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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion failed in TypeSystemSwiftTypeRef.cpp when running 'thread list' crashing lldb on Linux"
href="https://bugs.llvm.org/show_bug.cgi?id=49452">49452</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failed in TypeSystemSwiftTypeRef.cpp when running 'thread list' crashing lldb on Linux
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
<tr>
<th>Version</th>
<td>10.0
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@lists.llvm.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>joj@mac.com
</td>
</tr>
<tr>
<th>CC</th>
<td>jdevlieghere@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I tried to reproduce this but was unable manually, but ": lldb -replay
/tmp/reproducer-e6ba30" did reproduce it and it crashed again.
I've put up the reproducer as a tar.gz at:
<a href="https://www.icloud.com/iclouddrive/0g3sE3slMVet4lypF7-xHbuGg#reproducer-e6ba30">https://www.icloud.com/iclouddrive/0g3sE3slMVet4lypF7-xHbuGg#reproducer-e6ba30</a>
it is 37.5MB and can't be attached.
This is with:
(lldb) version
lldb version 10.0.0
Swift version 5.4-dev (LLVM d28e4b973b2abd9, Swift d378e707988c0ef)
Trying to run 'thread list' gave me the following broken assertion:
-----
(lldb) frame info
frame #0: 0x00005555556a505e NIOPerformanceTester`UInt32.init(value=(b12 = 0,
b3 = 0)) at IntegerTypes.swift:52:38
(lldb) fr v
(NIO._UInt24) value = (b12 = 0, b3 = 0)
(UInt32) self = 0
(UInt32) newValue = 0
(lldb) fr v -a
(UInt32) self = 0
(UInt32) newValue = 0
(lldb) thread list
1 != 0
failing type was $sSuxs5Error_pIgyrzo_D
lldb:
/home/build-user/llvm-project/lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwiftTypeRef.cpp:1874:
virtual bool
lldb_private::TypeSystemSwiftTypeRef::IsPossibleDynamicType(lldb::opaque_compiler_type_t,
lldb_private::CompilerType *, bool, bool): Assertion `equivalent &&
"TypeSystemSwiftTypeRef diverges from SwiftASTContext"' failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace.
Stack dump:
0. Program arguments: lldb
.build/x86_64-unknown-linux-gnu/debug/NIOPerformanceTester
lldb[0x421024]
lldb[0x41f0ce]
lldb[0x4214b5]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x153c0)[0x7f1d83afd3c0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f1d79f3f18b]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7f1d79f1e859]
/lib/x86_64-linux-gnu/libc.so.6(+0x25729)[0x7f1d79f1e729]
/lib/x86_64-linux-gnu/libc.so.6(+0x36f36)[0x7f1d79f2ff36]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x140f365)[0x7f1d7b888365]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x10aa14f)[0x7f1d7b52314f]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xfeee53)[0x7f1d7b467e53]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xedced2)[0x7f1d7b355ed2]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xedcf65)[0x7f1d7b355f65]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xee0420)[0x7f1d7b359420]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x122e0d2)[0x7f1d7b6a70d2]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xe9ae7c)[0x7f1d7b313e7c]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xe9a6aa)[0x7f1d7b3136aa]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xe9a6aa)[0x7f1d7b3136aa]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xe9a2d1)[0x7f1d7b3132d1]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x104ffdf)[0x7f1d7b4c8fdf]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x10508b5)[0x7f1d7b4c98b5]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xfec45e)[0x7f1d7b46545e]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0x15b720d)[0x7f1d7ba3020d]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xf61457)[0x7f1d7b3da457]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xf5748c)[0x7f1d7b3d048c]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xf5adcc)[0x7f1d7b3d3dcc]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xea2456)[0x7f1d7b31b456]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xe86834)[0x7f1d7b2ff834]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(+0xf5c50d)[0x7f1d7b3d550d]
/home/jocke/swift/swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-21-a-ubuntu20.04/usr/bin/../lib/liblldb.so.10(_ZN4lldb10SBDebugger21RunCommandInterpreterEbb+0xf7)[0x7f1d7afc2e47]
lldb[0x40a94f]
lldb[0x40c7af]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f1d79f200b3]
lldb[0x40716e]
********************
Crash reproducer for lldb version 10.0.0
Swift version 5.4-dev (LLVM d28e4b973b2abd9, Swift d378e707988c0ef)
Reproducer written to '/tmp/reproducer-e6ba30'
Before attaching the reproducer to a bug report:
- Look at the directory to ensure you're willing to share its content.
- Make sure the reproducer works by replaying the reproducer.
Replay the reproducer with the following command:
lldb -replay /tmp/reproducer-e6ba30
********************
fish: Job 1, 'lldb .build/x86_64-unknown-linu?' terminated by signal SIGABRT
(Abort)
jocke@swiftdev ~/s/swift-nio (jh-liburing-fullmerge) [SIGABRT]>
jocke@swiftdev ~/s/swift-nio (jh-liburing-fullmerge) [SIGABRT]> swift --version
Swift version 5.4-dev (LLVM d28e4b973b2abd9, Swift d378e707988c0ef)
Target: x86_64-unknown-linux-gnu
jocke@swiftdev ~/s/swift-nio (jh-liburing-fullmerge)> uname -a
Linux swiftdev 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC
2021 x86_64 x86_64 x86_64 GNU/Linux
-----</pre>
</div>
</p>
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