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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - istream fails to parse a number followed by "x""
href="http://llvm.org/bugs/show_bug.cgi?id=22372">22372</a>
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</tr>
<tr>
<th>Summary</th>
<td>istream fails to parse a number followed by "x"
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<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>alessandro@pintle.it
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I apologize if this was already reported or fixed; I couldn't find any matching
bug report. I also apologize if this is not a bug and it's expected/undefined
behavior.
This can be reproduced using the libc++ version that is carried with MacOS X
Yosemite.
#include <stdio.h>
#include <limits>
#include <iostream>
#include <sstream>
int main( ) {
double x = 0;
double y = 0;
std::string point_str("4x5");
std::istringstream iss(point_str);
// Prints "0,0" on Yosemite, "4,5" on other platforms
iss >> x;
iss.ignore(std::numeric_limits<std::streamsize>::max(), 'x');
iss >> y;
std::cout << x << "," << y << std::endl;
}</pre>
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