<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 --- - multiple unsequenced modifications and initializer list"
href="http://llvm.org/bugs/show_bug.cgi?id=17893">17893</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>multiple unsequenced modifications and initializer list
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.3
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</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>mail.pourri@laposte.net
</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>The following code:
int count = 23;
int foo[] = { count++, count++, count++ };
Generates a: "warning: multiple unsequenced modifications to 'count'
[-Wunsequenced]"
This is incorrect, as I interpret the C++03 standard, as each initializer
expression in the above is a full-expression (1.9 [intro.execution]/12-13) and
therefore there is a sequence point after each expression (1.9
[intro.execution]/16).
It seems that the standard does not seem to dictate the order in which the
expressions are evaluated, which, as far as I know seems to be left to right in
all compilers I've tested.
BTW, in C++11, this is an allowed statement, and Clang actually silent the
warning by itself.</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>