<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 --- - ret %eax "using an undefined physical register""
href="http://llvm.org/bugs/show_bug.cgi?id=16954">16954</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ret %eax "using an undefined physical register"
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rzg@apple.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=11077" name="attach_11077" title="Reduced test case.">attachment 11077</a> <a href="attachment.cgi?id=11077&action=edit" title="Reduced test case.">[details]</a></span>
Reduced test case.
On r188867, using the attached reduced test case, Clang dies with the following
error:
*** Bad machine code: Using an undefined physical register ***
- function: _Z18read_response_sizev
- basic block: BB#7 if.end (0x7fb7388f0010)
- instruction: RET %EAX; dbg:<unknown>:33
- operand 0: %EAX
The command used to compile is
clang -cc1 -emit-obj -gdwarf-2 -O1 -fsanitize=address,init-order
-stack-protector 1 -x c++ main.cpp
The operating system is OS X, x86_64.</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>