"Changes of default constructor" build failure(s) — clang 3.8.1

This code is a defect of the C++ standard:
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#1344
class foo {
    int a;
    foo(int);
};

foo::foo(int c = 5) : a(c) {

}

PackageVersionSupposed error messageFull log Bug report
gem 1:0.93.3-10gemlist_info.cpp:37:42: error: addition of default argument on redeclaration makes this constructor a default constructor Log
kbibtex 0.4-4websearchabstract.cpp:69:63: error: addition of default argument on redeclaration makes this constructor a default constructor Log 753270
linpsk 1.2.5~rc1-1src/csound.cpp:72:22: error: addition of default argument on redeclaration makes this constructor a default constructor Log 753272
wicd-kde 0.3.1-1networkplotter.cpp:28:47: error: addition of default argument on redeclaration makes this constructor a default constructor Log 753339

4 errors