<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 --- - clang says a used variable is unused"
href="http://llvm.org/bugs/show_bug.cgi?id=17897">17897</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang says a used variable is unused
</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>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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rafael.espindola@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Clang says flow is not used, but commenting it changes the value of foobarzed.
namespace {
struct foo {};
}
template <typename T, T> struct SameType;
template <class T> struct has_FlowTraits2 {
struct Fallback {
bool flow;
};
struct Derived : T, Fallback {};
template <typename C>
static char (&f(SameType<bool Fallback::*, &C::flow> *))[1];
template <typename C> static char (&f(...))[2];
static bool const value = sizeof(f<Derived>(0)) == 2;
};
template <typename T> struct SequenceTraits2 {};
template <> struct SequenceTraits2<foo> {
static const bool flow = true; // HERE
};
bool foobarzed = has_FlowTraits2<SequenceTraits2<foo> >::value;</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>