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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - detect some invalid odr-uses during template definition"
href="http://llvm.org/bugs/show_bug.cgi?id=16078">16078</a>
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<th>Summary</th>
<td>detect some invalid odr-uses during template definition
</td>
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<th>Product</th>
<td>clang
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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
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
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<pre>Clang accepts this:
template<typename T> void f() {
int n;
struct X { int get() { return n; } };
}
This is ill-formed (NDR) because the mention of 'n' inside X is always an
odr-use, and thus is always invalid. We need to be careful in cases which might
not be odr-uses; for instance, this is valid:
template<typename T> int f() {
T n = 0;
struct X { int get() { return n; } } x;
return x.get();
}
int k = f<const int>();</pre>
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