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<head>
<base href="http://llvm.org/bugs/" />
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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 --- - Assertion failed, "Cannot define a symbol twice!""
href="http://llvm.org/bugs/show_bug.cgi?id=19185">19185</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failed, "Cannot define a symbol twice!"
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>3.4
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</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>llvm-as
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>irony42@me.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12253" name="attach_12253" title="Crashing file">attachment 12253</a> <a href="attachment.cgi?id=12253&action=edit" title="Crashing file">[details]</a></span>
Crashing file
I can reproducible crash on a particular source file.
I'm on OSX 10.9.2 using MacPorts clang-3.4, using gcc 4.9's -Wa,-q option to
assemble with clang.
Here's the case:
/opt/local/libexec/llvm-3.4/bin/clang -cc1as -triple -filetype obj <
ccSJANa6-a10d5b.S #attached
The backtrace I get:
Assertion failed: (Symbol->isUndefined() && "Cannot define a symbol twice!"),
function EmitLabel, file MCMachOStreamer.cpp, line 121.
0 libLLVM-3.4.dylib 0x0000000110863388
llvm::sys::PrintStackTrace(__sFILE*) + 40
1 libLLVM-3.4.dylib 0x0000000110863884 SignalHandler(int) + 548
2 libsystem_platform.dylib 0x00007fff90cbb5aa _sigtramp + 26
3 libsystem_platform.dylib 000000000000000000 _sigtramp + 1865697904
4 libLLVM-3.4.dylib 0x0000000110863646 abort + 22
5 libLLVM-3.4.dylib 0x0000000110863621 __assert_rtn + 81
6 libLLVM-3.4.dylib 0x000000011037d8c6 (anonymous
namespace)::MCMachOStreamer::EmitLabel(llvm::MCSymbol*) + 422
7 libLLVM-3.4.dylib 0x00000001103716d8
llvm::MCDwarfFrameEmitter::Emit(llvm::MCStreamer&, llvm::MCAsmBackend*, bool,
bool) + 1960
8 libLLVM-3.4.dylib 0x0000000110394473
llvm::MCStreamer::EmitFrames(llvm::MCAsmBackend*, bool) + 67
9 libLLVM-3.4.dylib 0x000000011037e45d (anonymous
namespace)::MCMachOStreamer::FinishImpl() + 45
10 libLLVM-3.4.dylib 0x00000001103ad5a1 (anonymous
namespace)::AsmParser::Run(bool, bool) + 1505
11 clang 0x000000010e66a00d cc1as_main(char const**, char
const**, char const*, void*) + 8781
12 clang 0x000000010e66af61 main + 1089
13 libdyld.dylib 0x00007fff96ed85fd start + 1
14 libdyld.dylib 0x0000000000000006 start + 1762818570
Stack dump:
0. Program arguments: /opt/local/libexec/llvm-3.4/bin/clang -cc1as -triple
x86_64-apple-macosx10.9.0 -filetype obj
1. Program arguments: -triple x86_64-apple-macosx10.9.0 -filetype obj
0 libLLVM-3.4.dylib 0x0000000110863388
llvm::sys::PrintStackTrace(__sFILE*) + 40
1 libLLVM-3.4.dylib 0x0000000110863884 SignalHandler(int) + 548
2 libsystem_platform.dylib 0x00007fff90cbb5aa _sigtramp + 26
3 libsystem_platform.dylib 000000000000000000 _sigtramp + 1865697904
4 libLLVM-3.4.dylib 0x0000000110863646 abort + 22
5 libLLVM-3.4.dylib 0x0000000110863621 __assert_rtn + 81
6 libLLVM-3.4.dylib 0x000000011037d8c6 (anonymous
namespace)::MCMachOStreamer::EmitLabel(llvm::MCSymbol*) + 422
7 libLLVM-3.4.dylib 0x00000001103716d8
llvm::MCDwarfFrameEmitter::Emit(llvm::MCStreamer&, llvm::MCAsmBackend*, bool,
bool) + 1960
8 libLLVM-3.4.dylib 0x0000000110394473
llvm::MCStreamer::EmitFrames(llvm::MCAsmBackend*, bool) + 67
9 libLLVM-3.4.dylib 0x000000011037e45d (anonymous
namespace)::MCMachOStreamer::FinishImpl() + 45
10 libLLVM-3.4.dylib 0x00000001103ad5a1 (anonymous
namespace)::AsmParser::Run(bool, bool) + 1505
11 clang 0x000000010e66a00d cc1as_main(char const**, char
const**, char const*, void*) + 8781
12 clang 0x000000010e66af61 main + 1089
13 libdyld.dylib 0x00007fff96ed85fd start + 1
14 libdyld.dylib 0x0000000000000006 start + 1762818570
zsh: illegal hardware instruction "/opt/local/libexec/llvm-3.4/bin/clang"
-cc1as -triple -filetype obj <
***
Probably not too relevant, but here's the command that generated the above
case. I'd've included the C source files if they didn't seem to want 20MB of
headers in order to start compiling and exhibit the issue.
gcc-mp-4.9 -Wa,-q -m64 -c -o signal_x86_64.o signal_x86_64.c -I.
-I../../include -D__WINESRC__ -D_NTSYSTEM_ -D_REENTRANT -fPIC
-fno-strict-aliasing -Wdeclaration-after-statement -Wempty-body
-Wignored-qualifiers -Wstrict-prototypes -Wtype-limits
-Wunused-but-set-parameter -Wwrite-strings -Wpointer-arith -Wlogical-op
-I/Users/ryan/Documents/wineopt/local/include -g -O2</pre>
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