https://bugs.llvm.org/show_bug.cgi?id=49387
Bug ID: 49387
Summary: Pack expansion failure with template lambda and
std::index_sequence
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++2a
Assignee: unassignedclangb...@nondot.org
Reporter: vittorio.ro...@outlook.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
#include <utility>
struct S
{
template <int> using N = int;
static constexpr int size = 5;
};
static void f()
{
const auto l = [&]<typename>() {};
[&]<std::size_t... Is>(std::index_sequence<Is...>)
{
((l
.template operator()<typename S::template N<Is>>()),
...);
}
(std::make_index_sequence<S::size> {});
}
The code above results in an incorrect compilation failure with the following
message:
<source>:17:13: error: pack expansion does not contain any unexpanded parameter
packs
...);
^
1 error generated.
Compiler returned: 1
The code should instead compile. Live on Compiler Explorer:
https://gcc.godbolt.org/z/rMvY3o
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
