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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang's assembler crashes when given invalid assembly"
href="https://bugs.llvm.org/show_bug.cgi?id=39269">39269</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang's assembler crashes when given invalid assembly
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>MacOS X
</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>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mike.benfield@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I'm not bothering to attach the files since I think anyone can easily reproduce
this, but if I should let me know.
$ cat trash.s
.intel_syntax noprefix
.text
.globl nonsense
nonsense:
vmovaps ymm2, [rdi +
$ clang trash.s
Stack dump:
0. Program arguments: /opt/local/libexec/llvm-7.0/bin/clang -cc1as -triple
x86_64-apple-macosx10.12.0 -filetype obj -main-file-name trash.s -target-cpu
penryn -fdebug-compilation-dir /Users/mike -dwarf-debug-producer clang version
7.0.0 (tags/RELEASE_700/rc2) -dwarf-version=4 -mrelocation-model pic -o
/var/folders/y3/b1583v4s5lsg2m3xl74dv9r80000gn/T/trash-17a9fa.o
/var/folders/y3/b1583v4s5lsg2m3xl74dv9r80000gn/T/trash-53a96b.s
0 libLLVM.dylib 0x00000001074e177b
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1 libLLVM.dylib 0x00000001074e10a5 llvm::sys::RunSignalHandlers() +
52
2 libLLVM.dylib 0x00000001074e1b32 SignalHandler(int) + 144
3 libsystem_platform.dylib 0x00007fffad2a1b3a _sigtramp + 26
4 libLLVM.dylib 0x00000001074516b0
5 libLLVM.dylib 0x00000001074a75cd
llvm::SmallVectorBase::grow_pod(void*, unsigned long, unsigned long) + 189
6 libLLVM.dylib 0x00000001088aa807
llvm::SmallVectorTemplateBase<std::__1::pair<(anonymous
namespace)::X86AsmParser::InfixCalculatorTok, long long>,
true>::push_back(std::__1::pair<(anonymous
namespace)::X86AsmParser::InfixCalculatorTok, long long> const&) + 73
7 libLLVM.dylib 0x00000001088a9c5c (anonymous
namespace)::X86AsmParser::IntelExprStateMachine::getImm() + 424
8 libLLVM.dylib 0x00000001088a8242 (anonymous
namespace)::X86AsmParser::ParseOperand() + 7330
9 libLLVM.dylib 0x00000001088a1a03 (anonymous
namespace)::X86AsmParser::ParseInstruction(llvm::ParseInstructionInfo&,
llvm::StringRef, llvm::SMLoc,
llvm::SmallVectorImpl<std::__1::unique_ptr<llvm::MCParsedAsmOperand,
std::__1::default_delete<llvm::MCParsedAsmOperand> > >&) + 4863
10 libLLVM.dylib 0x0000000107e6f981 (anonymous
namespace)::AsmParser::parseStatement((anonymous
namespace)::ParseStatementInfo&, llvm::MCAsmParserSemaCallback*) + 4443
11 libLLVM.dylib 0x0000000107e6b866 (anonymous
namespace)::AsmParser::Run(bool, bool) + 360
12 clang 0x0000000105d82e0c cc1as_main(llvm::ArrayRef<char
const*>, char const*, void*) + 9876
13 clang 0x0000000105d7e917 main + 8020
14 libdyld.dylib 0x00007fffad092235 start + 1
15 libdyld.dylib 0x0000000000000014 start + 1391910368
clang: error: unable to execute command: Segmentation fault: 11
clang: error: clang integrated assembler command failed due to signal (use -v
to see invocation)
clang version 7.0.0 (tags/RELEASE_700/rc2)
Target: x86_64-apple-darwin16.5.0
Thread model: posix
InstalledDir: /opt/local/libexec/llvm-7.0/bin
clang: 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: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg:
/var/folders/y3/b1583v4s5lsg2m3xl74dv9r80000gn/T/trash-7ac3c1.S
clang: note: diagnostic msg:
/var/folders/y3/b1583v4s5lsg2m3xl74dv9r80000gn/T/trash-7ac3c1.sh
clang: note: diagnostic msg: Crash backtrace is located in
clang: note: diagnostic msg:
/Users/mike/Library/Logs/DiagnosticReports/clang_<YYYY-MM-DD-HHMMSS>_<hostname>.crash
clang: note: diagnostic msg: (choose the .crash file that corresponds to your
crash)
clang: note: diagnostic msg:
********************</pre>
</div>
</p>
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