Add __builtion_unreachable to vector::size(), vector::capacity()

[official-gcc.git] / gcc / testsuite / g++.dg / cpp1y / auto-fn53.C

// PR c++/86942
// { dg-do compile { target c++14 } }

using T = decltype(auto) () -> int; // { dg-error "11:invalid use of" }