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<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 --- - crash when emitting code for constant initializer"
href="http://llvm.org/bugs/show_bug.cgi?id=18375">18375</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>crash when emitting code for constant initializer
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>MC
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.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>consider:
$ cat b.ll
target datalayout = "e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386-unknown-linux-gnu"
%struct.R = type { i32 }
@__executable_start = external global i8
@x = global i32 sub (i32 ptrtoint (i32* @x to i32), i32 ptrtoint (i8*
@__executable_start to i32)), align 4
compile with:
$ ~/llvm/build/bin/llc b.ll -o b.o -filetype=obj
llc: ~/llvm/src/lib/MC/MCAssembler.cpp:147: uint64_t
llvm::MCAsmLayout::getSymbolOffset(const llvm::MCSymbolData*) const: Assertion
`SD->getFragment() && "Invalid getOffset() on undefined symbol!"' failed.
0 llc 0x000000000184f4ef llvm::sys::PrintStackTrace(_IO_FILE*) +
38
1 llc 0x000000000184f776
2 llc 0x000000000184f1ba
3 libpthread.so.0 0x00007f1432b9fcb0
4 libc.so.6 0x00007f1431ff4425 gsignal + 53
5 libc.so.6 0x00007f1431ff7b8b abort + 379
6 libc.so.6 0x00007f1431fed0ee
7 libc.so.6 0x00007f1431fed192
8 llc 0x000000000175c231
llvm::MCAsmLayout::getSymbolOffset(llvm::MCSymbolData const*) const + 1027
9 llc 0x000000000174570a
10 llc 0x000000000175e7df
llvm::MCAssembler::handleFixup(llvm::MCAsmLayout const&, llvm::MCFragment&,
llvm::MCFixup const&) + 143
11 llc 0x000000000175ec9c llvm::MCAssembler::Finish() + 1206
12 llc 0x000000000178c049 llvm::MCObjectStreamer::FinishImpl() +
123
13 llc 0x000000000177bc5d llvm::MCELFStreamer::FinishImpl() + 71
14 llc 0x0000000001791aaa llvm::MCStreamer::Finish() + 118
15 llc 0x0000000000f17def
llvm::AsmPrinter::doFinalization(llvm::Module&) + 3175
16 llc 0x0000000001705182
llvm::FPPassManager::doFinalization(llvm::Module&) + 88
17 llc 0x0000000001705596
18 llc 0x00000000017059fc
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 254
19 llc 0x0000000001705c0f
llvm::legacy::PassManager::run(llvm::Module&) + 39
20 llc 0x0000000000892640
21 llc 0x000000000089165a main + 237
22 libc.so.6 0x00007f1431fdf76d __libc_start_main + 237
23 llc 0x0000000000890fa9</pre>
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