<html>
<head>
<base href="https://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 --- - clang-cl "PHI node entries do not match predecessors!" "Instruction does not dominate all uses!""
href="https://llvm.org/bugs/show_bug.cgi?id=25606">25606</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang-cl "PHI node entries do not match predecessors!" "Instruction does not dominate all uses!"
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>stephan.bergmann.secondary@googlemail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>With recent Clang trunk:
<span class="quote">> $ cat test.cc
> struct S0 { ~S0(); };
> struct S1 { virtual ~S1(); };
> struct S2: virtual S1 { void f(); };
> struct S3: S2 {};
> void S2::f() {
> S0 s;
> (void) dynamic_cast<S3 *>(this);
> }</span >
<span class="quote">> $ clang -cc1 -triple i386-pc-windows-msvc -emit-obj -fexceptions test.cc
> PHI node entries do not match predecessors!
> %8 = phi %struct.S3* [ %7, %dynamic_cast.notnull ], [ null, %dynamic_cast.null ]
> label %dynamic_cast.notnull
> label %invoke.cont
> Instruction does not dominate all uses!
> %7 = bitcast i8* %6 to %struct.S3*
> %8 = phi %struct.S3* [ %7, %dynamic_cast.notnull ], [ null, %dynamic_cast.null ]
> fatal error: error in backend: Broken function found, compilation aborted!</span ></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>