<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 --- - basic_regex::assign breaks *this if it throws regex_error"
href="http://llvm.org/bugs/show_bug.cgi?id=22213">22213</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>basic_regex::assign breaks *this if it throws regex_error
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kariya_mitsuru@hotmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13681" name="attach_13681" title="clang++ -v">attachment 13681</a> <a href="attachment.cgi?id=13681&action=edit" title="clang++ -v">[details]</a></span>
clang++ -v
The sample code below should output "true\ntrue\n" but it outputs
"true\nfalse\n" if it is compiled by clang 3.6.0.
=============================== sample code ===============================
#include <iostream>
#include <string>
#include <regex>
int main()
{
static const char s[] = "abc";
std::regex re("abc");
try {
re.assign(std::string("(def"), std::regex_constants::ECMAScript);
} catch (const std::regex_error& e) {
std::cout << std::boolalpha <<
(e.code() == std::regex_constants::error_paren) << std::endl;
}
std::cout << std::boolalpha << std::regex_search(s, re) << std::endl;
}
===========================================================================
================================= output ==================================
true
false
===========================================================================
cf. <a href="http://melpon.org/wandbox/permlink/r2GhrrkaKfGZGnd8">http://melpon.org/wandbox/permlink/r2GhrrkaKfGZGnd8</a>
The C++11 standard 28.8.3[re.regex.assign]/p.15 says, "If an exception is
thrown, *this is unchanged."
So I think that the output should be
================================= output ==================================
true
true
===========================================================================</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>