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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - failed stream extraction consumes characters after clear (libstdc++ vs libc++)"
href="http://llvm.org/bugs/show_bug.cgi?id=19354">19354</a>
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<th>Summary</th>
<td>failed stream extraction consumes characters after clear (libstdc++ vs libc++)
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>gellule.xg@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Thought I would report the following difference between libstdc++ and libc++.
For the code below, libc++ reports a position (ss.tellg()) of 3, whereas
libstdc++ reports 0.
#include <iostream>
#include <sstream>
int main()
{
std::stringstream ss;
double f;
ss << "abc";
ss >> f;
if(ss.fail()) {
std::cout << "Failed!" << std::endl;
ss.clear();
}
std::cout << "Position: " << ss.tellg() << std::endl;
}</pre>
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