https://bugs.llvm.org/show_bug.cgi?id=32208
Bug ID: 32208
Summary: clang format misinterprets less-than-operator inside
template declaration with enable_if
Product: clang
Version: 4.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Formatter
Assignee: unassignedclangb...@nondot.org
Reporter: per.ola.nils...@gmail.com
CC: djas...@google.com, kli...@google.com,
llvm-bugs@lists.llvm.org
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));
}
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