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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang incorrectly rejects member function because of template substitution failure (out-of-line definition)"
href="http://llvm.org/bugs/show_bug.cgi?id=15488">15488</a>
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<th>Summary</th>
<td>clang incorrectly rejects member function because of template substitution failure (out-of-line definition)
</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>
</tr>
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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>
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<th>Reporter</th>
<td>martin.kronbichler@it.uu.se
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=10167" name="attach_10167" title="Reduced testcase.">attachment 10167</a> <a href="attachment.cgi?id=10167&action=edit" title="Reduced testcase.">[details]</a></span>
Reduced testcase.
In the attached reduced testcase, clang incorrectly gives me the compile error:
bug_clang_template_deduction.cpp:46:18: error: out-of-line definition of 'bar'
does not match any
declaration in 'derived<a>'
void derived<a>::bar(Matrix<baseclass::n*baseclass::n>& F_x)
clang fails because of the combination of the following four aspects:
- the class "derived" and its base class "base" are templates
- the template parameter of the method is the result of a multiplication
- the factors are static const int's defined in the base class
- the operator * is overloaded for an unrelated data type (a simplified form of
std::complex) that can be implicitly constructed from int.
Removing any of these four aspects makes the code compile. The code is valid
afaict.
Tested on clang 3.2 and trunk:
clang version 3.3 (trunk 176804)
Target: x86_64-unknown-linux-gnu
Thread model: posix</pre>
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