https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67881
Bug ID: 67881
Summary: type deduced incorrectly in constructor template when
binding to const int
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: akrzemi1 at gmail dot com
Target Milestone: ---
My class has a perfect-forwarding non-explicit constructor. I expect that when
it binds to a constant lvalue of type int, it recognizes the type as lvalue
reference. My expectation is illustrated with the static_assert in the code:
```
#include <type_traits>
struct any_
{
template <class R> any_(R&&) {
static_assert(std::is_lvalue_reference<R>::value, "expected lvalue
ref");
}
};
int main()
{
const int i = 7;
any_ oi = i;
}
```
This assertion fails in gcc 5.1 and 5.2 (but passes in 4.8 and 4.9).
