https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69842
Bug ID: 69842
Summary: Parameter deduction in polymorphic lambdas
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: carlphilippreh at gmail dot com
Target Milestone: ---
The following code fails to compile with gcc-6-20160214. It used to work with
gcc-5.3 and clang also accepts it. Compile with -std=c++14.
#include <type_traits>
int main()
{
auto const g([](auto && _var) {
static_assert(std::is_same<int &&,decltype(_var)>::value,"");
});
g(0);
}
I don't have the C++14 standard handy, so I am not sure if this is correct
behavior or not. In any case, this breaks code that perfectly forwards using a
lambda.
