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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 --- - Missing symbol at link time for constexpr class const static member if they are arrays."
href="http://llvm.org/bugs/show_bug.cgi?id=18696">18696</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Missing symbol at link time for constexpr class const static member if they are arrays.
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>galopin@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The following sample do not link, s_ is missing at link time.
=================================
#include <iostream>
struct Foo {
constexpr int operator()(int v) const { return v+s_[0]; }
void notok( std::ostream & os ) const {
os << s_[0] << std::endl;
}
static constexpr int const s_[]{ 3 };
};
int main() {
constexpr Foo const bar{};
constexpr auto const ok = bar(10);
std::cout << ok << std::endl;
bar.notok( std::cout );
}
=================================
If s_ is not an array type, the sample link correctly
=================================
#include <iostream>
struct Foo {
constexpr int operator()(int a) const { return a+s_; }
void notok( std::ostream & os ) const {
os << s_ << std::endl;
}
static constexpr int const s_{ 3 };
};
int main() {
constexpr Foo const bar{};
constexpr auto const ok = bar(10);
std::cout << ok << std::endl;
bar.notok( std::cout );
}
=================================</pre>
</div>
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