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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang format misinterprets less-than-operator inside template declaration with enable_if"
href="https://bugs.llvm.org/show_bug.cgi?id=32208">32208</a>
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<th>Summary</th>
<td>clang format misinterprets less-than-operator inside template declaration with enable_if
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>4.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Formatter
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>per.ola.nilsson@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>djasper@google.com, klimek@google.com, llvm-bugs@lists.llvm.org
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<pre>clang-format seems to misinterpret less-than operator inside enable_if. First
manually formatted code, where enable_if aligns between the two functions:
$ cat for_each_tuple_indexed.h
#pragma once
#include <tuple>
#include <utility>
template <std::size_t I = 0, typename FuncT, typename... Tp>
inline typename std::enable_if<I == sizeof...(Tp), void>::type
for_each_indexed(
const std::tuple<Tp...> &,
FuncT &&) { // recursion terminal case, I is equal to length of tuple
}
template <std::size_t I = 0, typename FuncT, typename... Tp>
inline typename std::enable_if<I < sizeof...(Tp), void>::type for_each_indexed(
const std::tuple<Tp...> &t,
FuncT &&f) {
std::forward<FuncT>(f)(std::get<I>(t), I);
for_each_indexed<I + 1, FuncT, Tp...>(t, std::forward<FuncT>(f));
}
======
$ clang-format-4.0 -style=llvm for_each_tuple_indexed.h
#pragma once
#include <tuple>
#include <utility>
template <std::size_t I = 0, typename FuncT, typename... Tp>
inline typename std::enable_if<I == sizeof...(Tp), void>::type
for_each_tuple_indexed(
const std::tuple<Tp...> &,
FuncT &&) { // recursion terminal case, I is equal to length of tuple
}
template <std::size_t I = 0, typename FuncT, typename... Tp>
inline typename std::enable_if <
I<sizeof...(Tp), void>::type
for_each_tuple_indexed(const std::tuple<Tp...> &t, FuncT &&f) {
std::forward<FuncT>(f)(std::get<I>(t), I);
for_each_indexed<I + 1, FuncT, Tp...>(t, std::forward<FuncT>(f));
}</pre>
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