https://bugs.llvm.org/show_bug.cgi?id=42835
Bug ID: 42835
Summary: typename in trailing return type prevents break before
arrow
Product: clang
Version: 7.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Formatter
Assignee: unassignedclangb...@nondot.org
Reporter: mate...@loskot.net
CC: djas...@google.com, kli...@google.com,
llvm-bugs@lists.llvm.org
Submitting bug report about this issue which I discussed on the list a while
ago: http://lists.llvm.org/pipermail/cfe-users/2018-November/001421.html
I've upgraded from clang-format 6 to 7.
If the arrow `->` is followed by typename keyword, it prevents breaking line
Before the arrow:
- code before:
template <int K, typename E, typename L, int N>
auto bbbbbbbbbbbbbbbbbbbbbbb(detail::base<E, L, N>& p) -> typename
std::add_lvalue_reference<E>::type;
- code after:
template <int K, typename E, typename L, int N>
auto bbbbbbbbbbbbbbbbbbbbbbb(detail::base<E, L, N> &p) ->
typename std::add_lvalue_reference<E>::type;
Whereas, if typename is removed:
- code before
template <int K, typename E, typename L, int N>
auto ccccccccccccccccccccccc(detail::base<E, L, N>& p) ->
std::add_lvalue_reference<E>::type;
- code after:
template <int K, typename E, typename L, int N>
auto ccccccccccccccccccccccc(detail::base<E, L, N> &p)
-> std::add_lvalue_reference<E>::type;
Presumably, it may be related to bug 42150
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