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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang spends too much time in clang::Sema::ArgumentDependentLookup after r186040"
href="http://llvm.org/bugs/show_bug.cgi?id=16597">16597</a>
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<th>Summary</th>
<td>Clang spends too much time in clang::Sema::ArgumentDependentLookup after r186040
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>glider@google.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, richard-llvm@metafoo.co.uk
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>It takes infinite time for Clang r186040 to compiler the attached file with the
following flags:
$ clang ImageDocument.ii -c -w -std=gnu++11
r186039 works just fine.
According to perf, most of the time is spent in
clang::Sema::ArgumentDependentLookup():
83.18% clang-3.3 clang-3.3 [.]
clang::Sema::ArgumentDependentLookup(clang::DeclarationName, bool,
clang::SourceLocation, llvm::ArrayRef<clang::Expr*>, clang::ADLResult&)
15.83% clang-3.3 clang-3.3 [.]
clang::FunctionDecl::getPreviousDeclImpl()</pre>
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