<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Build failure with gcc LTO"
href="http://llvm.org/bugs/show_bug.cgi?id=18301">18301</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Build failure with gcc LTO
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</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>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>octoploid@yandex.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>When I try to build LLVM with gcc -flto I get:
lib/libLLVMAsmParser.so: error: undefined reference to
'llvm::SymbolTableListTraits<llvm::BasicBlock,
llvm::Function>::transferNodesFromList(llvm::ilist_traits<llvm::BasicBlo
ck>&, llvm::ilist_iterator<llvm::BasicBlock>,
llvm::ilist_iterator<llvm::BasicBlock>)'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed
This happens because the symbol is undefined in LLParser.cpp.o:
% nm lib/AsmParser/CMakeFiles/LLVMAsmParser.dir/LLParser.cpp.o | grep
_ZN4llvm21SymbolTableListTraitsINS_10BasicBlockENS_8FunctionEE21transferNodesFromListERNS_12ilist_traitsIS1_EENS_14ilist_iteratorIS1_EES8_
U
_ZN4llvm21SymbolTableListTraitsINS_10BasicBlockENS_8FunctionEE21transferNodesFromListERNS_12ilist_traitsIS1_EENS_14ilist_iteratorIS1_EES8_
And with -flto the weak symbol in lib/libLLVMCore.so is optimized out.
(Without lto one has:
lib/libLLVMCore.so:
0000000000071e90 W
_ZN4llvm21SymbolTableListTraitsINS_10BasicBlockENS_8FunctionEE21transferNodesFromListERNS_12ilist_traitsIS1_EENS_14ilist_iteratorIS1_EES8
and everything works fine)
I think an explicit instantiation of the SymbolTableListTraits template
is missing in LLParser.cpp.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>