:
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module
'drivers/android/binder.c'.
4. Running pass 'X86 DAG->DAG Instruction Selection' on function
'@binder_ioctl_write_read'
#0 0x000055d0eec53c8a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/android1/llvm/build/bin/clang-7+0x2166c8a)
#1 0x000055d0eec522d4 llvm::sys::RunSignalHandlers()
(/android1/llvm/build/bin/clang-7+0x21652d4)
#2 0x000055d0eec52402 SignalHandler(int)
(/android1/llvm/build/bin/clang-7+0x2165402)
#3 0x00007f20a9f140c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x110c0)
#4 0x000055d0ef5926b2
llvm::DAGTypeLegalizer::DisintegrateMERGE_VALUES(llvm::SDNode*, unsigned int)
(/android1/llvm/build/bin/clang-7+0x2aa56b2)
#5 0x000055d0ef608f58
llvm::DAGTypeLegalizer::ExpandRes_MERGE_VALUES(llvm::SDNode*, unsigned int,
llvm::SDValue&, llvm::SDValue&) (/android1/llvm/build/bin/clang-7+0x2b1bf58)
#6 0x00007ffda33f3006
clang-7: error: unable to execute command: Segmentation fault
Reported: <a href="https://github.com/ClangBuiltLinux/linux/issues/22">https://github.com/ClangBuiltLinux/linux/issues/22</a></pre>
</div>
</p>
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