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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang is very slow when computing certain diagnostics"
href="http://llvm.org/bugs/show_bug.cgi?id=17698">17698</a>
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<th>Summary</th>
<td>Clang is very slow when computing certain diagnostics
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>ofv@wanadoo.es
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>This test case:
#include "boost/asio.hpp"
double mainf();
int mainf() {
foo(sdafo_2, 0);
return 0;
}
takes this time to compile:
Time (seconds) Command
6.8 clang -c -std=c++11 test.cpp
4.8 clang -c test.cpp
(after replacing `sdafo_2' with `x')
1.0 clang -c test.cpp
(after replacing `sdafo_2' with `o_2')
2.8 clang -c test.cpp
Note how Clang needs a long time to compute the diagnostic about `sdafo_2'
after reporting the diagnostic about the illegal overload of `mainf'.</pre>
</div>
</p>
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