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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - minmax should return the rightmost element when several elements are equivalent to the largest"
href="http://llvm.org/bugs/show_bug.cgi?id=22541">22541</a>
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<th>Summary</th>
<td>minmax should return the rightmost element when several elements are equivalent to the largest
</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>All
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>kariya_mitsuru@hotmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13839" name="attach_13839" title="clang++ -v">attachment 13839</a> <a href="attachment.cgi?id=13839&action=edit" title="clang++ -v">[details]</a></span>
clang++ -v
Please see the sample code below
=========================== sample code ===========================
#include <iostream>
#include <algorithm>
int main()
{
auto p = std::minmax({ 1, 2, 3 }, [](int, int) { return false; });
std::cout << "min = " << p.first << ", max = " << p.second << std::endl;
}
=========================== sample code ===========================
=========================== output ===========================
min = 1, max = 1
=========================== output ===========================
cf. <a href="http://melpon.org/wandbox/permlink/BSk4xURxuhIIOvlt">http://melpon.org/wandbox/permlink/BSk4xURxuhIIOvlt</a>
The C++11 standard 25.4.7[alg.min.max]/p.19 says, "y is a copy of the rightmost
argument when several arguments are equivalent to the largest."
Since minmax_element returns the rightmost iterator intentionally, I think it
is intentional rather than typo.
All integers are equivalent in the sample code above, so all element is the
smallest and the largest.
So the output should be
=========================== output ===========================
min = 1, max = 3
=========================== output ===========================</pre>
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