<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 --- - [-cxx-abi microsoft] static local initialization requires a guard variable"
href="http://llvm.org/bugs/show_bug.cgi?id=16888">16888</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[-cxx-abi microsoft] static local initialization requires a guard variable
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Blocks</th>
<td>12477
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Basically, MicrosoftCXXABI::EmitGuardedInit() needs work. It has this comment:
// FIXME: this code was only tested for global initialization.
// Not sure whether we want thread-safe static local variables as VS
// doesn't make them thread-safe.
Given that we can have inline functions with static locals, I believe we
actually need to match MSVC's behavior exactly down to the mangling of the
guard variable in order to be compatible.
I discovered this because LLVM's outs() has a static raw_fd_ostream for
STDOUT_FILENO, and currently we register its destructor once per call to
outs(), leading to assertions in the CRT on double-close.</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>