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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 --- - -Wmissing-braces warning when initializing an array using a parameter pack"
href="http://llvm.org/bugs/show_bug.cgi?id=18117">18117</a>
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<th>Summary</th>
<td>-Wmissing-braces warning when initializing an array using a parameter pack
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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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>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>andersca@icloud.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>#include <array>
#include <tuple>
template<typename> struct Sizes;
template<typename ...Ts> struct Sizes<std::tuple<Ts...>> {
static std::array<size_t, sizeof...(Ts)> sizes()
{
return { sizeof(Ts)... };
}
};
size_t f(size_t i) {
return Sizes<std::tuple<unsigned, bool>>::sizes()[i];
}
Anderss-MacBook-Pro:clang andersca$ clang -fsyntax-only -Wall t.cpp -std=c++11
t.cpp:9:18: warning: suggest braces around initialization of subobject
[-Wmissing-braces]
return { sizeof(Ts)... };
^~~~~~~~~~
{ }
t.cpp:14:47: note: in instantiation of member function
'Sizes<std::__1::tuple<unsigned int, bool> >::sizes' requested here
return Sizes<std::tuple<unsigned, bool>>::sizes()[i];
^
1 warning generated.</pre>
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